txuj ci kev tsim hluav taws xob
Kev tsim hluav taws xob yog hais txog cov txheej txheem uas cov hlau nplaum ua kom ua tiav macroscopic magnetization los ntawm kev sib nqus sau thiab hloov chaw phab ntsa raws li kev ua ntawm ib daim teb sab nraud. Kev tsim hluav taws xob piav qhia txog kev txhim kho ntawm qhov sib txawv ntawm cov hlau nplaum sib txawv ntawm cov khoom sib txawv thaum lub sijhawm tag nrho cov txheej txheem magnetization, uas yog, nws qhia meej txog cov txheej txheem los ntawm cov hlau nplaum sib txuas maj mam mus rau qhov kev taw qhia sab nraud sib nqus hauv qab qhov kev ua ntawm ib qhov chaw sib nqus.