ferromagnetism txhais
Ferromagnetism txhais tau hais tias lub sij hawm sib nqus ntawm cov atoms lossis ions nyob hauv ib yam khoom yog ntxig rau tib qho kev hauv tib cheeb tsam vim lawv kev cuam tshuam. Thaum qhov kev siv magnetic teb nce, qhov degree ntawm cov kawm tuab si lug ntawm lub sijhawm sib xyaw ua ke hauv cov cheeb tsam no yuav hloov. Qhov tshwm sim ntawm nce mus rau qee tus nqi txwv.