{"id":1825,"date":"2025-08-07T04:50:27","date_gmt":"2025-08-07T04:50:27","guid":{"rendered":"https:\/\/nbaem.com\/?p=1825"},"modified":"2025-08-07T04:56:50","modified_gmt":"2025-08-07T04:56:50","slug":"what-are-magnets-attracted-to","status":"publish","type":"post","link":"https:\/\/nbaem.com\/vi\/what-are-magnets-attracted-to\/","title":{"rendered":"C\u00e1c nam ch\u00e2m b\u1ecb thu h\u00fat b\u1edfi nh\u1eefng g\u00ec \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch b\u1eb1ng v\u1eadt li\u1ec7u t\u1eeb c\u00f4ng nghi\u1ec7p"},"content":{"rendered":"<p>B\u1ea1n c\u00f3 t\u00f2 m\u00f2 <strong>\u0111i\u1ec1u g\u00ec khi\u1ebfn nam ch\u00e2m b\u1ecb h\u00fat<\/strong> v\u00e0 t\u1ea1i sao m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u d\u00ednh ch\u1eb7t trong khi nh\u1eefng v\u1eadt li\u1ec7u kh\u00e1c th\u00ec kh\u00f4ng? Hi\u1ec3u r\u00f5 c\u00e1c v\u1eadt li\u1ec7u ph\u1ea3n \u1ee9ng v\u1edbi nam ch\u00e2m l\u00e0 ch\u00eca kh\u00f3a\u2014kh\u00f4ng ch\u1ec9 trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y m\u00e0 c\u00f2n trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p d\u1ef1a v\u00e0o c\u00f4ng ngh\u1ec7 t\u1eeb t\u00ednh. D\u00f9 b\u1ea1n l\u00e0 h\u1ecdc sinh, k\u1ef9 s\u01b0 hay doanh nghi\u1ec7p \u0111ang t\u00ecm ki\u1ebfm \u0111\u00fang <strong>v\u1eadt li\u1ec7u t\u1eeb t\u00ednh<\/strong>, n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 <strong>s\u1ee9c h\u00fat t\u1eeb t\u00ednh<\/strong> c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 ti\u1ec1n b\u1ea1c.<\/p>\n<p>Trong b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd kh\u00e1m ph\u00e1 khoa h\u1ecdc \u0111\u1eb1ng sau t\u1eeb t\u00ednh, nh\u1eefng kim lo\u1ea1i v\u00e0 v\u1eadt li\u1ec7u n\u00e0o th\u1ef1c s\u1ef1 ph\u1ea3n \u1ee9ng v\u1edbi nam ch\u00e2m, v\u00e0 c\u00e1ch ki\u1ebfn th\u1ee9c n\u00e0y \u00e1p d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf. S\u1eb5n s\u00e0ng \u0111\u1ec3 kh\u00e1m ph\u00e1 nh\u1eefng b\u00ed \u1ea9n c\u1ee7a nam ch\u00e2m v\u00e0 t\u00ecm hi\u1ec3u \u0111i\u1ec1u g\u00ec khi\u1ebfn ch\u00fang ho\u1ea1t \u0111\u1ed9ng? H\u00e3y b\u1eaft \u0111\u1ea7u n\u00e0o!<\/p>\n<h2>Nam ch\u00e2m l\u00e0 g\u00ec<\/h2>\n<p>Nam ch\u00e2m l\u00e0 m\u1ed9t v\u1eadt th\u1ec3 t\u1ea1o ra tr\u01b0\u1eddng t\u1eeb, \u0111\u00f3 l\u00e0 m\u1ed9t l\u1ef1c v\u00f4 h\u00ecnh c\u00f3 th\u1ec3 h\u00fat m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u nh\u1ea5t \u0111\u1ecbnh. N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, nam ch\u00e2m k\u00e9o m\u1ed9t s\u1ed1 kim lo\u1ea1i v\u1ec1 ph\u00eda ch\u00fang m\u00e0 kh\u00f4ng c\u1ea7n ti\u1ebfp x\u00fac v\u1eadt l\u00fd.<\/p>\n<p>C\u00f3 ba lo\u1ea1i nam ch\u00e2m ch\u00ednh b\u1ea1n n\u00ean bi\u1ebft:<\/p>\n<ul>\n<li><strong>Nam ch\u00e2m v\u0129nh c\u1eedu<\/strong>: Nh\u1eefng nam ch\u00e2m n\u00e0y duy tr\u00ec t\u1eeb t\u00ednh m\u1ecdi l\u00fac. V\u00ed d\u1ee5 bao g\u1ed3m nam ch\u00e2m t\u1ee7 l\u1ea1nh ho\u1eb7c d\u1ea3i t\u1eeb tr\u00ean th\u1ebb t\u00edn d\u1ee5ng. Ch\u00fang gi\u1eef \u0111\u1eb7c t\u00ednh t\u1eeb c\u1ee7a m\u00ecnh m\u00e0 kh\u00f4ng c\u1ea7n ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng.<\/li>\n<li><strong>Nam ch\u00e2m t\u1ea1m th\u1eddi<\/strong>: Nh\u1eefng nam ch\u00e2m n\u00e0y ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 nam ch\u00e2m khi ti\u1ebfp x\u00fac v\u1edbi tr\u01b0\u1eddng t\u1eeb. V\u00ed d\u1ee5, k\u1eb9p gi\u1ea5y c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh nam ch\u00e2m t\u1ea1m th\u1eddi khi g\u1ea7n m\u1ed9t nam ch\u00e2m m\u1ea1nh, nh\u01b0ng m\u1ea5t t\u1eeb t\u00ednh khi r\u1eddi xa.<\/li>\n<li><strong>Nam ch\u00e2m \u0111i\u1ec7n<\/strong>: Nh\u1eefng nam ch\u00e2m n\u00e0y ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng khi d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua m\u1ed9t cu\u1ed9n d\u00e2y qu\u1ea5n quanh l\u00f5i kim lo\u1ea1i. Ch\u00fang c\u00f3 th\u1ec3 b\u1eadt t\u1eaft, ph\u00f9 h\u1ee3p cho c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n v\u00e0 c\u1ea7n c\u1ea9u.<\/li>\n<\/ul>\n<p>S\u1ee9c m\u1ea1nh c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c nam ch\u00e2m ch\u00ednh l\u00e0 <strong>tr\u01b0\u1eddng t\u1eeb<\/strong> m\u00e0 ch\u00fang t\u1ea1o ra. Tr\u01b0\u1eddng n\u00e0y gi\u1ed1ng nh\u01b0 m\u1ed9t khu v\u1ef1c v\u00f4 h\u00ecnh xung quanh nam ch\u00e2m n\u01a1i c\u00e1c l\u1ef1c t\u1eeb ho\u1ea1t \u0111\u1ed9ng. \u0110\u00f3 l\u00e0 l\u00fd do g\u00e2y ra s\u1ee9c h\u00fat t\u1eeb, k\u00e9o c\u00e1c v\u1eadt li\u1ec7u nh\u1ea5t \u0111\u1ecbnh v\u1ec1 ph\u00eda nam ch\u00e2m. Hi\u1ec3u r\u00f5 tr\u01b0\u1eddng n\u00e0y l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 bi\u1ebft c\u00e1ch nam ch\u00e2m t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c kim lo\u1ea1i v\u00e0 v\u1eadt th\u1ec3 kh\u00e1c trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y c\u1ee7a ch\u00fang ta.<\/p>\n<h2>V\u1eadt li\u1ec7u Nam ch\u00e2m H\u00fat<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/Magnetic_Materials_and_Everyday_Magnetism_Uu2.webp\" alt=\"V\u1eadt li\u1ec7u t\u1eeb v\u00e0 t\u1eeb tr\u01b0\u1eddng h\u00e0ng ng\u00e0y\" \/><\/p>\n<p>Nam ch\u00e2m ch\u1ee7 y\u1ebfu b\u1ecb h\u00fat b\u1edfi c\u00e1c v\u1eadt li\u1ec7u ferromagnetic nh\u01b0 s\u1eaft, nickel v\u00e0 cobalt. Nh\u1eefng kim lo\u1ea1i n\u00e0y c\u00f3 c\u00e1c mi\u1ec1n t\u1eeb\u2014c\u00e1c v\u00f9ng nh\u1ecf n\u01a1i c\u00e1c h\u01b0\u1edbng t\u1eeb c\u1ee7a nguy\u00ean t\u1eed t\u1ef1 nhi\u00ean s\u1eafp x\u1ebfp theo chi\u1ec1u h\u01b0\u1edbng nh\u1ea5t \u0111\u1ecbnh\u2014l\u00e0m cho ch\u00fang ph\u1ea3n \u1ee9ng m\u1ea1nh v\u1edbi nam ch\u00e2m. Ch\u00ednh s\u1ef1 s\u1eafp x\u1ebfp n\u00e0y khi\u1ebfn nam ch\u00e2m d\u1ec5 d\u00e0ng h\u00fat ch\u00fang, \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao b\u1ea1n th\u01b0\u1eddng th\u1ea5y c\u00e1c s\u1ea3n ph\u1ea9m t\u1eeb kim lo\u1ea1i n\u00e0y c\u00f3 t\u00ednh t\u1eeb.<\/p>\n<p>Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c v\u1eadt li\u1ec7u paramagnetic v\u00e0 diamagnetic kh\u00f4ng ph\u1ea3n \u1ee9ng nhi\u1ec1u v\u1edbi tr\u01b0\u1eddng t\u1eeb. C\u00e1c v\u1eadt li\u1ec7u paramagnetic, nh\u01b0 nh\u00f4m v\u00e0 b\u1ea1ch kim, c\u00f3 electron kh\u00f4ng gh\u00e9p \u0111\u00f4i nh\u01b0ng hi\u1ec7u \u1ee9ng t\u1eeb c\u1ee7a ch\u00fang r\u1ea5t y\u1ebfu v\u00e0 ch\u1ec9 xu\u1ea5t hi\u1ec7n trong c\u00e1c tr\u01b0\u1eddng t\u1eeb m\u1ea1nh. C\u00e1c v\u1eadt li\u1ec7u diamagnetic nh\u01b0 \u0111\u1ed3ng, nh\u1ef1a v\u00e0 g\u1ed7 th\u1ef1c s\u1ef1 \u0111\u1ea9y nh\u1eb9 nam ch\u00e2m ra xa, m\u1eb7c d\u00f9 hi\u1ec7u \u1ee9ng n\u00e0y th\u01b0\u1eddng qu\u00e1 nh\u1ecf \u0111\u1ec3 nh\u1eadn th\u1ea5y.<\/p>\n<p>Khi n\u00f3i \u0111\u1ebfn c\u00e1c kim lo\u1ea1i ph\u1ed5 bi\u1ebfn v\u00e0 v\u1eadt d\u1ee5ng trong nh\u00e0, th\u00e9p (ch\u1ee9a s\u1eaft) l\u00e0 v\u1eadt li\u1ec7u t\u1eeb, nh\u00f4m v\u00e0 \u0111\u1ed3ng th\u00ec kh\u00f4ng, c\u00f2n c\u00e1c v\u1eadt li\u1ec7u h\u00e0ng ng\u00e0y nh\u01b0 nh\u1ef1a v\u00e0 g\u1ed7 th\u00ec kh\u00f4ng c\u00f3 t\u00ednh t\u1eeb. V\u00ec v\u1eady, c\u00e1c v\u1eadt nh\u01b0 nam ch\u00e2m t\u1ee7 l\u1ea1nh d\u00ednh v\u00e0o b\u1ec1 m\u1eb7t th\u00e9p nh\u01b0ng kh\u00f4ng d\u00ednh v\u00e0o lon nh\u00f4m ho\u1eb7c h\u1ed9p nh\u1ef1a.<\/p>\n<p>M\u1ed9t s\u1ed1 v\u00ed d\u1ee5 d\u1ec5 d\u00e0ng v\u1ec1 c\u00e1c v\u1eadt th\u1ec3 b\u1ecb h\u00fat b\u1edfi nam ch\u00e2m bao g\u1ed3m:<\/p>\n<ul>\n<li>C\u1eeda t\u1ee7 l\u1ea1nh v\u00e0 d\u1ee5ng c\u1ee5 b\u1eb1ng th\u00e9p<\/li>\n<li>Kim b\u1ea5m v\u00e0 \u0111inh s\u1eaft<\/li>\n<li>M\u1ed9t s\u1ed1 d\u1ee5ng c\u1ee5 nh\u00e0 b\u1ebfp l\u00e0m b\u1eb1ng h\u1ee3p kim niken ho\u1eb7c cobalt<\/li>\n<\/ul>\n<p>Hi\u1ec3u r\u00f5 c\u00e1c v\u1eadt li\u1ec7u m\u00e0 nam ch\u00e2m h\u00fat gi\u00fap ch\u00fang ta th\u1ea5y \u0111\u01b0\u1ee3c n\u01a1i nam ch\u00e2m ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y v\u00e0 c\u00f4ng nghi\u1ec7p. \u0110\u1ec3 bi\u1ebft th\u00eam v\u1ec1 nh\u1eefng g\u00ec nam ch\u00e2m h\u00fat, h\u00e3y xem h\u01b0\u1edbng d\u1eabn h\u1eefu \u00edch n\u00e0y v\u1ec1 <a href=\"https:\/\/nbaem.com\/vi\/what-does-magnets-attract%ef%bc%9f\/\">nam ch\u00e2m h\u00fat g\u00ec?<\/a><\/p>\n<h2>Khoa h\u1ecdc \u0111\u1eb1ng sau l\u1ef1c h\u00fat t\u1eeb tr\u01b0\u1eddng<\/h2>\n<p>Nam ch\u00e2m ho\u1ea1t \u0111\u1ed9ng nh\u1edd c\u00e1c c\u1ea5u tr\u00fac nh\u1ecf b\u00ean trong v\u1eadt li\u1ec7u g\u1ecdi l\u00e0 mi\u1ec1n t\u1eeb. \u0110\u00e2y l\u00e0 c\u00e1c nh\u00f3m nguy\u00ean t\u1eed c\u00f3 electron quay c\u00f9ng chi\u1ec1u. Khi \u0111\u1ee7 nhi\u1ec1u mi\u1ec1n n\u00e0y x\u1ebfp th\u00e0nh h\u00e0ng, ch\u00fang t\u1ea1o ra m\u1ed9t tr\u01b0\u1eddng t\u1eeb c\u00f3 th\u1ec3 h\u00fat c\u00e1c v\u1eadt li\u1ec7u nh\u1ea5t \u0111\u1ecbnh.<\/p>\n<p>\u1ede c\u1ea5p \u0111\u1ed9 nguy\u00ean t\u1eed, quay electron \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng. Electron ho\u1ea1t \u0111\u1ed9ng nh\u01b0 nh\u1eefng nam ch\u00e2m nh\u1ecf v\u00ec ch\u00ednh s\u1ef1 quay c\u1ee7a ch\u00fang. Khi nhi\u1ec1u electron trong m\u1ed9t v\u1eadt li\u1ec7u quay c\u00f9ng chi\u1ec1u v\u00e0 c\u00e1c mi\u1ec1n c\u1ee7a ch\u00fang x\u1ebfp h\u00e0ng, to\u00e0n b\u1ed9 v\u1eadt li\u1ec7u tr\u1edf n\u00ean t\u1eeb t\u00ednh.<\/p>\n<p>\u0110\u1ed9 t\u1eeb th\u1ea5m l\u00e0 thu\u1eadt ng\u1eef m\u00f4 t\u1ea3 m\u1ee9c \u0111\u1ed9 d\u1ec5 d\u00e0ng m\u1ed9t v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh nam ch\u00e2m. C\u00e1c v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 t\u1eeb th\u1ea5m cao, nh\u01b0 s\u1eaft, b\u1ecb nam ch\u00e2m h\u00fat m\u1ea1nh. Nam ch\u00e2m c\u00e0ng m\u1ea1nh v\u00e0 c\u00e1c mi\u1ec1n c\u00e0ng x\u1ebfp \u0111\u1ec1u, l\u1ef1c h\u00fat c\u00e0ng l\u1edbn.<\/p>\n<p>Nhi\u1ec7t \u0111\u1ed9 c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn l\u1ef1c h\u00fat t\u1eeb. Nhi\u1ec7t l\u00e0m cho c\u00e1c mi\u1ec1n m\u1ea5t s\u1ef1 x\u1ebfp h\u00e0ng, l\u00e0m y\u1ebfu \u0111i nam ch\u00e2m. \u0110\u00f3 l\u00e0 l\u00fd do nhi\u1ec7t c\u00f3 th\u1ec3 gi\u1ea3m ho\u1eb7c th\u1eadm ch\u00ed ph\u00e1 h\u1ee7y s\u1ee9c m\u1ea1nh t\u1eeb c\u1ee7a nam ch\u00e2m. Hi\u1ec3u \u0111i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3i th\u00edch t\u1ea1i sao m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u h\u00fat nam ch\u00e2m m\u1ea1nh h\u01a1n nh\u1eefng v\u1eadt kh\u00e1c.<\/p>\n<h2>Nh\u1eefng \u0111i\u1ec1u m\u00ea t\u00edn v\u00e0 hi\u1ec3u l\u1ea7m ph\u1ed5 bi\u1ebfn v\u1ec1 nam ch\u00e2m<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/magnet_myths_and_metal_attraction_facts_AwB.webp\" alt=\"nh\u1eefng \u0111i\u1ec1u m\u00ea t\u00edn v\u1ec1 nam ch\u00e2m v\u00e0 s\u1ef1 th\u1eadt v\u1ec1 l\u1ef1c h\u00fat kim lo\u1ea1i\" \/><\/p>\n<p>C\u00f3 nhi\u1ec1u \u0111i\u1ec1u m\u00ea t\u00edn v\u1ec1 nam ch\u00e2m g\u00e2y nh\u1ea7m l\u1eabn cho m\u1ecdi ng\u01b0\u1eddi, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1ec1 nh\u1eefng g\u00ec nam ch\u00e2m h\u00fat. M\u1ed9t \u0111i\u1ec1u m\u00ea t\u00edn l\u1edbn l\u00e0 <strong>t\u1ea5t c\u1ea3 kim lo\u1ea1i \u0111\u1ec1u l\u00e0 nam ch\u00e2m<\/strong>. \u0110i\u1ec1u n\u00e0y kh\u00f4ng \u0111\u00fang. Nam ch\u00e2m ch\u1ec9 h\u00fat m\u1ed9t s\u1ed1 kim lo\u1ea1i nh\u1ea5t \u0111\u1ecbnh, ch\u1ee7 y\u1ebfu l\u00e0 c\u00e1c v\u1eadt li\u1ec7u ferromagnetic nh\u01b0 s\u1eaft, cobalt v\u00e0 nickel. C\u00e1c kim lo\u1ea1i nh\u01b0 nh\u00f4m, \u0111\u1ed3ng v\u00e0 h\u1ee3p kim \u0111\u1ed3ng thau kh\u00f4ng b\u1ecb nam ch\u00e2m h\u00fat d\u00f9 ch\u00fang l\u00e0 kim lo\u1ea1i.<\/p>\n<p>M\u1ed9t hi\u1ec3u l\u1ea7m ph\u1ed5 bi\u1ebfn kh\u00e1c l\u00e0 <strong>nam ch\u00e2m h\u00fat m\u1ecdi v\u1eadt kim lo\u1ea1i<\/strong>. Tr\u00ean th\u1ef1c t\u1ebf, nhi\u1ec1u kim lo\u1ea1i kh\u00f4ng ph\u1ea3i l\u00e0 kim lo\u1ea1i t\u1eeb ho\u1eb7c ch\u1ec9 y\u1ebfu t\u1eeb. V\u00ed d\u1ee5, th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 th\u1ec3 t\u1eeb ho\u1eb7c kh\u00f4ng t\u00f9y thu\u1ed9c v\u00e0o th\u00e0nh ph\u1ea7n c\u1ee7a n\u00f3. Nh\u1ef1a, g\u1ed7 v\u00e0 c\u00e1c v\u1eadt li\u1ec7u phi kim lo\u1ea1i kh\u00e1c ho\u00e0n to\u00e0n kh\u00f4ng b\u1ecb h\u00fat b\u1edfi nam ch\u00e2m.<\/p>\n<p>M\u1ed9t v\u00ed d\u1ee5 r\u00f5 r\u00e0ng \u0111\u1ec3 l\u00e0m r\u00f5: b\u1ea1n c\u00f3 th\u1ec3 nh\u1eadn th\u1ea5y nam ch\u00e2m tr\u00ean t\u1ee7 l\u1ea1nh d\u00ednh v\u00e0o c\u1eeda th\u00e9p nh\u01b0ng kh\u00f4ng d\u00ednh v\u00e0o l\u1edbp v\u1ecf nh\u00f4m b\u00ean ngo\u00e0i. \u0110\u00f3 l\u00e0 v\u00ec th\u00e9p ch\u1ee9a s\u1eaft, l\u00e0 v\u1eadt li\u1ec7u t\u1eeb, trong khi nh\u00f4m th\u00ec kh\u00f4ng. V\u00ec v\u1eady, kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c v\u1eadt \u201ckim lo\u1ea1i\u201d xung quanh ch\u00fang ta \u0111\u1ec1u b\u1ecb nam ch\u00e2m h\u00fat.<\/p>\n<p>Hi\u1ec3u r\u00f5 nh\u1eefng \u0111i\u1ec1u n\u00e0y gi\u00fap tr\u00e1nh nh\u1ea7m l\u1eabn v\u00e0 hi\u1ec3u l\u1ea7m. \u0110\u1ec3 t\u00ecm hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a nam ch\u00e2m v\u00e0 c\u00e1c lo\u1ea1i nam ch\u00e2m kh\u00e1c nhau, b\u1ea1n c\u00f3 th\u1ec3 xem h\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/nbaem.com\/vi\/what-is-permanent-magnetism%ef%bc%9f\/\">nam ch\u00e2m v\u0129nh c\u1eedu l\u00e0 g\u00ec<\/a> v\u00e0 <a href=\"https:\/\/nbaem.com\/vi\/overview-for-types-of-magnets\/\">t\u1ed5ng quan v\u1ec1 c\u00e1c lo\u1ea1i nam ch\u00e2m<\/a>.<\/p>\n<h2>\u1ee8ng d\u1ee5ng c\u1ee7a l\u1ef1c h\u00fat t\u1eeb trong c\u00f4ng nghi\u1ec7p v\u00e0 \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y<\/h2>\n<p>Nam ch\u00e2m \u0111\u00f3ng vai tr\u00f2 l\u1edbn trong \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y c\u0169ng nh\u01b0 trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau t\u1ea1i Vi\u1ec7t Nam. M\u1ed9t \u1ee9ng d\u1ee5ng ch\u00ednh l\u00e0 trong t\u00e1i ch\u1ebf v\u00e0 ph\u00e2n lo\u1ea1i kim lo\u1ea1i. Nam ch\u00e2m m\u1ea1nh gi\u00fap ph\u00e2n lo\u1ea1i kim lo\u1ea1i ferromagnetic nh\u01b0 s\u1eaft v\u00e0 th\u00e9p kh\u1ecfi r\u00e1c th\u1ea3i, l\u00e0m qu\u00e1 tr\u00ecnh t\u00e1i ch\u1ebf nhanh h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n. Qu\u00e1 tr\u00ecnh n\u00e0y gi\u1ea3m thi\u1ec3u ch\u1ea5t th\u1ea3i ch\u00f4n l\u1ea5p v\u00e0 h\u1ed7 tr\u1ee3 c\u00e1c ho\u1ea1t \u0111\u1ed9ng b\u1ec1n v\u1eefng.<\/p>\n<p>Trong l\u0129nh v\u1ef1c \u0111i\u1ec7n t\u1eed, nam ch\u00e2m l\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong \u0111\u1ed9ng c\u01a1, c\u1ea3m bi\u1ebfn v\u00e0 nhi\u1ec1u thi\u1ebft b\u1ecb ch\u00fang ta s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y. T\u1eeb nh\u1eefng nam ch\u00e2m nh\u1ecf b\u00ean trong loa \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh \u0111\u1ebfn c\u00e1c nam ch\u00e2m l\u1edbn h\u01a1n trong \u0111\u1ed9ng c\u01a1 xe \u0111i\u1ec7n, l\u1ef1c h\u00fat t\u1eeb c\u1ee7a ch\u00fang gi\u00fap chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh chuy\u1ec3n \u0111\u1ed9ng v\u00e0 ph\u00e1t hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i v\u1ec1 v\u1ecb tr\u00ed ho\u1eb7c t\u1ed1c \u0111\u1ed9.<\/p>\n<p>NBAEM cung c\u1ea5p c\u00e1c lo\u1ea1i nam ch\u00e2m c\u00f4ng nghi\u1ec7p ch\u1ea5t l\u01b0\u1ee3ng cao, bao g\u1ed3m nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm, l\u00e0 nh\u1eefng lo\u1ea1i m\u1ea1nh nh\u1ea5t hi\u1ec7n c\u00f3. Nh\u1eefng nam ch\u00e2m n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi cao nh\u01b0 c\u1ea3m bi\u1ebfn ch\u00ednh x\u00e1c, \u0111\u1ed9ng c\u01a1 c\u00f4ng su\u1ea5t l\u1edbn v\u00e0 thi\u1ebft b\u1ecb n\u0103ng l\u01b0\u1ee3ng s\u1ea1ch. S\u1eed d\u1ee5ng v\u1eadt li\u1ec7u t\u1eeb c\u1ee7a NBAEM \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady v\u00e0 \u0111\u1ed9 b\u1ec1n cho c\u00e1c doanh nghi\u1ec7p trong l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t, \u0111i\u1ec7n t\u1eed v\u00e0 m\u00f4i tr\u01b0\u1eddng.<\/p>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam v\u1ec1 c\u00e1c lo\u1ea1i nam ch\u00e2m c\u1ee5 th\u1ec3 v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng c\u1ee7a ch\u00fang, h\u00e3y xem c\u00e1c t\u00e0i nguy\u00ean chi ti\u1ebft c\u1ee7a NBAEM v\u1ec1 <a href=\"https:\/\/nbaem.com\/vi\/what-is-high-performance-smco-magnets\/\" target=\"_blank\" rel=\"noopener\">nam ch\u00e2m SmCo hi\u1ec7u su\u1ea5t cao<\/a> v\u00e0 <a href=\"https:\/\/nbaem.com\/vi\/what-is-permanent-magnet\/\" target=\"_blank\" rel=\"noopener\">nam ch\u00e2m v\u0129nh c\u1eedu<\/a>.<\/p>\n<h2>C\u00e1ch ch\u1ecdn v\u1eadt li\u1ec7u t\u1eeb ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a b\u1ea1n<\/h2>\n<p>Vi\u1ec7c ch\u1ecdn v\u1eadt li\u1ec7u t\u1eeb ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 ch\u00ednh quan tr\u1ecdng \u0111\u1ed1i v\u1edbi m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng c\u1ee7a b\u1ea1n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng \u0111i\u1ec1u b\u1ea1n c\u1ea7n l\u01b0u \u00fd:<\/p>\n<ul>\n<li><strong>\u0110\u1ed9 m\u1ea1nh t\u1eeb t\u00ednh<\/strong>: C\u00e1c lo\u1ea1i nam ch\u00e2m c\u00f3 l\u1ef1c h\u00fat kh\u00e1c nhau. \u0110\u1ed1i v\u1edbi c\u00e1c c\u00f4ng vi\u1ec7c n\u1eb7ng, h\u00e3y ch\u1ecdn nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm m\u1ea1nh nh\u01b0 neodymium. \u0110\u1ed1i v\u1edbi c\u00e1c nhi\u1ec7m v\u1ee5 nh\u1eb9 h\u01a1n, nam ch\u00e2m g\u1ed1m ho\u1eb7c ferrite c\u00f3 th\u1ec3 \u0111\u1ee7.<\/li>\n<li><strong>Lo\u1ea1i v\u1eadt li\u1ec7u<\/strong>: Nam ch\u00e2m v\u0129nh c\u1eedu gi\u1eef \u0111\u01b0\u1ee3c t\u1eeb t\u00ednh theo th\u1eddi gian, trong khi nam ch\u00e2m t\u1ea1m th\u1eddi ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng khi c\u00f3 d\u00f2ng \u0111i\u1ec7n. Nam ch\u00e2m \u0111i\u1ec7n r\u1ea5t ph\u00f9 h\u1ee3p n\u1ebfu b\u1ea1n c\u1ea7n b\u1eadt t\u1eaft t\u1eeb t\u00ednh.<\/li>\n<li><strong>M\u00f4i tr\u01b0\u1eddng<\/strong>: M\u1ed9t s\u1ed1 nam ch\u00e2m ch\u1ecbu nhi\u1ec7t, \u0111\u1ed9 \u1ea9m ho\u1eb7c \u0103n m\u00f2n t\u1ed1t h\u01a1n nh\u1eefng lo\u1ea1i kh\u00e1c. V\u00ed d\u1ee5, nam ch\u00e2m neodymium m\u1ea5t s\u1ee9c m\u1ea1nh \u1edf nhi\u1ec7t \u0111\u1ed9 cao, nh\u01b0ng nam ch\u00e2m ph\u1ee7 cao su ch\u1ed1ng r\u1ec9 s\u00e9t.<\/li>\n<li><strong>Gi\u00e1 th\u00e0nh<\/strong>: C\u00e1c nam ch\u00e2m hi\u1ec7u su\u1ea5t cao th\u01b0\u1eddng c\u00f3 gi\u00e1 th\u00e0nh cao h\u01a1n. C\u00e2n b\u1eb1ng gi\u1eefa ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 ng\u00e2n s\u00e1ch l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 t\u00ecm ra s\u1ea3n ph\u1ea9m ph\u00f9 h\u1ee3p.<\/li>\n<\/ul>\n<p>T\u1ea1i NBAEM, ch\u00fang t\u00f4i cung c\u1ea5p \u0111a d\u1ea1ng c\u00e1c lo\u1ea1i nam ch\u00e2m c\u00f4ng nghi\u1ec7p, t\u1eeb nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm m\u1ea1nh \u0111\u1ebfn c\u00e1c l\u1ef1a ch\u1ecdn kinh t\u1ebf h\u01a1n. Ch\u00fang t\u00f4i hi\u1ec3u r\u00f5 nhu c\u1ea7u c\u1ee7a c\u00e1c doanh nghi\u1ec7p t\u1ea1i Vi\u1ec7t Nam v\u00e0 cung c\u1ea5p t\u01b0 v\u1ea5n ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea1n nh\u1eadn \u0111\u01b0\u1ee3c v\u1eadt li\u1ec7u t\u1eeb t\u1ed1t nh\u1ea5t cho d\u1ef1 \u00e1n c\u1ee7a m\u00ecnh.<\/p>\n<p>H\u00e3y li\u00ean h\u1ec7 v\u1edbi NBAEM \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n \u2014 \u0111\u1ed9i ng\u0169 c\u1ee7a ch\u00fang t\u00f4i s\u1eb5n s\u00e0ng gi\u00fap b\u1ea1n t\u00ecm ra gi\u1ea3i ph\u00e1p nam ch\u00e2m ho\u00e0n h\u1ea3o d\u1ef1a tr\u00ean \u1ee9ng d\u1ee5ng v\u00e0 ng\u00e2n s\u00e1ch c\u1ee7a b\u1ea1n. Li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i ngay h\u00f4m nay \u0111\u1ec3 b\u1eaft \u0111\u1ea7u.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u nam ch\u00e2m h\u00fat nh\u1eefng v\u1eadt g\u00ec bao g\u1ed3m kim lo\u1ea1i ferromagnetic v\u00e0 c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c. Kh\u00e1m ph\u00e1 c\u00e1ch nam ch\u00e2m ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p t\u1eeb tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p c\u1ee7a NBAEM.<\/p>","protected":false},"author":1,"featured_media":1824,"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-1825","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/what_are_magnets_attracted_to_LhC.webp","_links":{"self":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1825","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=1825"}],"version-history":[{"count":3,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1825\/revisions"}],"predecessor-version":[{"id":1840,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1825\/revisions\/1840"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media\/1824"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media?parent=1825"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/categories?post=1825"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/tags?post=1825"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}