puas hlau nplaum tau qaug zog

lub hlau nplaum puas qaug zog thaum lub sij hawm? Cov lus teb rau lo lus nug no yog nyob rau hauv physics ntawm magnetic cov ntaub ntawv.

Yuav kom nkag siab txog lub tswv yim no, ua ntej, peb yuav tsum lees paub tias cov hlau nplaum yog tsim los ntawm cov hlau nplaum me me uas txhua tus ua raws tib txoj kev. Thaum cov thawj tswj hwm no tau taw qhia tib yam, lawv tsim ib qho chaw sib nqus, muab cov hlau nplaum nws lub zog sib nqus.

Nyob rau tib lub sijhawm, cov khoom sib nqus no pib rov kho lawv tus kheej, maj mam hloov qhov chaw sib nqus ntawm cov hlau nplaum. Cov txheej txheem no yog hu ua magnetization reversal, thiab nws yog lub luag haujlwm rau qhov tsis muaj zog ntawm cov hlau nplaum.

Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias tsis yog tag nrho cov hlau nplaum thaum kawg yuav qaug zog. Cov hlau nplaum tas mus li, xws li cov uas ua los ntawm neodymium lossis samarium cobalt, yuav poob qis heev ntawm lawv lub zog sib nqus thaum lub sijhawm. Qhov no yog vim lawv qhov kev tiv thaiv siab rau demagnetization thiab lawv lub peev xwm khaws lawv cov khoom sib nqus rau lub sijhawm ntev.

Ntawm qhov tod tes, cov hlau nplaum ib ntus, xws li cov hlau ua los ntawm cov hlau, npib tsib xee, thiab cobalt, yuav poob lawv lub zog sib nqus thaum lub sijhawm. Qhov no yog vim hais tias lawv xav tau ib qho chaw sib nqus sab nraud los tswj lawv cov magnetization, thiab tsis muaj nws, cov thawj hauv cov hlau nplaum yuav maj mam poob lawv cov kev sib dhos, ua rau cov hlau nplaum tsis muaj zog.