{"id":2725,"date":"2025-09-15T03:43:17","date_gmt":"2025-09-15T03:43:17","guid":{"rendered":"https:\/\/nbaem.com\/?p=2725"},"modified":"2025-09-17T08:24:21","modified_gmt":"2025-09-17T08:24:21","slug":"magnetic-materials-for-sensor-applications","status":"publish","type":"post","link":"https:\/\/nbaem.com\/vi\/magnetic-materials-for-sensor-applications\/","title":{"rendered":"V\u1eadt li\u1ec7u t\u1eeb cho \u1ee9ng d\u1ee5ng c\u1ea3m bi\u1ebfn"},"content":{"rendered":"

T\u1ed5ng quan v\u1ec1 c\u00e1c v\u1eadt li\u1ec7u t\u1eeb th\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u1ea3m bi\u1ebfn<\/h2>\n

V\u1eadt li\u1ec7u t\u1eeb l\u00e0 tr\u00e1i tim c\u1ee7a nhi\u1ec1u c\u00f4ng ngh\u1ec7 c\u1ea3m bi\u1ebfn, m\u1ed7i lo\u1ea1i mang \u0111\u1eb7c t\u00ednh ri\u00eang ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea3m bi\u1ebfn c\u1ee5 th\u1ec3. Hi\u1ec3u r\u00f5 v\u1ec1 c\u00e1c v\u1eadt li\u1ec7u n\u00e0y gi\u00fap l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng \u00e1n t\u1ed1t nh\u1ea5t v\u1ec1 hi\u1ec7u su\u1ea5t, chi ph\u00ed v\u00e0 m\u00f4i tr\u01b0\u1eddng.<\/p>\n

Nam ch\u00e2m ferrite<\/h3>\n

Nam ch\u00e2m ferrite l\u00e0 h\u1ee3p ch\u1ea5t g\u1ed1m ch\u1ee7 y\u1ebfu l\u00e0m t\u1eeb oxit s\u1eaft k\u1ebft h\u1ee3p v\u1edbi bari ho\u1eb7c stronti. N\u1ed5i b\u1eadt v\u1edbi chi ph\u00ed th\u1ea5p v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, ferrite cung c\u1ea5p l\u1ef1c t\u1eeb trung b\u00ecnh v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t tuy\u1ec7t v\u1eddi. Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng, c\u1ea3m bi\u1ebfn c\u1ea3m \u1ee9ng v\u00e0 c\u1ea3m bi\u1ebfn v\u1ecb tr\u00ed, n\u01a1i m\u00e0 gi\u00e1 th\u00e0nh ph\u1ea3i ch\u0103ng v\u00e0 \u0111\u1ed9 b\u1ec1n l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng.<\/p>\n

Nam ch\u00e2m Neodymium NdFeB<\/h3>\n

Nam ch\u00e2m neodymium, d\u1ef1a tr\u00ean h\u1ee3p kim neodymium- s\u1eaft-boron, n\u1ed5i ti\u1ebfng v\u1edbi m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng c\u1ef1c cao. L\u1ef1c t\u1eeb m\u1ea1nh m\u1ebd n\u00e0y gi\u00fap c\u00e1c th\u00e0nh ph\u1ea7n c\u1ea3m bi\u1ebfn nh\u1ecf g\u1ecdn v\u00e0 nh\u1ea1y h\u01a1n. Tuy nhi\u00ean, nam ch\u00e2m NdFeB d\u1ec5 b\u1ecb \u0103n m\u00f2n v\u00e0 c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t th\u1ea5p h\u01a1n, th\u01b0\u1eddng c\u1ea7n l\u1edbp ph\u1ee7 ho\u1eb7c v\u1ecf b\u1ea3o v\u1ec7 \u0111\u1eb7c bi\u1ec7t trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p>\n

Nam ch\u00e2m Cobalt Samarium SmCo<\/h3>\n

Nam ch\u00e2m samarium cobalt cung c\u1ea5p s\u1ef1 c\u00e2n b\u1eb1ng xu\u1ea5t s\u1eafc gi\u1eefa l\u1ef1c t\u1eeb cao v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t v\u01b0\u1ee3t tr\u1ed9i, ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 tr\u00ean 250\u00b0C. Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a ch\u00fang l\u00e0m cho ch\u00fang l\u00fd t\u01b0\u1edfng cho c\u1ea3m bi\u1ebfn h\u00e0ng kh\u00f4ng, \u00f4 t\u00f4 v\u00e0 c\u00f4ng nghi\u1ec7p ho\u1ea1t \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 cao. M\u1eb7c d\u00f9 \u0111\u1eaft h\u01a1n NdFeB, nam ch\u00e2m SmCo c\u00f3 tu\u1ed5i th\u1ecd l\u00e2u h\u01a1n trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t.<\/p>\n

Nam Ch\u00e2m Alnico<\/h3>\n

Nam ch\u00e2m alnico, ch\u1ee7 y\u1ebfu g\u1ed3m nh\u00f4m, niken v\u00e0 cobalt, c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t cao v\u00e0 duy tr\u00ec t\u1eeb t\u00ednh \u1ed5n \u0111\u1ecbnh trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 r\u1ed9ng. Trong khi l\u1ef1c t\u1eeb c\u1ee7a ch\u00fang th\u1ea5p h\u01a1n c\u00e1c lo\u1ea1i \u0111\u1ea5t hi\u1ebfm, ch\u00fang v\u01b0\u1ee3t tr\u1ed9i trong c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u t\u1eeb t\u00ednh \u1ed5n \u0111\u1ecbnh m\u00e0 kh\u00f4ng suy gi\u1ea3m qua c\u00e1c dao \u0111\u1ed9ng nhi\u1ec7t, nh\u01b0 c\u1ea3m bi\u1ebfn t\u1ed1c \u0111\u1ed9 v\u00e0 v\u1ecb tr\u00ed nh\u1ea5t \u0111\u1ecbnh.<\/p>\n

V\u1eadt li\u1ec7u t\u1eeb phi\u1ebfn v\u00e0 tinh th\u1ec3 nano amorphous<\/h3>\n

C\u00e1c v\u1eadt li\u1ec7u t\u1eeb m\u1edbi n\u1ed5i nh\u01b0 h\u1ee3p kim v\u00f4 \u0111\u1ecbnh h\u00ecnh v\u00e0 nano-crystalline \u0111ang ng\u00e0y c\u00e0ng thu h\u00fat s\u1ef1 quan t\u00e2m nh\u1edd kh\u1ea3 n\u0103ng m\u1ec1m t\u1eeb v\u01b0\u1ee3t tr\u1ed9i, \u0111\u1ed9 c\u01b0\u1ee1ng t\u1eeb th\u1ea5p v\u00e0 \u0111\u1ed9 th\u1ea5m t\u1eeb cao. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y l\u00fd t\u01b0\u1edfng cho c\u1ea3m bi\u1ebfn ch\u00ednh x\u00e1c, n\u01a1i ti\u1ebfng \u1ed3n th\u1ea5p v\u00e0 ph\u1ea3n h\u1ed3i nhanh l\u00e0 c\u1ea7n thi\u1ebft. C\u1ea5u tr\u00fac vi m\u00f4 \u0111\u1ed9c \u0111\u00e1o c\u1ee7a ch\u00fang c\u0169ng cho ph\u00e9p th\u00edch nghi t\u1ed1t h\u01a1n cho c\u00e1c thi\u1ebft k\u1ebf c\u1ea3m bi\u1ebfn mini v\u00e0 linh ho\u1ea1t.<\/p>\n

M\u1ed7i lo\u1ea1i v\u1eadt li\u1ec7u t\u1eeb mang l\u1ea1i l\u1ee3i th\u1ebf ri\u00eang ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c lo\u1ea1i c\u1ea3m bi\u1ebfn kh\u00e1c nhau. Vi\u1ec7c ch\u1ecdn \u0111\u00fang lo\u1ea1i nam ch\u00e2m ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c c\u00e2n b\u1eb1ng c\u00e1c \u0111\u1eb7c t\u00ednh t\u1eeb, m\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng, gi\u1edbi h\u1ea1n k\u00edch th\u01b0\u1edbc v\u00e0 chi ph\u00ed. \u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1c \u0111\u1eb7c t\u00ednh t\u1eeb, NBAEM cung c\u1ea5p c\u00e1c ph\u00e2n t\u00edch s\u00e2u r\u1ed9ng v\u1ec1 \u0111\u1ecbnh h\u01b0\u1edbng t\u1eeb t\u00ednh<\/a> v\u00e0 c\u00e1c v\u1eadt li\u1ec7u nam ch\u00e2m c\u1ea3m bi\u1ebfn ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a b\u1ea1n.<\/p>\n

C\u00e1c \u0111\u1eb7c t\u00ednh t\u1eeb quan tr\u1ecdng \u0111\u1ed1i v\u1edbi \u1ee9ng d\u1ee5ng c\u1ea3m bi\u1ebfn<\/h2>\n

Khi ch\u1ecdn v\u1eadt li\u1ec7u t\u1eeb cho m\u1ee5c \u0111\u00edch c\u1ea3m bi\u1ebfn, m\u1ed9t s\u1ed1 \u0111\u1eb7c t\u00ednh n\u1ed5i b\u1eadt v\u00ec ch\u00fang \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u1ea3m bi\u1ebfn.<\/p>\n

Kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ea5t t\u1eeb<\/h3>\n

\u0110\u00e2y l\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ea5t t\u1eeb c\u1ee7a v\u1eadt li\u1ec7u khi ti\u1ebfp x\u00fac v\u1edbi c\u00e1c tr\u01b0\u1eddng t\u1eeb b\u00ean ngo\u00e0i ho\u1eb7c s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9. C\u01b0\u1ee1ng t\u1eeb cao c\u00f3 ngh\u0129a l\u00e0 c\u1ea3m bi\u1ebfn c\u1ee7a b\u1ea1n duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c theo th\u1eddi gian, tr\u00e1nh l\u1ec7ch t\u00edn hi\u1ec7u ho\u1eb7c h\u1ecfng h\u00f3c. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng c\u1ea3m bi\u1ebfn \u0111\u00e1ng tin c\u1eady, \u0111\u1eb7c bi\u1ec7t trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p>\n

L\u01b0u gi\u1eef t\u1eeb v\u00e0 m\u1eadt \u0111\u1ed9 d\u00f2ng t\u1eeb<\/h3>\n

L\u01b0u gi\u1eef t\u1eeb l\u00e0 t\u1eeb t\u00ednh c\u00f2n l\u1ea1i sau khi lo\u1ea1i b\u1ecf tr\u01b0\u1eddng t\u1eeb b\u00ean ngo\u00e0i. N\u00f3 quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 m\u1ea1nh c\u1ee7a t\u00edn hi\u1ec7u t\u1eeb c\u1ee7a c\u1ea3m bi\u1ebfn. L\u01b0u gi\u1eef t\u1eeb cao v\u00e0 m\u1eadt \u0111\u1ed9 flux t\u1eeb l\u1edbn h\u01a1n \u0111\u1ed3ng ngh\u0129a v\u1edbi \u0111\u1ed9 nh\u1ea1y t\u1ed1t h\u01a1n, cho ph\u00e9p c\u1ea3m bi\u1ebfn ph\u00e1t hi\u1ec7n c\u00e1c thay \u0111\u1ed5i nh\u1ecf trong tr\u01b0\u1eddng t\u1eeb. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng cho \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a c\u1ea3m bi\u1ebfn hi\u1ec7u \u1ee9ng Hall v\u00e0 c\u1ea3m bi\u1ebfn magnetoresistive.<\/p>\n

Nhi\u1ec7t \u0111\u1ed9 Curie v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t<\/h3>\n

Nhi\u1ec7t \u0111\u1ed9 Curie \u0111\u00e1nh d\u1ea5u \u0111i\u1ec3m m\u00e0 m\u1ed9t nam ch\u00e2m m\u1ea5t \u0111i t\u00ednh ch\u1ea5t t\u1eeb c\u1ee7a n\u00f3 do nhi\u1ec7t. C\u00e1c v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 Curie cao duy tr\u00ec hi\u1ec7u su\u1ea5t trong c\u00e1c thi\u1ebft l\u1eadp nhi\u1ec7t \u0111\u1ed9 cao, ph\u1ed5 bi\u1ebfn trong c\u1ea3m bi\u1ebfn \u00f4 t\u00f4 ho\u1eb7c c\u00f4ng nghi\u1ec7p. \u0110\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ea3m b\u1ea3o c\u00e1c ph\u00e9p \u0111o nh\u1ea5t qu\u00e1n qua c\u00e1c dao \u0111\u1ed9ng nhi\u1ec7t m\u00e0 kh\u00f4ng l\u00e0m h\u1ecfng v\u1eadt li\u1ec7u.<\/p>\n

\u0110\u1ed9 th\u1ea5m t\u1eeb v\u00e0 t\u1ed5n th\u1ea5t do l\u01b0\u1ee1ng c\u1ef1c<\/h3>\n

\u0110\u1ed9 th\u1ea5m t\u1eeb x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng m\u1ed9t v\u1eadt li\u1ec7u d\u1eabn truy\u1ec1n c\u00e1c tr\u01b0\u1eddng t\u1eeb. \u0110\u1ed9 th\u1ea5m cao gi\u00fap c\u1ea3m bi\u1ebfn ph\u1ea3n \u1ee9ng nhanh h\u01a1n v\u00e0 ch\u00ednh x\u00e1c h\u01a1n. M\u1ea5t hysteresis th\u1ea5p c\u00f3 ngh\u0129a l\u00e0 \u00edt n\u0103ng l\u01b0\u1ee3ng b\u1ecb l\u00e3ng ph\u00ed trong qu\u00e1 tr\u00ecnh t\u1eeb h\u00f3a, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c c\u1ea3m bi\u1ebfn ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c ho\u1eb7c \u1edf t\u1ed1c \u0111\u1ed9 cao.<\/p>\n

Kh\u00e1ng \u0103n m\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n m\u00f4i tr\u01b0\u1eddng<\/h3>\n

C\u1ea3m bi\u1ebfn th\u01b0\u1eddng ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t\u2014\u0111\u1ed9 \u1ea9m, h\u00f3a ch\u1ea5t, rung l\u1eafc v\u00e0 m\u00e0i m\u00f2n. V\u1eadt li\u1ec7u t\u1eeb c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t s\u1ebd b\u1ec1n h\u01a1n, gi\u1ea3m thi\u1ec3u h\u1ecfng h\u00f3c c\u1ea3m bi\u1ebfn v\u00e0 nhu c\u1ea7u b\u1ea3o tr\u00ec. L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u b\u1ec1n gi\u00fap c\u1ea3m bi\u1ebfn c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh ngo\u00e0i tr\u1eddi ho\u1eb7c trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p.<\/p>\n

Hi\u1ec3u r\u00f5 c\u00e1c \u0111\u1eb7c t\u00ednh n\u00e0y gi\u00fap b\u1ea1n ch\u1ecdn \u0111\u00fang v\u1eadt li\u1ec7u t\u1eeb ph\u00f9 h\u1ee3p c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 nh\u1ea1y, \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u1ed9 b\u1ec1n cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea3m bi\u1ebfn c\u1ee7a m\u00ecnh t\u1ea1i th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam.<\/p>\n

Ph\u00e2n t\u00edch so s\u00e1nh hi\u1ec7u su\u1ea5t, chi ph\u00ed v\u00e0 ph\u00f9 h\u1ee3p \u1ee9ng d\u1ee5ng<\/h2>\n

Khi ch\u1ecdn v\u1eadt li\u1ec7u t\u1eeb cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea3m bi\u1ebfn, vi\u1ec7c c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u su\u1ea5t, chi ph\u00ed v\u00e0 ph\u00f9 h\u1ee3p l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. C\u00e1c lo\u1ea1i nam ch\u00e2m kh\u00e1c nhau n\u1ed5i b\u1eadt trong c\u00e1c lo\u1ea1i c\u1ea3m bi\u1ebfn kh\u00e1c nhau, v\u00ec v\u1eady hi\u1ec3u r\u00f5 c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y gi\u00fap ch\u1ecdn \u0111\u00fang lo\u1ea1i ph\u00f9 h\u1ee3p.<\/p>\n

So s\u00e1nh c\u00e1c ch\u1ec9 s\u1ed1 hi\u1ec7u su\u1ea5t<\/h3>\n\n\n\n\n\n\n\n\n\n
V\u1eadt li\u1ec7u t\u1eeb<\/th>\nM\u1eadt \u0111\u1ed9 N\u0103ng l\u01b0\u1ee3ng<\/th>\nKh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ea5t t\u1eeb<\/th>\n\u1ed4n \u0111\u1ecbnh nhi\u1ec7t<\/th>\nCh\u1ed1ng \u0103n m\u00f2n<\/th>\nT\u00ednh ph\u00f9 h\u1ee3p cho vi\u1ec7c thu nh\u1ecf<\/th>\n<\/tr>\n<\/thead>\n
Neodymium (NdFeB)<\/td>\nR\u1ea5t cao<\/td>\nTrung b\u00ecnh<\/td>\nV\u1eeba ph\u1ea3i<\/td>\nTh\u1ea5p<\/td>\nXu\u1ea5t s\u1eafc<\/td>\n<\/tr>\n
Cobalt Samari (SmCo)<\/td>\nCao<\/td>\nCao<\/td>\nXu\u1ea5t s\u1eafc<\/td>\nXu\u1ea5t s\u1eafc<\/td>\nV\u1eeba ph\u1ea3i<\/td>\n<\/tr>\n
S\u1eaft ferrit<\/td>\nTh\u1ea5p<\/td>\nTrung b\u00ecnh<\/td>\nT\u1ed1t<\/td>\nR\u1ea5t t\u1ed1t<\/td>\nH\u1ea1n ch\u1ebf<\/td>\n<\/tr>\n
Alnico<\/td>\nV\u1eeba ph\u1ea3i<\/td>\nTh\u1ea5p<\/td>\nR\u1ea5t cao<\/td>\nV\u1eeba ph\u1ea3i<\/td>\nK\u00e9m<\/td>\n<\/tr>\n
V\u00f4 \u0111\u1ecbnh h\u00ecnh\/Nanocrystalline<\/td>\nBi\u1ebfn \u0111\u1ed5i<\/td>\nCao<\/td>\nCao<\/td>\nT\u1ed1t<\/td>\nT\u1ed1t<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Hi\u1ec7u qu\u1ea3 chi ph\u00ed cho c\u00e1c lo\u1ea1i c\u1ea3m bi\u1ebfn<\/h3>\n
    \n
  • Neodymi<\/strong> nam ch\u00e2m mang l\u1ea1i hi\u1ec7u su\u1ea5t h\u00e0ng \u0111\u1ea7u v\u1edbi m\u1ee9c gi\u00e1 t\u1ea7m trung. Tuy\u1ec7t v\u1eddi cho c\u00e1c c\u1ea3m bi\u1ebfn c\u00f3 \u0111\u1ed9 nh\u1ea1y cao c\u1ea7n k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn.<\/li>\n
  • Samari C\u00f4ban<\/strong> c\u00f3 gi\u00e1 cao h\u01a1n nh\u01b0ng v\u01b0\u1ee3t tr\u1ed9i \u1edf nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n\u2014l\u00fd t\u01b0\u1edfng cho c\u00e1c c\u1ea3m bi\u1ebfn h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ho\u1eb7c \u00f4 t\u00f4.<\/li>\n
  • Nam ch\u00e2m ferrite<\/strong> c\u00f3 gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng h\u00e0ng ng\u00e0y, nh\u01b0ng ch\u00fang kh\u00f4ng h\u1ed7 tr\u1ee3 t\u1ed1t cho vi\u1ec7c thu nh\u1ecf.<\/li>\n
  • Alnico<\/strong> nam ch\u00e2m c\u00f3 gi\u00e1 cao h\u01a1n do s\u1ef1 ph\u1ee9c t\u1ea1p trong s\u1ea3n xu\u1ea5t v\u00e0 l\u1ef1c kh\u00e1ng t\u1eeb th\u1ea5p h\u01a1n c\u1ee7a ch\u00fang h\u1ea1n ch\u1ebf vi\u1ec7c s\u1eed d\u1ee5ng trong c\u00e1c thi\u1ebft k\u1ebf c\u1ea3m bi\u1ebfn hi\u1ec7n \u0111\u1ea1i.<\/li>\n
  • V\u1eadt li\u1ec7u v\u00f4 \u0111\u1ecbnh h\u00ecnh v\u00e0 nanocrystalline m\u1edbi n\u1ed5i<\/strong> mang l\u1ea1i hi\u1ec7u su\u1ea5t th\u00fa v\u1ecb nh\u01b0ng hi\u1ec7n t\u1ea1i v\u1edbi m\u1ee9c gi\u00e1 cao.<\/li>\n<\/ul>\n

    Ph\u00f9 h\u1ee3p theo \u1ee9ng d\u1ee5ng c\u1ea3m bi\u1ebfn<\/h3>\n
      \n
    • C\u1ea3m bi\u1ebfn hi\u1ec7u \u1ee9ng Hall:<\/strong> V\u1eadt li\u1ec7u Neodymium v\u00e0 v\u00f4 \u0111\u1ecbnh h\u00ecnh ph\u00f9 h\u1ee3p v\u1edbi nh\u1eefng lo\u1ea1i n\u00e0y v\u00ec nhu c\u1ea7u v\u1ec1 k\u00edch th\u01b0\u1edbc v\u00e0 \u0111\u1ed9 nh\u1ea1y.<\/li>\n
    • C\u1ea3m bi\u1ebfn t\u1eeb tr\u1edf:<\/strong> H\u01b0\u1edfng l\u1ee3i t\u1eeb c\u00e1c v\u1eadt li\u1ec7u c\u00f3 l\u1ef1c kh\u00e1ng t\u1eeb cao nh\u01b0 SmCo \u0111\u1ec3 c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u su\u1ea5t.<\/li>\n
    • C\u1ea3m bi\u1ebfn \u0111i\u1ec7n c\u1ea3m:<\/strong> Nam ch\u00e2m Ferrite ho\u1ea1t \u0111\u1ed9ng t\u1ed1t v\u1edbi chi ph\u00ed th\u1ea5p v\u00e0 nhu c\u1ea7u hi\u1ec7u su\u1ea5t v\u1eeba ph\u1ea3i.<\/li>\n
    • C\u1ea3m bi\u1ebfn v\u1ecb tr\u00ed v\u00e0 t\u1ed1c \u0111\u1ed9:<\/strong> Y\u00eau c\u1ea7u nam ch\u00e2m c\u00f3 \u0111\u1ed9 t\u1eeb d\u01b0 v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t nh\u1ea5t qu\u00e1n; SmCo v\u00e0 NdFeB l\u00e0 nh\u1eefng l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn.<\/li>\n<\/ul>\n

      \u1ea2nh h\u01b0\u1edfng c\u1ee7a k\u00edch th\u01b0\u1edbc v\u00e0 thu nh\u1ecf<\/h3>\n

      C\u00e1c c\u1ea3m bi\u1ebfn nh\u1ecf g\u1ecdn \u0111\u00f2i h\u1ecfi nam ch\u00e2m c\u00f3 m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng cao v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t. Nam ch\u00e2m Neodymium d\u1eabn \u0111\u1ea7u \u1edf \u0111\u00e2y do \u0111\u1ed9 m\u1ea1nh v\u00e0 k\u00edch th\u01b0\u1edbc nh\u1ecf c\u1ee7a ch\u00fang. Ng\u01b0\u1ee3c l\u1ea1i, ferrite g\u1eb7p kh\u00f3 kh\u0103n v\u00ec m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng th\u1ea5p h\u01a1n c\u00f3 ngh\u0129a l\u00e0 nam ch\u00e2m l\u1edbn h\u01a1n \u0111\u1ec3 c\u00f3 c\u00f9ng hi\u1ec7u su\u1ea5t. SmCo ph\u00f9 h\u1ee3p khi kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 ch\u1ed1ng \u0103n m\u00f2n l\u00e0 r\u1ea5t quan tr\u1ecdng, ngay c\u1ea3 khi k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n m\u1ed9t ch\u00fat. C\u00e1c v\u1eadt li\u1ec7u m\u1edbi n\u1ed5i c\u0169ng cho th\u1ea5y nhi\u1ec1u h\u1ee9a h\u1eb9n cho c\u00e1c c\u1ea3m bi\u1ebfn thu nh\u1ecf th\u1ebf h\u1ec7 ti\u1ebfp theo, k\u1ebft h\u1ee3p hi\u1ec7u su\u1ea5t v\u1edbi \u0111\u1ed9 b\u1ec1n.<\/p>\n

      Vi\u1ec7c ch\u1ecdn v\u1eadt li\u1ec7u t\u1eeb t\u00ednh ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1ch c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi \u1ee9ng d\u1ee5ng v\u00e0 ng\u00e2n s\u00e1ch c\u1ee7a c\u1ea3m bi\u1ebfn c\u1ee7a b\u1ea1n.<\/p>\n

      C\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng v\u00e0 v\u1eadn h\u00e0nh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u<\/h2>\n

      \"\"<\/p>\n

      Vi\u1ec7c ch\u1ecdn v\u1eadt li\u1ec7u t\u1eeb t\u00ednh ph\u00f9 h\u1ee3p cho c\u1ea3m bi\u1ebfn c\u00f3 ngh\u0129a l\u00e0 xem x\u00e9t kh\u00f4ng ch\u1ec9 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt hi\u1ec7u su\u1ea5t. C\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng v\u00e0 v\u1eadn h\u00e0nh \u0111\u00f3ng m\u1ed9t vai tr\u00f2 l\u1edbn trong vi\u1ec7c nam ch\u00e2m s\u1ebd duy tr\u00ec nh\u01b0 th\u1ebf n\u00e0o theo th\u1eddi gian.<\/p>\n

      Nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t<\/h3>\n

      C\u00e1c c\u1ea3m bi\u1ebfn s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p ho\u1eb7c \u0111\u1ed9ng c\u01a1 \u00f4 t\u00f4 th\u01b0\u1eddng ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. C\u00e1c v\u1eadt li\u1ec7u nh\u01b0 Samarium Cobalt (SmCo) v\u01b0\u1ee3t tr\u1ed9i \u1edf \u0111\u00e2y v\u00ec ch\u00fang ch\u1ed1ng ch\u1ecbu nhi\u1ec7t v\u00e0 \u0103n m\u00f2n t\u1ed1t h\u01a1n Neodymium (NdFeB), v\u1ed1n c\u00f3 th\u1ec3 m\u1ea5t t\u1eeb t\u00ednh khi qu\u00e1 n\u00f3ng. Nam ch\u00e2m ferrite c\u0169ng x\u1eed l\u00fd nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh t\u1ed1t nh\u01b0ng kh\u00f4ng ph\u00f9 h\u1ee3p cho \u0111i\u1ec1u ki\u1ec7n c\u1ef1c \u0111oan.<\/p>\n

      \u1ee8ng su\u1ea5t c\u01a1 h\u1ecdc v\u00e0 rung \u0111\u1ed9ng<\/h3>\n

      Trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ho\u1eb7c m\u00e1y m\u00f3c n\u1eb7ng, c\u1ea3m bi\u1ebfn ph\u1ea3i ch\u1ecbu rung \u0111\u1ed9ng li\u00ean t\u1ee5c v\u00e0 s\u1ed1c c\u01a1 h\u1ecdc. V\u1eadt li\u1ec7u t\u1eeb c\u1ea7n ch\u1ecbu \u0111\u1ef1ng \u0111i\u1ec1u n\u00e0y m\u00e0 kh\u00f4ng b\u1ecb n\u1ee9t ho\u1eb7c gi\u1ea3m hi\u1ec7u su\u1ea5t. Nam ch\u00e2m Alnico v\u00e0 SmCo n\u1ed5i ti\u1ebfng v\u1ec1 \u0111\u1ed9 b\u1ec1n \u1edf \u0111\u00e2y, trong khi c\u00e1c nam ch\u00e2m gi\u00f2n nh\u01b0 NdFeB y\u00eau c\u1ea7u thi\u1ebft k\u1ebf c\u1ea9n th\u1eadn \u0111\u1ec3 tr\u00e1nh h\u01b0 h\u1ecfng.<\/p>\n

      Tu\u1ed5i th\u1ecd v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a nam ch\u00e2m<\/h3>\n

      Nam ch\u00e2m y\u1ebfu d\u1ea7n theo th\u1eddi gian, \u0111\u1eb7c bi\u1ec7t trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t. Hi\u1ec3u r\u00f5 t\u00e1c \u0111\u1ed9ng c\u1ee7a qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a gi\u00fap d\u1ef1 \u0111o\u00e1n tu\u1ed5i th\u1ecd c\u1ea3m bi\u1ebfn. V\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 c\u01b0\u1ee1ng t\u1eeb cao, nh\u01b0 SmCo, c\u00f3 xu h\u01b0\u1edbng duy tr\u00ec t\u1eeb t\u00ednh l\u00e2u h\u01a1n. Nam ch\u00e2m NdFeB c\u00f3 th\u1ec3 m\u1ea5t s\u1ee9c m\u1ea1nh nhanh h\u01a1n n\u1ebfu ti\u1ebfp x\u00fac v\u1edbi \u0111\u1ed9 \u1ea9m ho\u1eb7c nhi\u1ec7t, do \u0111\u00f3 l\u1edbp ph\u1ee7 v\u00e0 b\u1ea3o tr\u00ec \u0111\u00fang c\u00e1ch r\u1ea5t quan tr\u1ecdng.<\/p>\n

      Khi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u t\u1eeb cho c\u1ea3m bi\u1ebfn trong th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam, h\u00e3y l\u01b0u \u00fd \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng v\u00e0 m\u1ee9c \u0111\u1ed9 c\u0103ng th\u1eb3ng d\u1ef1 ki\u1ebfn. Ph\u00f9 h\u1ee3p \u0111\u1ed9 b\u1ec1n v\u00e0 \u1ed5n \u0111\u1ecbnh c\u1ee7a nam ch\u00e2m v\u1edbi m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng c\u1ee7a c\u1ea3m bi\u1ebfn \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 gi\u1ea3m chi ph\u00ed thay th\u1ebf.<\/p>\n

      C\u00e1c nghi\u00ean c\u1ee9u \u0111i\u1ec3n h\u00ecnh v\u1ec1 \u1ee9ng d\u1ee5ng c\u1ea3m bi\u1ebfn th\u00e0nh c\u00f4ng s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u t\u1eeb kh\u00e1c nhau<\/h2>\n

      H\u00e3y xem c\u00e1ch c\u00e1c v\u1eadt li\u1ec7u t\u1eeb kh\u00e1c nhau ho\u1ea1t \u0111\u1ed9ng trong c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea3m bi\u1ebfn th\u1ef1c t\u1ebf qua c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p, l\u00e0m n\u1ed5i b\u1eadt l\u00fd do t\u1ea1i sao \u0111\u1eb7c \u0111i\u1ec3m ri\u00eang c\u1ee7a ch\u00fang quan tr\u1ecdng.<\/p>\n

      Nam ch\u00e2m NdFeB trong c\u1ea3m bi\u1ebfn \u00f4 t\u00f4<\/h3>\n

      Nam ch\u00e2m Neodymium Iron Boron (NdFeB) l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u cho nhi\u1ec1u c\u1ea3m bi\u1ebfn \u00f4 t\u00f4 nh\u1edd v\u00e0o m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng cao<\/strong> v\u00e0 tr\u01b0\u1eddng t\u1eeb m\u1ea1nh. Ch\u00fang h\u1ed7 tr\u1ee3 trong:<\/p>\n

        \n
      • Ph\u00e1t hi\u1ec7n v\u1ecb tr\u00ed ch\u00ednh x\u00e1c (v\u00ed d\u1ee5, c\u1ea3m bi\u1ebfn tr\u1ee5c cam v\u00e0 tr\u1ee5c khu\u1ef7u)<\/li>\n
      • Ph\u00e1t hi\u1ec7n t\u1ed1c \u0111\u1ed9 (c\u1ea3m bi\u1ebfn t\u1ed1c \u0111\u1ed9 b\u00e1nh xe)<\/li>\n
      • Ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady ngay c\u1ea3 trong kh\u00f4ng gian nh\u1ecf g\u1ecdn nh\u1edd l\u1ee3i th\u1ebf v\u1ec1 k\u00edch th\u01b0\u1edbc<\/li>\n<\/ul>\n

        S\u1ee9c m\u1ea1nh t\u1eeb t\u00ednh m\u1ea1nh gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u1ed9 nh\u1ea1y c\u1ee7a c\u1ea3m bi\u1ebfn v\u00e0 hi\u1ec7u su\u1ea5t chung c\u1ee7a ph\u01b0\u01a1ng ti\u1ec7n.<\/p>\n

        Nam ch\u00e2m SmCo trong c\u1ea3m bi\u1ebfn h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/h3>\n

        Nam ch\u00e2m Samarium Cobalt (SmCo) t\u1ecfa s\u00e1ng trong h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 nh\u1edd v\u00e0o:<\/p>\n

          \n
        • Xu\u1ea5t s\u1eafc \u1ed5n \u0111\u1ecbnh nhi\u1ec7t<\/strong> \u1edf \u0111\u1ed9 cao l\u1edbn v\u00e0 bi\u1ebfn \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t<\/li>\n
        • \u01afu vi\u1ec7t kh\u00e1ng \u0103n m\u00f2n<\/strong>, gi\u00fap ch\u00fang b\u1ec1n b\u1ec9 d\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t<\/li>\n
        • \u1ed4n \u0111\u1ecbnh theo th\u1eddi gian, \u0111\u1ea3m b\u1ea3o c\u00e1c ph\u00e9p \u0111o c\u1ea3m bi\u1ebfn ch\u00ednh x\u00e1c, quan tr\u1ecdng cho an to\u00e0n bay v\u00e0 h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n<\/li>\n<\/ul>\n

          Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u1ea3m bi\u1ebfn \u0111\u1ecbnh h\u01b0\u1edbng v\u00e0 c\u01a1 ch\u1ebf truy\u1ec1n \u0111\u1ed9ng, n\u01a1i \u0111\u1ed9 tin c\u1eady l\u00e0 y\u1ebfu t\u1ed1 kh\u00f4ng th\u1ec3 th\u01b0\u01a1ng l\u01b0\u1ee3ng.<\/p>\n

          Nam ch\u00e2m ferrite trong c\u1ea3m bi\u1ebfn \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng<\/h3>\n

          Nam ch\u00e2m ferrite, m\u1eb7c d\u00f9 m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng th\u1ea5p h\u01a1n, l\u00e0 l\u1ef1a ch\u1ecdn v\u1eefng ch\u1eafc cho \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng nh\u1edd v\u00e0o:<\/p>\n

            \n
          • Chi ph\u00ed h\u1ee3p l\u00fd v\u00e0 kh\u1ea3 n\u0103ng ph\u1ed5 bi\u1ebfn r\u1ed9ng r\u00e3i<\/li>\n
          • Kh\u00e1ng \u0103n m\u00f2n v\u00e0 kh\u1eed t\u1eeb t\u1ed1t trong s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y<\/li>\n
          • \u1ee8ng d\u1ee5ng trong c\u1ea3m bi\u1ebfn hi\u1ec7u \u1ee9ng Hall v\u00e0 c\u1ea3m bi\u1ebfn c\u1ea3m \u1ee9ng nh\u1ecf nh\u01b0 trong \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh v\u00e0 thi\u1ebft b\u1ecb gia d\u1ee5ng<\/li>\n<\/ul>\n

            Ch\u00fang c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u su\u1ea5t v\u00e0 gi\u00e1 c\u1ea3 ph\u00f9 h\u1ee3p cho c\u00e1c gi\u1ea3i ph\u00e1p c\u1ea3m bi\u1ebfn th\u1ecb tr\u01b0\u1eddng \u0111\u1ea1i ch\u00fang.<\/p>\n

            Gi\u1ea3i ph\u00e1p v\u1eadt li\u1ec7u t\u1eeb c\u1ee7a NBAEM d\u00e0nh cho kh\u00e1ch h\u00e0ng c\u1ea3m bi\u1ebfn<\/h3>\n

            NBAEM, nh\u00e0 cung c\u1ea5p v\u1eadt li\u1ec7u t\u1eeb t\u00ednh c\u1ee7a Trung Qu\u1ed1c, t\u00f9y ch\u1ec9nh v\u1eadt li\u1ec7u t\u1eeb ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u nhu c\u1ea7u c\u1ea3m bi\u1ebfn kh\u00e1c nhau:<\/p>\n

              \n
            • Cung c\u1ea5p nam ch\u00e2m NdFeB t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea3m bi\u1ebfn \u00f4 t\u00f4 v\u00e0 c\u00f4ng nghi\u1ec7p<\/li>\n
            • Cung c\u1ea5p nam ch\u00e2m SmCo \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ecbu \u0111\u1ef1ng c\u00e1c th\u1eed th\u00e1ch v\u1ec1 nhi\u1ec7t v\u00e0 \u0103n m\u00f2n c\u1ea5p \u0111\u1ed9 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/li>\n
            • Cung c\u1ea5p v\u1eadt li\u1ec7u ferrite v\u00e0 v\u1eadt li\u1ec7u nanocrystalline m\u1edbi n\u1ed5i cho c\u1ea3m bi\u1ebfn \u0111i\u1ec7n t\u1eed c\u00f3 chi ph\u00ed th\u1ea5p v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c cao<\/li>\n<\/ul>\n

              T\u1eadp trung v\u00e0o nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n \u0111\u1ea3m b\u1ea3o v\u1eadt li\u1ec7u \u0111\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam v\u1ec1 hi\u1ec7u su\u1ea5t nam ch\u00e2m c\u1ea3m bi\u1ebfn<\/strong> v\u00e0 \u0111\u1ed9 b\u1ec1n.<\/p>\n\n\n\n\n\n\n\n\n
              V\u1eadt li\u1ec7u t\u1eeb<\/th>\n\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/th>\n\u01afu \u0111i\u1ec3m ch\u00ednh<\/th>\n\u0110i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a NBAEM<\/th>\n<\/tr>\n<\/thead>\n
              NdFeB<\/td>\nC\u1ea3m bi\u1ebfn \u00f4 t\u00f4<\/td>\nN\u0103ng l\u01b0\u1ee3ng cao, nh\u1ecf g\u1ecdn<\/td>\nC\u00e1c lo\u1ea1i t\u00f9y ch\u1ec9nh cho c\u1ea3m bi\u1ebfn nh\u1ea1y c\u1ea3m<\/td>\n<\/tr>\n
              SmCo<\/td>\nC\u1ea3m bi\u1ebfn h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/td>\n\u1ed4n \u0111\u1ecbnh nhi\u1ec7t, ch\u1ed1ng \u0103n m\u00f2n<\/td>\nC\u00f4ng th\u1ee9c \u1ed5n \u0111\u1ecbnh nhi\u1ec7t cao<\/td>\n<\/tr>\n
              S\u1eaft ferrit<\/td>\nThi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng<\/td>\nHi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed, ch\u1ed1ng \u0103n m\u00f2n<\/td>\nC\u00e1c t\u00f9y ch\u1ecdn ti\u00eau chu\u1ea9n v\u00e0 t\u00f9y ch\u1ec9nh<\/td>\n<\/tr>\n
              Nano-crystalline<\/td>\nC\u1ea3m bi\u1ebfn m\u1edbi n\u1ed5i<\/td>\n\u0110\u1ed9 nh\u1ea1y cao, t\u1ed5n th\u1ea5t th\u1ea5p<\/td>\nGi\u1ea3i ph\u00e1p s\u00e1ng t\u1ea1o cho \u0111\u1ed9 ch\u00ednh x\u00e1c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

              T\u1ed5ng quan nhanh n\u00e0y cho th\u1ea5y l\u00fd do t\u1ea1i sao vi\u1ec7c ch\u1ecdn v\u1eadt li\u1ec7u t\u1eeb t\u00ednh ph\u00f9 h\u1ee3p l\u1ea1i quan tr\u1ecdng trong \u1ee9ng d\u1ee5ng c\u1ea3m bi\u1ebfn\u2014v\u00e0 c\u00e1ch NBAEM h\u1ed7 tr\u1ee3 c\u00e1c y\u00eau c\u1ea7u th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam v\u1edbi c\u00e1c l\u1ef1a ch\u1ecdn \u0111\u00e1ng tin c\u1eady.<\/p>\n

              Xu h\u01b0\u1edbng t\u01b0\u01a1ng lai v\u00e0 \u0111\u1ed5i m\u1edbi trong v\u1eadt li\u1ec7u t\u1eeb cho c\u1ea3m bi\u1ebfn<\/h2>\n

              \"V\u1eadt<\/p>\n

              Khoa h\u1ecdc v\u1eadt li\u1ec7u \u0111ang th\u00fac \u0111\u1ea9y c\u1ea3m bi\u1ebfn t\u1eeb t\u00ednh l\u00ean nh\u1eefng c\u1ea5p \u0111\u1ed9 m\u1edbi. C\u00e1c ti\u1ebfn b\u1ed9 t\u1eadp trung v\u00e0o vi\u1ec7c c\u1ea3i thi\u1ec7n \u0111\u1ed9 nh\u1ea1y, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 thu nh\u1ecf\u2014\u0111i\u1ec1u then ch\u1ed1t cho c\u00e1c thi\u1ebft b\u1ecb th\u00f4ng minh v\u00e0 th\u1ecb tr\u01b0\u1eddng IoT ng\u00e0y c\u00e0ng ph\u00e1t tri\u1ec3n t\u1ea1i Vi\u1ec7t Nam. C\u00e1c c\u1ea3m bi\u1ebfn hi\u1ec7n nay \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i t\u1eeb c\u00e1c v\u1eadt li\u1ec7u t\u1eeb t\u00ednh th\u00edch \u1ee9ng v\u1edbi \u0111i\u1ec1u ki\u1ec7n thay \u0111\u1ed5i, l\u00e0m cho ch\u00fang th\u00f4ng minh h\u01a1n v\u00e0 \u0111\u00e1ng tin c\u1eady h\u01a1n.<\/p>\n

              C\u00e1c v\u1eadt li\u1ec7u t\u1eeb t\u00ednh th\u00f4ng minh \u0111ang \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 t\u01b0\u01a1ng t\u00e1c tr\u1ef1c ti\u1ebfp v\u1edbi c\u1ea3m bi\u1ebfn IoT, cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh theo th\u1eddi gian th\u1ef1c d\u1ef1a tr\u00ean c\u00e1c thay \u0111\u1ed5i m\u00f4i tr\u01b0\u1eddng ho\u1eb7c nhu c\u1ea7u c\u1ee7a thi\u1ebft b\u1ecb. S\u1ef1 t\u00edch h\u1ee3p n\u00e0y c\u1ea3i thi\u1ec7n \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 gi\u1ea3m ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u1ea3m bi\u1ebfn di \u0111\u1ed9ng v\u00e0 kh\u00f4ng d\u00e2y.<\/p>\n

              M\u1ed9t xu h\u01b0\u1edbng l\u1edbn kh\u00e1c l\u00e0 b\u1ec1n v\u1eefng. Nhi\u1ec1u c\u00f4ng ty \u0111ang nghi\u00ean c\u1ee9u c\u00e1c v\u1eadt li\u1ec7u t\u1eeb t\u00ednh c\u00f3 th\u1ec3 t\u00e1i ch\u1ebf \u0111\u1ec3 gi\u1ea3m ch\u1ea5t th\u1ea3i v\u00e0 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng, \u01b0u ti\u00ean c\u1ee7a nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t t\u1ea1i Vi\u1ec7t Nam. Nh\u1eefng nam ch\u00e2m th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap n\u00e2ng cao hi\u1ec7u su\u1ea5t c\u1ea3m bi\u1ebfn m\u00e0 c\u00f2n ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c quy \u0111\u1ecbnh m\u00f4i tr\u01b0\u1eddng nghi\u00eam ng\u1eb7t v\u00e0 mong \u0111\u1ee3i c\u1ee7a ng\u01b0\u1eddi ti\u00eau d\u00f9ng t\u1ea1i Vi\u1ec7t Nam.<\/p>\n

              C\u00f9ng nhau, nh\u1eefng \u0111\u1ed5i m\u1edbi n\u00e0y \u0111ang \u0111\u1ecbnh h\u00ecnh t\u01b0\u01a1ng lai c\u1ee7a hi\u1ec7u su\u1ea5t nam ch\u00e2m c\u1ea3m bi\u1ebfn, cung c\u1ea5p c\u00e1c l\u1ef1a ch\u1ecdn hi\u1ec7u qu\u1ea3 h\u01a1n, b\u1ec1n h\u01a1n v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng cho nhi\u1ec1u \u1ee9ng d\u1ee5ng\u2014from \u00f4 t\u00f4 \u0111\u1ebfn c\u00f4ng nghi\u1ec7p v\u00e0 \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng.<\/p>","protected":false},"excerpt":{"rendered":"

              Kh\u00e1m ph\u00e1 ph\u00e2n t\u00edch so s\u00e1nh chi ti\u1ebft v\u1ec1 c\u00e1c v\u1eadt li\u1ec7u t\u1eeb cho \u1ee9ng d\u1ee5ng c\u1ea3m bi\u1ebfn, l\u00e0m n\u1ed5i b\u1eadt hi\u1ec7u su\u1ea5t, chi ph\u00ed v\u00e0 t\u00ednh ph\u00f9 h\u1ee3p t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p h\u00e0ng \u0111\u1ea7u t\u1ea1i Vi\u1ec7t Nam.<\/p>","protected":false},"author":1,"featured_media":2524,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2725","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/09\/Different-types-of-Magnetic-Sensor.png","_links":{"self":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/2725","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/comments?post=2725"}],"version-history":[{"count":3,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/2725\/revisions"}],"predecessor-version":[{"id":2823,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/2725\/revisions\/2823"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media\/2524"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media?parent=2725"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/categories?post=2725"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/tags?post=2725"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}