Yuav ua li cas tiv thaiv cov khoom sib nqus ntawm cov xim samarium cobalt mus tas li cov ntaub ntawv?
Lub tswvyim ntawm samarium-cobalt magnetism muaj xws li txhua yam khoom uas pom tau tias magnetism thaum tsis muaj qhov chaw seem magnetic. Cov neeg muaj ntau lub ntsiab txhais ntawm lub tswvyim no los ntawm kev nkag siab tob zog ntawm cov khoom sib txawv sib nqus thiab lawv cov khoom sib nqus. Thaum txhua lub magnetic ions nyob rau hauv thawj lub cell ntawm ib yam khoom taw tes rau nws txoj kev sib nqus, nws yog hu ua samarium-cobalt magnetism. Yog tias tsuas yog ib feem ntawm qhov sib txawv ntawm qhov ion los ntawm nws qhov kev sib nqus hlau, nws yog hu ua yttrium cobalt magnetism. Yog hais tias cov kev taw qhia uas sib txig sib nqus ions raug tswj kom sib, nws yog hu ua ruthenium-cobalt magnetism. Qhov tshwm sim sib nqus ntawm ib yam khoom muaj ib qho tseem ceeb heev uas nws tshwm sim.
Lub samarium-cobalt khoom siv phom sij tas li, uas yog hu ua cov hlau nplaum, yog ib yam khoom uas muaj nyob hauv cov khoom thiab nws muaj nws lub teb chaw magnetic, ob qho tib si thiab khoom cuav. Cov ntaub ntawv xyaw samivum cobalt yog feem ntau yog ua los ntawm hlau cov hlau thiab muaj zog hlau nplaum. Qee cov ntaub ntawv yog magnetized los ntawm qhov kev txiav txim ntawm ib sab nraud magnetic teb, thiab txawm hais tias lub sab nraud magnetic teb disappears, lub xeev magnetization tau tswj thiab magnetic, uas yog spontaneous magnetization.
