Cov khoom siv hlau nplaum ua lub luag haujlwm tseem ceeb hauv lub ntiaj teb loj ntawm kev lag luam hlau nplaum. Cov khoom sib nqus ntawm cov ntaub ntawv no yog cov hauv paus hauv kev txav ntawm electrons hauv cov khoom. Thaum cov electrons txav ib ncig ntawm lub nucleus ntawm ib lub atom, lawv tsis tsuas yog txav mus rau hauv ib ncig, tab sis kuj nyob rau hauv ib tug spin motion, uas ua rau lub tsim ntawm lub sij hawm sib nqus ntawm cov electrons, uas nyob rau hauv lem ua lub hauv paus ntawm lub magnetic zog. cov khoom.
Magnetic domain theory ntxiv qhia qhov chaw ntawm cov hlau nplaum hauv cov khoom sib nqus. Nyob rau hauv cov ntaub ntawv ferromagnetic, lub sij hawm sib nqus ntawm atoms yog randomly teem nyob rau hauv tsis muaj ib tug sab nraud magnetic teb, thiab tag nrho tsis qhia magnetic zog. Txawm li cas los xij, thaum siv cov khoom sib nqus sab nraud, cov sij hawm sib nqus no yuav ua raws li cov kev taw qhia ntawm sab nraud magnetic teb, tsim magnetization. Cov khoom siv hlau nplaum khaws cia qee qhov ntawm cov hlau nplaum vim tias nws cov khoom sib nqus sab hauv tau raug rov kho dua thaum lub sij hawm magnetization.
