Spin magnetic cov ntaub ntawv
Kev sib nqus hlau nplaum ntawm cov ntaub ntawv sib nqus yog hais txog qhov tshwm sim uas lub dav hlau polarized electromagnetic nthwv dej yuav tsis tu ncua tig ib ncig ntawm kev nthuav tawm txawm hais tias lub dav hlau polarized electromagnetic tsis propagate hauv cov khoom nyob rau hauv ib qho kev taw qhia nyob rau hauv qhov kev txiav txim ntawm ob qho tib si perpendicular khov kho magnetic teb thiab electromagnetic yoj. magnetic teb. Txawm hais tias cov ntaub ntawv hlau thiab hlau kuj tseem muaj qee qhov sib nqus hlau nplaum, lawv tsis tuaj yeem siv vim tias tsis muaj kev tiv thaiv thiab poob tam sim no loj heev, thiab cov hluav taws xob tsis tuaj yeem nkag mus tob rau hauv lawv sab hauv. Yog li, daim ntawv thov ntawm ferrite spin magnetic khoom spin magnetism, nws dhau los ua qhov tshwj xeeb ntawm ferrite. Spin magnetic cov ntaub ntawv feem ntau yog siv nrog kev sib kis ntawm microwave waveguide lossis kis kab mob thiab lwm yam khoom ntawm ntau yam khoom siv microwave. Lawv feem ntau yog siv hauv cov khoom siv hluav taws xob xws li radar, kev sib txuas lus, navigation, thiab telemetry.
Momentary magnetic cov ntaub ntawv
Qhov no yog hais txog cov ntaub ntawv ferrite nrog cov kab hysteresis. Nws yog tus cwj pwm los ntawm qhov tseeb tias thaum muaj qhov me me sab nraud sib nqus, nws tuaj yeem sib nqus thiab saturated, thiab tom qab tshem tawm cov khoom sib nqus sab nraud, cov khoom sib nqus nyob twj ywm tib yam li thaum saturated. Xws li magnesium manganese ferrite, zoo li cov hlau nplaum xws li lithium manganese ferrite yog qhov no. Cov khoom siv ferrite no tsuas yog siv rau hauv lub cim xeeb ntawm ntau lub khoos phis tawj hluav taws xob, thiab lwm yam.
Cov khoom siv hlau nplaum
Cov khoom siv no yog hais txog kev sib nqus hauv cov kev taw qhia sib nqus rau cov tshuab elongation lossis luv luv ntawm cov ntaub ntawv ferrite, xws li nickel-zinc ferrite, npib tsib xee-tooj liab ferrite thiab nickel-chromium ferrite, thiab lwm yam. rau kev hloov dua siab tshiab ntawm electromagnetic zog thiab mechanical zog, thiab raws li magnetostrictive ntsiab rau ultrasound.
Cov khoom siv hlau nplaum mos
Cov ntaub ntawv no yooj yim rau magnetize thiab demagnetize nyob rau hauv tsis muaj zog magnetic teb, xws li zinc-chromium ferrite thiab nickel-zinc ferrite. Mos sib nqus ferrite yog ib yam khoom siv ferrite nrog kev siv dav, ntau yam, ntau qhov ntau thiab muaj nqi ntau lawm tam sim no. Nws yog tsuas yog siv los ua ntau yam inductive Cheebtsam, zoo li cov hlau nplaum xws li lim cores, transformer cores, xov tooj cua cores, nrog rau daim kab xev kaw thiab video hau, thiab lwm yam. Nws kuj yog ib qho tseem ceeb ntawm cov ntaub ntawv sib nqus.
Permanent Magnet Ferrite
Ib tug compound nrog ib tug uniaxially anisotropic hexagonal qauv. Feem ntau yog barium, strontium, lead ferrite thiab nws cov tshuaj tov khoom. Muaj homogeneous thiab anisotropic hlau nplaum. Txij li cov ntaub ntawv ferrite no khaws cov khoom muaj zog tas li tsis tu ncua sib nqus cov cuab yeej ntev tom qab qhov chaw magnetization sab nraud ploj mus, lawv tuaj yeem siv los tsim kom muaj qhov sib nqus thiab ruaj khov rau qhov chaw sab nraud. Lawv tau siv ntau yam kev siv, piv txwv li, ua cov hlau nplaum tas li nyob rau hauv ntau hom hluav taws xob ntsuas, tshuab hluav taws xob, xov tooj, hais lus, TV thiab microwave.
Cov khoom siv hlau nplaum nyuaj
Ferrite hard magnetic cov ntaub ntawv tsis yooj yim demagnetized tom qab magnetization, yog li ntawd, lawv tseem hu ua cov khoom sib nqus ruaj khov lossis cov khoom sib nqus tas li. Xws li barium ferrite, steel ferrite, thiab lwm yam. Zoo li cov hlau nplaum nws yog tsuas yog siv hauv kev sib txuas lus xws li recorders, pickups, speaker, magnetic cores of various instruments, etc.