Kuthekera kwa maginito osatha kuthandizira maginito akunja ndi chifukwa cha crystal anisotropy mkati mwa maginito omwe "amatseka" madera ang'onoang'ono a maginito.Maginito oyambilira akakhazikitsidwa, malowa amakhalabe ofanana mpaka mphamvu yopitilira maginito yotsekedwa ikagwiritsidwa ntchito, ndipo mphamvu yofunikira kuti isokoneze mphamvu ya maginito yomwe imapangidwa ndi maginito okhazikika imasiyanasiyana pazinthu zilizonse.Maginito osatha amatha kupanga kukakamiza kwambiri (Hcj), kusunga kulumikizidwa kwa madambwe pamaso pa maginito apamwamba akunja.
Kukhazikika kumatha kufotokozedwa ngati kubwerezabwereza maginito azinthu pansi pamikhalidwe yodziwika pa moyo wa maginito.Zinthu zomwe zimakhudza kukhazikika kwa maginito ndi monga nthawi, kutentha, kusintha kwa kusafuna, maginito olakwika, ma radiation, mantha, nkhawa, ndi kugwedezeka.
Nthawi imakhala ndi zotsatira zochepa pa maginito amakono okhazikika, omwe kafukufuku wasonyeza kusintha mwamsanga pambuyo pa maginito.Zosintha izi, zomwe zimadziwika kuti "magnetic creep," zimachitika pomwe madera osakhazikika a maginito amakhudzidwa ndi kusinthasintha kwamphamvu kwamafuta kapena maginito, ngakhale m'malo osakhazikika.Kusintha kumeneku kumachepa pamene chiwerengero cha zigawo zosakhazikika chikuchepa.
Maginito osowa padziko lapansi sangakumane ndi izi chifukwa chokakamiza kwambiri.Kafukufuku woyerekeza wa nthawi yayitali motsutsana ndi maginito flux akuwonetsa kuti maginito okhazikika okhazikika amataya kachulukidwe kakang'ono ka maginito pakapita nthawi.Kwa maola opitilira 100,000, kutayika kwa zinthu za samarium cobalt kwenikweni ndi ziro, pomwe kutayika kwa zinthu zochepa za Alnico ndizosakwana 3%.
Zotsatira za kutentha zimagwera m'magulu atatu: zowonongeka zomwe zingatheke, zosasinthika koma zowonongeka, ndi zosabweza zomwe sizingabwezedwe.
Zotayika Zosinthika: Izi ndi zotayika zomwe zimabwereranso maginito ikabwerera kutentha kwake koyambirira, kukhazikika kwa maginito kosatha sikungachotse zotayika zomwe zingasinthidwe.Kutayika kosinthika kumafotokozedwa ndi kutentha kwapakati (Tc), monga momwe tawonetsera patebulo ili pansipa.Tc imasonyezedwa ngati peresenti pa digiri Celsius, manambalawa amasiyana ndi kalasi yeniyeni ya chinthu chilichonse, koma amaimira gulu lazinthu zonse.Izi ndichifukwa choti kutentha kwa Br ndi Hcj ndi kosiyana kwambiri, kotero kuti curve demagnetization idzakhala ndi "inflection point" pa kutentha kwakukulu.
Zotayika zosasinthika koma zobwezeredwa: Zotayika izi zimatanthauzidwa ngati kuchepa kwapang'ono kwa maginito chifukwa cha kutentha kwambiri kapena kutsika, zotayika izi zitha kubwezeretsedwanso ndi maginito, maginito sangathe kuchira pomwe kutentha kumabwerera kumtengo wake woyambirira.Kutayika kumeneku kumachitika pamene malo ogwiritsira ntchito maginito ali pansi pa malo opindika a demagnetization curve.Kapangidwe kogwira ntchito ka maginito kokhazikika kamayenera kukhala ndi maginito ozungulira momwe maginito amagwirira ntchito mopitilira muyeso kuposa malo opindika a demagnetization curve pa kutentha komwe kumayembekezeredwa, zomwe zingalepheretse kusintha kwa magwiridwe antchito pa kutentha kwakukulu.
Kutayika Kosasinthika Kosasinthika: Maginito omwe amawonekera ku kutentha kwambiri amasinthidwa ndizitsulo zomwe sizingabwezedwe ndi remagnetization.Gome lotsatirali likuwonetsa kutentha kwakukulu kwa zipangizo zosiyanasiyana, kumene: Tcurie ndi kutentha kwa Curie komwe nthawi yofunikira ya maginito imakhala yosasinthika ndipo zinthuzo zimakhala ndi demagnetized;Tmax ndiye kutentha kwapamwamba kwambiri kwazinthu zoyambira m'gulu lambiri.
Maginito amapangidwa kuti kutentha kukhazikike pochotsa maginito pang'ono powaika ku kutentha kwakukulu molamulidwa.Kutsika pang'ono kwa kachulukidwe ka maginito kumapangitsa kukhazikika kwa maginito, chifukwa madera omwe amangoyang'ana pang'ono ndi omwe amayamba kutaya mawonekedwe awo.Maginito okhazikika oterowo amawonetsa kusinthasintha kwa maginito kosalekeza akakumana ndi kutentha kofanana kapena kutsika.Kuphatikiza apo, gulu lokhazikika la maginito liwonetsa kusinthasintha kwapang'onopang'ono poyerekeza wina ndi mzake, popeza pamwamba pa belu lopindika lomwe lili ndi mawonekedwe osinthika amakhala pafupi ndi kuchuluka kwa batch.
Nthawi yotumiza: Jul-07-2022