Ib lub hlau nplaum puas tuaj yeem tua cov khoom ferromagnetic?

Cov txheej txheem:

Ib lub hlau nplaum puas tuaj yeem tua cov khoom ferromagnetic?
Ib lub hlau nplaum puas tuaj yeem tua cov khoom ferromagnetic?

Video: Ib lub hlau nplaum puas tuaj yeem tua cov khoom ferromagnetic?

Video: Ib lub hlau nplaum puas tuaj yeem tua cov khoom ferromagnetic?
Video: Dais thiab nab qa sib xeem tsheb kauj vab 2024, Kaum ib hlis
Anonim

Magnets yog ib txwm nyiam rau ferromagnetic tshuaj xws li hlau, cob alt, npib tsib xee thiab cov alloys uas muaj lawv (piv txwv: steel). Ferromagnetic cov ntaub ntawv tsis tsuas yog tau txais kev nyiam rau cov hlau nplaum, tab sis lawv tuaj yeem khaws cov khoom sib nqus tom qab cov hlau nplaum raug tshem tawm.

Puas hlau nplaum nyiam rau ferromagnetic?

Ferromagnetism yog lub hauv paus txheej txheem uas qee cov ntaub ntawv (xws li hlau) tsim cov hlau nplaum ruaj khov, lossis nyiam cov hlau nplaum. … Tsuas yog ob peb yam khoom yog ferromagnetic Cov khoom siv yog hlau, cob alt, npib tsib xee thiab feem ntau ntawm lawv cov alloys, thiab qee qhov sib txuas ntawm cov hlau tsis tshua muaj ntiaj teb.

Yuav ua li cas cov hlau nplaum tuaj yeem tiv taus?

Dej, ntoo, neeg, yas, graphite thiab plaster yog tag nrho cov piv txwv ntawm cov khoom siv diamagnetic. Thaum peb feem ntau xav txog cov ntaub ntawv no tsis yog-sib nqus, lawv tau tawm tsam (thiab raug tshem tawm los ntawm) ib qho chaw sib nqus. Qhov kev xav no tsis muaj zog, tsis muaj zog uas nyob hauv lub neej txhua hnub, nws tsis tsim nyog.

Qhov cuam tshuam ntawm cov hlau nplaum ntawm cov khoom ferromagnetic yog dab tsi?

Kub ntawm Curie point, atoms uas coj li cov hlau nplaum me me hauv cov ntaub ntawv ferromagnetic spontaneously dlhos lawv tus kheej. Lawv tig mus rau tib qho kev taw qhia, kom lawv cov magnetic teb txhawb ib leeg. Ib qho kev xav tau ntawm cov khoom siv ferromagnetic yog tias nws atoms lossis ions muaj lub sijhawm sib nqus mus tas li

Qhov twg tsis yog ferromagnetic khoom?

Mn yog paramagnetic vim nws cov hlau nplaum ploj thaum tsis muaj magnetic teb.

Pom zoo: