Nkewa nke Igwe Ọdụdọ

Ihe ndị dị ka ígwè, cobalt, nickel ma ọ bụ ferrite dị iche n'ihi na enwere ike ịhazigharị igwe eletrik dị n'ime ya n'otu oge n'obere ebe iji mepụta mpaghara magnetization na-enweghị onwe, nke a na-akpọ ngalaba. Ihe ndọta nke ihe ferromagnetic, ngalaba ndọta dị n'ime nke ọma, ntụzịaka nke otu ahịrị ahụ, nke mere na ike ndọta, bụ ndọta.
Ụdị ihe ndọta ọ bụla na-adịgide adịgide, dị ka aluminom nickel na cobalt, samarium cobalt, ndfeb, ndị a bụkwa ndị nkịtị, magnetik dị ike nke ukwuu, ihe ndị a nwere ike ịbụ magnetization nke oghere magnetik nke magnetik mgbe niile, na mgbe magnetization n'onwe ya nwere magnetik. ma ghara ịla n'iyi. Ngwakọta nke magnet artificial na-adabere na arụmọrụ magnetization nke ọla dị iche iche ma kpebisie ike dịka mkpa ọ dị. Ihe ndọta dị nso (na-emetụ) ihe ndọta a na-eme ka ọ banye n'osisi na-abụghị nke dị nso n'otu nsọtụ yana n'osisi nke otu aha n'akụkụ nke ọzọ.

A. ndọta nwa oge (dị nro);
Ihe ọ pụtara: magnetism na-adịru nwa oge ma na-apụ n'anya mgbe e wepụrụ magnet. Ọmụmaatụ: mbọ, ígwè a kpụrụ akpụ.
B. Magnet na-adịgide adịgide (ike);
Ihe dị mkpa: mgbe magnetization gasịrị, magnetism nwere ike idowe ogologo oge. Ọmụmaatụ: ntu ígwè.

Enwere ọtụtụ ụdị magnetik, m ga-ekwu ebe a:
Enwere isi edemede abụọ nke ihe ndọta:
Nke mbụ bụ ihe ndọta na-adịgide adịgide (nke a makwaara dị ka magnetik siri ike): ihe ahụ n'onwe ya nwere njirimara nke nchekwa ndọta.
Nke abụọ ọ bụ nro magnetik (na-akpọkwa electromagnet): mkpa n'èzí electrify ikike na-emepụta magnetik ike, anyị na-ewepụghị ọ bụ magnet na-ekwu, ọ bụ na-arụtụ aka na-adịgide adịgide magnet ihe.
E nwekwara ụdị abụọ nke ihe ndọta na-adịgide adịgide:
Ụdị nke mbụ bụ: alloy na-adịgide adịgide magnetik ihe gụnyere obere ụwa na-adịgide adịgide magnetik ihe (ndfeb Nd2Fe14B), SmCo (samarium cobalt), NdNiCO (neodymium nickel cobalt).
Nke abụọ bụ Ferrite ihe ndọta na-adịgide adịgide, nke kewara n'ime Sintered Ferrite, Ferrite Magnet jikọtara ọnụ na injection Ferrite dị ka usoro mmepụta dị iche iche si dị. A na-ekewa usoro atọ ndị a na isotropic na heterotropic magnet dị ka nghazi dị iche iche nke kristal magnetik si dị.