ʻO nā ʻokoʻa nui ma waena o nā waiwai kino o nā kaapuni magnetic a me nā kaapuni uila penei:
(1) Loaʻa nā mea conductive maikaʻi ma ke ʻano, a aia kekahi mau mea e hoʻokaʻawale i ke au. No ka laʻana, ʻo ka resistivity o ke keleawe he 1.69 × 10-2Qmm2 / m, ʻoiai ʻo ka resistivity o ka lāʻau ma kahi o 10 mau manawa kiʻekiʻe. Akā a hiki i kēia manawa, ʻaʻohe mea i hoʻopaʻa ʻia i ka flux magnetic i loaʻa. ʻO ka hikiwawe o ka bismuth, nona ka liʻiliʻi liʻiliʻi loa, ʻo ia ka 0. 99982μ. He 1. 000038μ ka manekini permeability o ka ea. No laila hiki ke ʻike ʻia ka ea ma ke ʻano he mea me ka haʻahaʻa haʻahaʻa. ʻO ka pili pili o nā mea ferromagnetic me ka permeability maikaʻi loa e pili ana i ke ono o ka mana o 10.
(2) ʻO kēia ke kahe ʻana o nā nui i hoʻopaʻa ʻia i loko o kahi mea hoʻokele. Ma muli o ka noho ʻana o ke kūpaʻa conductor, hana ka mana electrodynamic i ka nui i hoʻopaʻa ʻia a hoʻopau i ka ikehu, a ua hoʻololi ʻia ka nalowale o ka mana i ka wela. ʻAʻole hōʻike ka flux magnetic i ka neʻe o kekahi nuipa, ʻaʻole ia e hōʻike i ka nalowale o ka mana, no laila he hoʻopunipuni kēia hoʻohālikelike. Me he mea la he kaawale ka kaapuni a me ke kaapuni magnetic, a ua loaa i kela mea keia mea kona mau mea pono ole e honi ana i ka manao iloko o ka puolo. He oopa keia hoohalike no ka lilo o ka mana. He ʻokoʻa ke kaapuni a me ke kaapuni magnetic, a loaʻa i kēlā me kēia me kona ʻano kino ponoʻī ʻole.
ʻOi aku ka māmā o ka pōʻai magnetic:
(1) ʻAʻohe haʻihaʻi o ke kaapuni magnetic e like me ke kaapuni; ʻO ka puʻupuʻu magnetic he mau wahi a pau.
(3) ʻaneʻane ʻaneʻane laina ʻole nā kaapuni mākēneki. ʻO ka mea magnetoresistance ferromagnetic he nonlinear, he laina laina ka ea gap magnetoresistance. ʻO ke kānāwai ohm a me ke kanikau ʻole o ke kaapuni magnetic i helu ʻia ma luna nei pololei wale nō ma ka laina laina. No laila, ʻo ka hoʻolālā maoli, e hoʻohana maʻamau i ka pihi BH e ʻimi i ka wahi hana.
(2) No ka loaʻa ʻole o kahi mea pono ʻole, ʻaʻole i kāohi ʻia ka flux magnetic, ʻo kahi hapa wale nō o ka flux e hele ma ke kaʻapuni magnetic i kuhikuhi ʻia, a ʻo ke koena i hoʻopuehu ʻia i loko o ke ākea a puni ke kaapuni, i kapa ʻia ʻo leakage, a paʻakikī ka helu pololei a me ke ana ʻana o kēia leakage, akā ʻaʻole hiki ke mālama ʻia.
Ka manawa hoʻouna: Mar-17-2022