Dab tsi yog domains hauv magnetism?
Dab tsi yog domains hauv magnetism?

Video: Dab tsi yog domains hauv magnetism?

Video: Dab tsi yog domains hauv magnetism?
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A sib nqus domain yog ib cheeb tsam nyob rau hauv Sib nqus cov ntaub ntawv uas lub magnetization yog inauniform direction. Qhov no txhais tau tias tus kheej Sib nqus lub sij hawm ntawm cov atoms yog ua raws li ib leeg thiab lawv taw tes rau hauv tib txoj kev. Cov no yog cov ferromagnetic, ferrimagnetic thiab antiferromagnetic cov ntaub ntawv.

Tib neeg kuj nug, ua li cas sib nqus domains dlhos?

Ferromagnetic cov ntaub ntawv ua magnetized thaum lub sib nqus domains nyob rau hauv cov khoom yog ua ke . Qhov no tuaj yeem ua tau los ntawm kev tso cov khoom siv rau hauv ib qho muaj zog sab nraud Sib nqus teb los yog hla hluav taws xob los ntawm cov khoom siv. Ib txhia los yog tag nrho cov thaj chaw ua tau ua ke.

Ib yam li ntawd, txhais tau li cas los ntawm atomic dipoles thiab magnetic domains? Hauv ib atom Ib tug electron revolves aroundthenucleus. Qhov no ua rau cov Sib nqus dipole moment Mofthe atom . Yog li ib atom yog nws tus kheej a magnetic dipole . Sib nqus domains yog cov cheeb tsam ntawm a ferromagnetic material qhov twg ntau heev atomicmagnetic dipoles nyob rau hauv tib txoj kev.

Ntawm no, yuav ua li cas cov hlau nplaum sib nqus nyob rau hauv cov khoom sib nqus?

Sib nqus Domains . Inferromagnetic cov ntaub ntawv , cov pab pawg me ntawm atoms sib koom ua ke rau hauv thaj chaw hu ua thaj chaw , nyob rau hauv uas tag nrho cov theelectrons muaj tib yam Sib nqus kev taw qhia. Hauv feem ntau cov ntaub ntawv , atom yog npaj nyob rau hauv xws li ib txoj kev uas Sib nqus orientation ntawm ib tug electron rho tawm theorientation ntawm lwm tus.

Puas muaj cov hlau nplaum muaj zog muaj ntau dua?

Cov ntau dua taw tes nyob rau hauv tib txoj kev, lub muaj zog dua tag nrho cov teb. Txhua domain'smagnetic daim teb extends los ntawm nws sab qaum teb ncej mus rau sab qab teb ncej ntawm lub sau npe ua ntej ntawm nws. Hauv ib hlau nplaum , feem ntau los yog tag nrho cov thaj chaw taw tes rau tib txoj kev.

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