Ferrite Nplhaib Magnet

Ferrite Nplhaib Magnet

Ferrite yog ib yam tshiab ntawm cov khoom siv hlau nplaum uas tsis yog hlau tsim nyob rau xyoo 1940s. Nws yog qee zaum hu ua magnetic porcelain vim nws txoj kev npaj thiab zoo li cov ceramics. Ferrite feem ntau yog hais txog cov khoom sib xyaw oxide ntawm cov hlau hlau thiab ib lossis ntau dua lwm cov hlau tsim nyog, uas belongs rau semiconductor thiab siv los ua cov khoom sib nqus.

Cov oxide sib xyaw ua ke ntawm cov hlau oxide thiab ib lossis ob peb lwm cov hlau oxides (xws li BaO·6Fe2O3, MnO·Fe2O3·ZnO·Fe2O3, thiab lwm yam) hu ua ferrite. Ferrite nrog ferrimagnetism yog ib yam khoom muaj zog sib nqus, feem ntau hu ua ferrite magnetic khoom. FeO·Fe2O3 (Fe3O4) yog qhov yooj yim tshaj plaws thiab ntxov tshaj plaws siv cov khoom siv hlau nplaum ferrite hauv ntiaj teb.

ferrite magnetic cov ntaub ntawv tuaj yeem muab faib ua cov hlau nplaum mos, sib nqus sib nqus (nrog rau kev sib txuas), gyromagnetic, lub sijhawm sib nqus thiab piezoelectric thiab lwm yam ntaub ntawv ferrite.

Nta:Cov khoom sib nqus mos muaj qhov permeability siab, tsis tshua muaj zog quab yuam, thiab poob qis; Cov khoom siv hlau nplaum tawv muaj zog siab Hc thiab cov khoom siv hluav taws xob sib nqus siab (BH) m; gyromagnetic cov ntaub ntawv muaj gyromagnetic zog, uas yog, electromagnetic nthwv dej raws li thaum cov kev taw qhia ntawm ib tug tas li magnetic teb propagates, lub vibration nto tsis tu ncua rotates raws cov kev taw qhia ntawm propagation. Gyromagnetic cov ntaub ntawv feem ntau yog siv nyob rau hauv microwave kev sib txuas lus. Lub sijhawm sib nqus cov khoom muaj lub voj voos BH hysteresis, uas yog siv rau hauv computer cia cores; cov khoom piezomagnetic muaj ib tug loj linear magnetostriction coefficient λs. Cov khoom siv hlau nplaum ferrite tau dav siv hauv computer, microwave kev sib txuas lus, TV, kev tswj tsis siv neeg, aerospace, instrumentation, kho mob, kev lag luam tsheb thiab lwm yam kev lag luam, ntawm cov khoom siv hlau nplaum thiab mos sib nqus ferrite feem ntau siv.