Nyob rau hauv cov ntaub ntawv antiferromagnetic xws li chromium, hauv qab Neel kub ntawm 37 ° C, nyob rau hauv daim ntawv thov magnetic teb lub sij hawm nyob sib ze atomic yog antiparallel rau ib leeg, uas ua rau xoom net magnetization; yog li ntawd, tej yam zoo li no khoom tsis nkag siab rau qhov chaw sib nqus
Puas yog antiferromagnetic magnetic?
Antiferromagnetic zoo li ferromagnets tab sis lawv magnetic moments align antiparallel rau lub sijhawm nyob sib ze. Qhov kev sib raug zoo no tshwm sim sai sai hauv qab qhov ntsuas kub tseem ceeb hu ua Neel kub.
Qhov txawv ntawm ferromagnetism thiab antiferromagnetism yog dab tsi?
Ferromagnetism yog qhov muaj cov khoom sib nqus uas tau ua raws tib txoj hauv kev hauv cov khoom sib nqus. Antiferromagnetism yog lub xub ntiag ntawm cov khoom sib nqus uas tau ua raws cov lus qhia nyob rau hauv cov khoom sib nqus. Cov khoom sib nqus ntawm cov ntaub ntawv ferromagnetic yog nyob rau hauv tib txoj kev.
Cov ntaub ntawv dab tsi yog cov khoom sib nqus?
Cov khoom uas tuaj yeem ua kom muaj hlau nplaum, uas kuj yog cov khoom uas nyiam cov hlau nplaum, hu ua ferromagnetic (los yog ferrimagnetic). Cov no suav nrog cov ntsiab lus hlau, npib tsib xee thiab cob alt thiab lawv cov alloys, qee qhov alloys ntawm cov hlau tsis tshua muaj hauv ntiaj teb, thiab qee qhov tshwm sim tsis zoo xws li lodestone.
Puas yog cov khoom siv hlau nplaum tiv thaiv ferro?
Antiferromagnetic cov ntaub ntawv
Piv txwv suav nrog hematite, hlau xws li chromium, alloys xws li hlau manganese (FeMn), thiab oxides xws li nickel oxide (NiO). Kuj tseem muaj ntau qhov piv txwv ntawm cov hlau nuclear siab heev.
