Remanence, coercivity, intrinsic coercivity thiab siab tshaj plaws magnetic zog khoom yog plaub feem ntau tsis siv los ntsuas cov khoom ntawm cov khoom sib nqus. Tsis tas li ntawd, peb feem ntau pom ob qhov tsis zoo hauv cov hlau nplaum tiav -- nto hlau nplaum thiab sib nqus flux (tseem hu ua magnetic flux).
NtoMagnetism
Qhov yooj yim nkag siab ntawm nto sib nqus yog qhov sib nqus induction kev siv zog ntawm cov npoo av, yog li nws tseem yog Gaussian GS lossis Tesla T, ntsuas ntsuas ntsuas yog Gaussian meter lossis ntsuas ntsuas nrog Hall nti.
Cov lus sib nqus yog hais txog qhov ntsuas ntsuas, tab sis nws yog qhov ntsuas me me ntawm tus nqi ntawm thaj chaw, thiab qhov sib nqus ntawm qhov sib nqus ntawm cov hlau nplaum hloov pauv, yog li cov ntsiab lus sib txawv ntawm lub rooj sib nqus feem ntau sib txawv. Rau daim ntawv thov teb uas yuav tsum tau siv qhov chaw sib nqus teb, qhov chaw magnetic teb los yog tus nqi sib nqus induction ntawm ib qho taw tes yog feem ntau suav tias yog ib qho tseem ceeb ntawm kev xav tau.
Lub rooj sib nqus thiab hlau nplaum siab txoj kab uas hla (sib nqus qhov siab thiab txoj kab uas hla piv, ntawm no qhov siab ntawm qhov siab lossis thickness yog magnetization kev taw qhia ntawm cov hlau nplaum), qhov siab dua qhov piv ntawm txoj kab uas hla ntawm lub rooj sib nqus ntau dua, uas yog, qhov loj dua qhov chaw ntawm qhov chaw perpendicular mus rau qhov kev taw qhia. ntawm magnetization, qis lub rooj sib nqus; Qhov loj dua qhov kev taw qhia magnetization loj, qhov siab dua qhov magnetic. Tsis tas li ntawd, Hall Cheebtsam ntawm Gauss meter ntawm cov tuam txhab sib txawv sib txawv, thiab cov lus sib nqus ntsuas los ntawm tib cov hlau nplaum kuj txawv me ntsis.