{"id":1363,"date":"2024-10-17T06:25:35","date_gmt":"2024-10-17T06:25:35","guid":{"rendered":"https:\/\/nbaem.com\/?p=1363"},"modified":"2025-09-18T04:15:27","modified_gmt":"2025-09-18T04:15:27","slug":"what-is-magnetic-permeability","status":"publish","type":"post","link":"https:\/\/nbaem.com\/cs\/what-is-magnetic-permeability\/","title":{"rendered":"Co je magnetick\u00e1 permeabilita"},"content":{"rendered":"<div class=\"post-single\">\n<div class=\"post-content\">\n<h2>Definice magnetick\u00e9 permeability<\/h2>\n<p>Magnetick\u00e1 permeabilita je z\u00e1kladn\u00ed vlastnost, kter\u00e1 m\u011b\u0159\u00ed schopnost materi\u00e1lu podporovat tvorbu magnetick\u00e9ho pole uvnit\u0159 sebe sama. V\u011bdecky je definov\u00e1na jako pom\u011br magnetick\u00e9 indukce (B) k intenzit\u011b magnetick\u00e9ho pole (H), vyj\u00e1d\u0159en\u00fd jako \u03bc = B \/ H. Jednodu\u0161e \u0159e\u010deno, ukazuje, jak snadno m\u016f\u017ee magnetick\u00e9 pole proniknout a existovat uvnit\u0159 materi\u00e1lu.<\/p>\n<p>Magnetick\u00e1 permeabilita se li\u0161\u00ed od magnetick\u00e9 susceptibility a relativn\u00ed permeability. Zat\u00edmco magnetick\u00e1 susceptibility odkazuje na to, jak moc se materi\u00e1l stane magnetizovan\u00fdm v reakci na aplikovan\u00e9 magnetick\u00e9 pole, relativn\u00ed permeabilita je pom\u011br permeability materi\u00e1lu k permeabilit\u011b voln\u00e9ho prostoru (vakua). Porozum\u011bn\u00ed t\u011bmto rozd\u00edl\u016fm pom\u00e1h\u00e1 objasnit, jak materi\u00e1ly interaguj\u00ed s magnetick\u00fdmi poli v r\u016fzn\u00fdch aplikac\u00edch.<\/p>\n<h2>Fyzik\u00e1ln\u00ed v\u00fdznam a jednotky magnetick\u00e9 permeability<\/h2>\n<p>Magnetick\u00e1 permeabilita souvis\u00ed se dv\u011bma kl\u00ed\u010dov\u00fdmi veli\u010dinami: magnetickou indukc\u00ed (B) a intenzitou magnetick\u00e9ho pole (H). Jednodu\u0161e \u0159e\u010deno,\u00a0<strong>B<\/strong>\u00a0znamen\u00e1 mno\u017estv\u00ed magnetick\u00e9ho pole proch\u00e1zej\u00edc\u00edho materi\u00e1lem, zat\u00edmco\u00a0<strong>H<\/strong>\u00a0je s\u00edla magnetick\u00e9ho pole aplikovan\u00e9ho na tento materi\u00e1l. Magnetick\u00e1 permeabilita (\u03bc) ukazuje, jak moc materi\u00e1l umo\u017e\u0148uje pr\u016fchod magnetick\u00fdch silo\u010dar, vypo\u010d\u00edt\u00e1no podle vzorce\u00a0<strong>\u03bc = B \/ H<\/strong>.<\/p>\n<p>Co se t\u00fd\u010de jednotek, magnetick\u00e1 permeabilita se m\u011b\u0159\u00ed v\u00a0<strong>Henry na metr (H\/m)<\/strong>\u00a0v syst\u00e9mu SI. Existuj\u00ed dva typy, na kter\u00e9 je t\u0159eba pamatovat:<\/p>\n<ul>\n<li><strong>Absolutn\u00ed permeabilita (\u03bc)<\/strong>: skute\u010dn\u00e1 hodnota permeability pro materi\u00e1l.<\/li>\n<li><strong>Relativn\u00ed permeabilita (\u03bcr)<\/strong>: bezrozm\u011brn\u00fd pom\u011br porovn\u00e1vaj\u00edc\u00ed permeabilitu materi\u00e1lu s permeabilitou voln\u00e9ho prostoru.<\/li>\n<\/ul>\n<p>Permeabilita voln\u00e9ho prostoru, naz\u00fdvan\u00e1 tak\u00e9 permeabilita vakua (<strong>\u03bc0<\/strong>), je konstanta p\u0159ibli\u017en\u011b\u00a0<strong>4\u03c0 \u00d7 10\u207b\u2077 H\/m<\/strong>. Tato konstanta je z\u00e1kladn\u00edm bodem pro pochopen\u00ed, jak materi\u00e1ly reaguj\u00ed na magnetick\u00e1 pole ve srovn\u00e1n\u00ed s pr\u00e1zdn\u00fdm prostorem.<\/p>\n<h2>Typy magnetick\u00fdch materi\u00e1l\u016f na z\u00e1klad\u011b permeability<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/pub-36eea33d6f1540d281c285671ffb8664.r2.dev\/2025\/09\/18\/Magnetic_Materials_Permeability_Types_mn9ryXubI.webp\" alt=\"Typy permeabilit magnetick\u00fdch materi\u00e1l\u016f\" \/><\/p>\n<p>Magnetick\u00e9 materi\u00e1ly jsou hlavn\u011b rozd\u011bleny do t\u0159\u00ed typ\u016f na z\u00e1klad\u011b jejich magnetick\u00e9 permeability: diamagnetick\u00e9, paramagnetick\u00e9 a feromagnetick\u00e9.<\/p>\n<ul>\n<li><strong>Diamagnetick\u00e9 materi\u00e1ly<\/strong>\u00a0maj\u00ed velmi n\u00edzkou permeabilitu, \u010dasto m\u00e9n\u011b ne\u017e vakuum (\u03bc0). M\u00edrn\u011b odpuzuj\u00ed magnetick\u00e1 pole. P\u0159\u00edklady zahrnuj\u00ed m\u011b\u010f, bismut a zlato. Jejich permeabilita je bl\u00edzko 1 nebo dokonce m\u00edrn\u011b m\u00e9n\u011b, kdy\u017e je vyj\u00e1d\u0159ena jako relativn\u00ed permeabilita (\u03bcr).<\/li>\n<li><strong>Paramagnetick\u00e9 materi\u00e1ly<\/strong>\u00a0maj\u00ed relativn\u00ed permeabilitu m\u00edrn\u011b v\u011bt\u0161\u00ed ne\u017e 1. Slab\u011b p\u0159itahuj\u00ed magnetick\u00e1 pole, ale nezachov\u00e1vaj\u00ed magnetizaci po odstran\u011bn\u00ed pole. B\u011b\u017en\u00fdmi p\u0159\u00edklady jsou hlin\u00edk a platina. Tyto materi\u00e1ly vykazuj\u00ed mal\u00fd kladn\u00fd n\u00e1r\u016fst permeability ve srovn\u00e1n\u00ed s diamagnetick\u00fdmi materi\u00e1ly.<\/li>\n<li><strong>Feromagnetick\u00e9 materi\u00e1ly<\/strong>\u00a0vykazuj\u00ed velmi vysokou permeabilitu, n\u011bkdy tis\u00edckr\u00e1t v\u011bt\u0161\u00ed ne\u017e vakuum. Tyto materi\u00e1ly, jako \u017eelezo, kobalt a nikl, siln\u011b p\u0159itahuj\u00ed a mohou udr\u017eovat magnetick\u00e1 pole, co\u017e je kl\u00ed\u010dov\u00e9 pro mnoho magnetick\u00fdch aplikac\u00ed. Jejich permeabilita se v\u00fdrazn\u011b li\u0161\u00ed v z\u00e1vislosti na slo\u017een\u00ed a zpracov\u00e1n\u00ed, ale v\u017edy je mnohem v\u011bt\u0161\u00ed ne\u017e 1.<\/li>\n<\/ul>\n<p>Permeabilita p\u0159\u00edmo ovliv\u0148uje, jak materi\u00e1ly reaguj\u00ed na magnetick\u00e1 pole:<\/p>\n<ul>\n<li>Vysok\u00e1 permeabilita znamen\u00e1, \u017ee materi\u00e1l dob\u0159e vede magnetick\u00fd tok, \u010d\u00edm\u017e zvy\u0161uje v\u00fdkon a \u00fa\u010dinnost magnetu.<\/li>\n<li>Materi\u00e1ly s n\u00edzkou permeabilitou nab\u00edzej\u00ed minim\u00e1ln\u00ed magnetickou odezvu a mohou b\u00fdt pou\u017eity tam, kde je t\u0159eba minimalizovat magnetick\u00e9 ru\u0161en\u00ed.<\/li>\n<\/ul>\n<p>Porozum\u011bn\u00ed t\u011bmto rozd\u00edl\u016fm pom\u00e1h\u00e1 p\u0159i v\u00fdb\u011bru spr\u00e1vn\u00e9ho magnetick\u00e9ho materi\u00e1lu pro va\u0161i aplikaci, a\u0165 u\u017e jde o transform\u00e1tory, senzory nebo st\u00edn\u011bn\u00ed. Pro v\u00edce informac\u00ed o magnetick\u00fdch materi\u00e1lech a jejich magnetick\u00fdch vlastnostech si p\u0159e\u010dt\u011bte n\u00e1\u0161 pr\u016fvodce na t\u00e9ma\u00a0typy magnetick\u00fdch materi\u00e1l\u016f\u00a0a rozd\u00edly mezi\u00a0<span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/nbaem.com\/cs\/paramagnetic-and-diamagnetic-and-ferromagnetic\/\" target=\"_blank\" rel=\"noopener\">paramagnetick\u00fdmi a diamagnetick\u00fdmi materi\u00e1ly<\/a>.<\/span><\/p>\n<h2>Faktory ovliv\u0148uj\u00edc\u00ed magnetickou permeabilitu<\/h2>\n<p>Magnetick\u00e1 permeabilita nen\u00ed pevn\u00e1 hodnota \u2014 m\u011bn\u00ed se v z\u00e1vislosti na n\u011bkolika kl\u00ed\u010dov\u00fdch faktorech:<\/p>\n<ul>\n<li><strong>Teplota<\/strong>: S r\u016fstem teploty kles\u00e1 magnetick\u00e1 permeabilita v\u011bt\u0161iny materi\u00e1l\u016f. Nap\u0159\u00edklad feromagnetick\u00e9 materi\u00e1ly ztr\u00e1cej\u00ed svou vysokou permeabilitu bl\u00edzko Curieho teploty, kdy p\u0159est\u00e1vaj\u00ed b\u00fdt magneticky uspo\u0159\u00e1dan\u00e9.<\/li>\n<li><strong>Frekvence magnetick\u00e9ho pole<\/strong>: P\u0159i vy\u0161\u0161\u00edch frekvenc\u00edch n\u011bkter\u00e9 materi\u00e1ly vykazuj\u00ed sn\u00ed\u017eenou permeabilitu kv\u016fli efekt\u016fm, jako jsou v\u00ed\u0159iv\u00e9 proudy a hystereze. To znamen\u00e1, \u017ee materi\u00e1l, kter\u00fd funguje skv\u011ble p\u0159i n\u00edzk\u00fdch frekvenc\u00edch, nemus\u00ed b\u00fdt tak \u00fa\u010dinn\u00fd p\u0159i r\u00e1diov\u00fdch nebo mikrovlnn\u00fdch frekvenc\u00edch.<\/li>\n<li><strong>Slo\u017een\u00ed a struktura materi\u00e1lu<\/strong>: Typ prvk\u016f v materi\u00e1lu a jeho vnit\u0159n\u00ed struktura siln\u011b ovliv\u0148uj\u00ed permeabilitu. \u010cistota, velikost zrn a krystalov\u00e1 orientace mohou v\u0161echny m\u011bnit, jak snadno proch\u00e1zej\u00ed magnetick\u00e1 pole.<\/li>\n<li><strong>Vn\u011bj\u0161\u00ed vlivy<\/strong>: Nap\u011bt\u00ed nebo mechanick\u00e9 deformace mohou m\u011bnit magnetick\u00e9 dom\u00e9ny uvnit\u0159 materi\u00e1lu, co\u017e ovliv\u0148uje permeabilitu. Tak\u00e9 kdy\u017e se materi\u00e1l bl\u00ed\u017e\u00ed magnetick\u00e9 saturaci \u2014 co\u017e znamen\u00e1, \u017ee v\u011bt\u0161ina jeho magnetick\u00fdch dom\u00e9n je zarovn\u00e1na \u2014 jeho permeabilita kles\u00e1, proto\u017ee nem\u016f\u017ee podporovat siln\u011bj\u0161\u00ed magnetick\u00e9 pole.<\/li>\n<\/ul>\n<p>Porozum\u011bn\u00ed t\u011bmto faktor\u016fm pom\u00e1h\u00e1 p\u0159i v\u00fdb\u011bru magnetick\u00fdch materi\u00e1l\u016f pro specifick\u00e9 aplikace, zejm\u00e9na na trhu v \u010cesk\u00e9 republice, kde je d\u016fle\u017eit\u00fd v\u00fdkon za r\u016fzn\u00fdch podm\u00ednek.<\/p>\n<h2>M\u011b\u0159en\u00ed magnetick\u00e9 permeability<\/h2>\n<p>P\u0159esn\u00e9 m\u011b\u0159en\u00ed magnetick\u00e9 permeabilnosti je kl\u00ed\u010dem k pochopen\u00ed magnetick\u00e9ho chov\u00e1n\u00ed materi\u00e1lu. B\u011b\u017en\u00e9 techniky zahrnuj\u00ed\u00a0<strong>vibra\u010dn\u00ed magnetometry vzork\u016f (VSM)<\/strong>\u00a0a\u00a0<strong>impedan\u010dn\u00ed metody<\/strong>. VSM funguj\u00ed tak, \u017ee vibrac\u00ed vzorku v magnetick\u00e9m poli a detekc\u00ed magnetick\u00e9 odezvy, co\u017e nab\u00edz\u00ed p\u0159esn\u00e9 \u010dten\u00ed permeabilnosti zejm\u00e9na u mal\u00fdch nebo tenk\u00fdch vzork\u016f. Impedan\u010dn\u00ed metody spo\u010d\u00edvaj\u00ed v aplikaci st\u0159\u00eddav\u00e9ho proudu do c\u00edvky obto\u010den\u00e9 kolem materi\u00e1lu a anal\u00fdze, jak materi\u00e1l ovliv\u0148uje odpor a induk\u010dnost c\u00edvky.<\/p>\n<p>P\u0159i m\u011b\u0159en\u00ed permeabilnosti z\u00e1le\u017e\u00ed na praktick\u00fdch faktorech:<\/p>\n<ul>\n<li><strong>Tvar a velikost vzorku<\/strong>\u00a0mohou ovlivnit v\u00fdsledky kv\u016fli okrajov\u00fdm efekt\u016fm nebo nerovnom\u011brn\u00fdm pol\u00edm.<\/li>\n<li><strong>Frekvence aplikovan\u00e9ho magnetick\u00e9ho pole<\/strong>\u00a0ovliv\u0148uje m\u011b\u0159en\u00ed, proto\u017ee permeabilita se m\u016f\u017ee s frekvenc\u00ed m\u011bnit.<\/li>\n<li><strong>\u0158\u00edzen\u00ed teploty<\/strong>\u00a0je d\u016fle\u017eit\u00e9, proto\u017ee permeabilita se m\u011bn\u00ed s teplotou.<\/li>\n<li>Zaji\u0161t\u011bn\u00ed, \u017ee materi\u00e1l nen\u00ed bl\u00edzko\u00a0<strong>magnetick\u00e9 saturace<\/strong>\u00a0pom\u00e1h\u00e1 zabr\u00e1nit zkreslen\u00ed m\u011b\u0159en\u00ed.<\/li>\n<\/ul>\n<p>V\u00fdzvy vypl\u00fdvaj\u00ed z magnetick\u00e9 nelinearity materi\u00e1lu a vnit\u0159n\u00edho nap\u011bt\u00ed, kter\u00e9 mohou zp\u016fsobit odchylky v permeabilit\u011b. Nav\u00edc hraje roli i environment\u00e1ln\u00ed magnetick\u00fd \u0161um a kalibrace p\u0159\u00edstroje p\u0159i p\u0159esnosti m\u011b\u0159en\u00ed. P\u0159es tyto v\u00fdzvy, s vhodn\u00fdm za\u0159\u00edzen\u00edm a nastaven\u00edm, poskytuj\u00ed spolehliv\u00e1 m\u011b\u0159en\u00ed magnetick\u00e9 permeabilnosti d\u016fle\u017eit\u00e1 data pro aplikace magnetick\u00fdch materi\u00e1l\u016f.<\/p>\n<h2>Aplikace magnetick\u00e9 permeabilnosti v pr\u016fmyslu a technologi\u00edch<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/pub-36eea33d6f1540d281c285671ffb8664.r2.dev\/2025\/09\/18\/Magnetic_Permeability_in_Industrial_Applications_7.webp\" alt=\"Magnetick\u00e1 permeabilita v pr\u016fmyslov\u00fdch aplikac\u00edch\" \/><\/p>\n<p>Magnetick\u00e1 permeabilita hraje velkou roli v mnoha odv\u011btv\u00edch zde v \u010cesk\u00e9 republice, zejm\u00e9na tam, kde jsou magnetick\u00e9 materi\u00e1ly kl\u00ed\u010dov\u00e9. Nap\u0159\u00edklad\u00a0<strong>elektrick\u00e9 transform\u00e1tory a induktory<\/strong>\u00a0spol\u00e9hat se na materi\u00e1ly s vhodnou permeabilitou pro efektivn\u00ed veden\u00ed magnetick\u00fdch pol\u00ed a sn\u00ed\u017een\u00ed ztr\u00e1t energie. Bez spr\u00e1vn\u00e9 permeability tyto za\u0159\u00edzen\u00ed nemohou fungovat tak dob\u0159e nebo vydr\u017eet tak dlouho.<\/p>\n<p>Magnetick\u00e1 permeabilita m\u00e1 tak\u00e9 velk\u00fd v\u00fdznam v\u00a0<strong>magnetick\u00e1 st\u00edn\u011bn\u00ed<\/strong>. Kdy\u017e chcete chr\u00e1nit citlivou elektroniku p\u0159ed \u00faletov\u00fdmi magnetick\u00fdmi poli, materi\u00e1ly s vysokou nebo upravenou permeabilitou pom\u00e1haj\u00ed blokovat nebo p\u0159esm\u011brovat tato pole. To je kl\u00ed\u010dov\u00e9 v letectv\u00ed, medic\u00ednsk\u00fdch za\u0159\u00edzen\u00edch a dokonce i v spot\u0159ebn\u00ed elektronice.<\/p>\n<p>Dal\u0161\u00ed hlavn\u00ed oblast\u00ed je\u00a0<strong>ulo\u017ei\u0161t\u011b dat a magnetick\u00e9 senzory<\/strong>. Pevn\u00e9 disky a mnoho technologi\u00ed senzor\u016f z\u00e1vis\u00ed na materi\u00e1lech s ur\u010dit\u00fdmi hodnotami permeability pro p\u0159esn\u00e9 \u010dten\u00ed nebo ukl\u00e1d\u00e1n\u00ed magnetick\u00fdch sign\u00e1l\u016f. \u010c\u00edm lep\u0161\u00ed kontrola nad permeabilitou, t\u00edm vy\u0161\u0161\u00ed v\u00fdkon a spolehlivost t\u011bchto za\u0159\u00edzen\u00ed.<\/p>\n<p>Spole\u010dnosti jako NBAEM poskytuj\u00ed magnetick\u00e9 materi\u00e1ly s p\u0159esn\u00fdmi hodnotami permeability p\u0159izp\u016fsoben\u00fdmi pro tyto aplikace. Jejich materi\u00e1ly pom\u00e1haj\u00ed v\u00fdrobc\u016fm v \u010cesk\u00e9 republice splnit p\u0159\u00edsn\u00e9 specifikace t\u00edm, \u017ee zaji\u0161\u0165uj\u00ed konzistentn\u00ed magnetick\u00e9 chov\u00e1n\u00ed, co\u017e p\u0159\u00edmo ovliv\u0148uje \u00fa\u010dinnost a \u017eivotnost koncov\u00fdch produkt\u016f. A\u0165 u\u017e jde o energetick\u00e9 syst\u00e9my, st\u00edn\u011bn\u00ed nebo senzory, pou\u017eit\u00ed materi\u00e1l\u016f od NBAEM s navr\u017eenou permeabilitou m\u016f\u017ee v\u00fdrazn\u011b zlep\u0161it v\u00fdkon.<\/p>\n<h2>Magnetick\u00e1 permeabilita v pokro\u010dil\u00fdch materi\u00e1lech<\/h2>\n<p>Magnetick\u00e1 permeabilita hraje kl\u00ed\u010dovou roli p\u0159i rozli\u0161en\u00ed m\u011bkk\u00fdch a tvrd\u00fdch magnetick\u00fdch materi\u00e1l\u016f. M\u011bkk\u00e9 magnetick\u00e9 materi\u00e1ly, jako je silikonov\u00e1 ocel nebo ur\u010dit\u00e9 ferrity, maj\u00ed vysokou permeabilitu, co\u017e znamen\u00e1, \u017ee snadno podporuj\u00ed magnetick\u00e1 pole a rychle reaguj\u00ed na zm\u011bny. Ty jsou ide\u00e1ln\u00ed pro transform\u00e1tory, induktory a elektromagnety, kde je pot\u0159eba efektivn\u00ed magnetizace a demagnetizace. Naopak, tvrd\u00e9 magnetick\u00e9 materi\u00e1ly, nap\u0159\u00edklad vz\u00e1cn\u00e9 zem\u011b magnety, maj\u00ed ni\u017e\u0161\u00ed permeabilitu, ale d\u00e9le si udr\u017euj\u00ed magnetizaci, co\u017e je \u010din\u00ed kl\u00ed\u010dov\u00fdmi pro trval\u00e9 magnety.<\/p>\n<p>Ned\u00e1vn\u00e9 inovace se zam\u011b\u0159uj\u00ed na v\u00fdvoj magnetick\u00fdch materi\u00e1l\u016f s upravenou permeabilitou, aby splnily specifick\u00e9 po\u017eadavky. V\u011bdci vyv\u00edjej\u00ed kompozity a nano-strukturn\u00ed materi\u00e1ly, kter\u00e9 nab\u00edzej\u00ed \u0159\u00edzenou permeabilitu, \u010d\u00edm\u017e zlep\u0161uj\u00ed v\u00fdkon v za\u0159\u00edzen\u00edch, jako jsou vysokofrekven\u010dn\u00ed transform\u00e1tory nebo kompaktn\u00ed syst\u00e9my ukl\u00e1d\u00e1n\u00ed energie. Tyto pokroky umo\u017e\u0148uj\u00ed lep\u0161\u00ed kontrolu nad ztr\u00e1tami magnetick\u00e9ho pole a energetickou \u00fa\u010dinnost\u00ed.<\/p>\n<p>V\u00fdznam magnetick\u00e9 permeability je obzvl\u00e1\u0161t\u011b vysok\u00fd v nov\u011b vznikaj\u00edc\u00edch technologi\u00edch, jako jsou elektromagnetika a energetick\u00e1 za\u0159\u00edzen\u00ed. Nap\u0159\u00edklad:<\/p>\n<ul>\n<li>Efektivn\u00ed induktory a transform\u00e1tory v obnoviteln\u00fdch energetick\u00fdch syst\u00e9mech vy\u017eaduj\u00ed materi\u00e1ly s optimalizovanou permeabilitou pro minim\u00e1ln\u00ed ztr\u00e1ty energie.<\/li>\n<li>Motory elektrick\u00fdch vozidel profituj\u00ed z magnetick\u00fdch materi\u00e1l\u016f navr\u017een\u00fdch s c\u00edlem zlep\u0161it to\u010div\u00fd moment a sn\u00ed\u017eit velikost.<\/li>\n<li>Pokro\u010dil\u00e9 senzory a aktiv\u00e1tory spol\u00e9haj\u00ed na materi\u00e1ly, u nich\u017e lze permeabilitu jemn\u011b ladit pro p\u0159esnost a odezvu.<\/li>\n<\/ul>\n<p>Porozum\u011bn\u00ed permeabilit\u011b modern\u00edch magnetick\u00fdch materi\u00e1l\u016f pom\u00e1h\u00e1 v\u00fdrobc\u016fm na trhu v \u010cesk\u00e9 republice navrhovat lep\u0161\u00ed produkty pro odv\u011btv\u00ed od automobilov\u00e9ho pr\u016fmyslu po obnoviteln\u00e9 zdroje energie. V\u00edce o magnetick\u00fdch materi\u00e1lech a jejich klasifikac\u00edch najdete\u00a0<strong><span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/nbaem.com\/cs\/type-of-magnetic-materials\/\" target=\"_blank\" rel=\"noopener\">Typy magnetick\u00fdch materi\u00e1l\u016f<\/a>\u00a0<\/span><\/strong>a prozkoumejte ned\u00e1vn\u00fd v\u00fdzkum na\u00a0<strong><span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/nbaem.com\/cs\/recent-advances-in-magnetic-material-research\/\">Posledn\u00ed pokroky ve v\u00fdzkumu magnetick\u00fdch materi\u00e1l\u016f<\/a>.<\/span><\/strong><\/p>\n<\/div>\n<\/div>\n<nav class=\"post-navigation thw-sept\">\n<div class=\"row no-gutters\">\n<div class=\"col-12 col-md-6\"><\/div>\n<\/div>\n<\/nav>","protected":false},"excerpt":{"rendered":"<p>Definice magnetick\u00e9 permeabilityMagnetick\u00e1 permeabilita je z\u00e1kladn\u00ed vlastnost, kter\u00e1 m\u011b\u0159\u00ed schopnost materi\u00e1lu podporovat tvorbu magnetick\u00e9ho pole uvnit\u0159 sebe sama. V\u011bdecky je definov\u00e1na jako pom\u011br magnetick\u00e9 indukce (B) k intenzit\u011b magnetick\u00e9ho pole (H), vyj\u00e1d\u0159en\u00fd jako \u03bc = B \/ H. Jednodu\u0161e \u0159e\u010deno,<\/p>","protected":false},"author":1,"featured_media":0,"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-1363","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/1363","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/comments?post=1363"}],"version-history":[{"count":2,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/1363\/revisions"}],"predecessor-version":[{"id":2896,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/1363\/revisions\/2896"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/media?parent=1363"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/categories?post=1363"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/tags?post=1363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}