Ua ʻike ka poʻe noiʻi i kahi ʻano hou ʻē aʻe i ka wā i wela ai kahi mea magnetic.Ke piʻi aʻe ka mahana, "hoʻokuʻu" ka wili magnetic o kēia mea i loko o ke ʻano static, e hana maʻamau ke hāʻule ka mahana.Ua hoʻopuka nā mea noiʻi i kā lākou mau ʻike ma ka puke pai Nature Physics.
Ua ʻike nā mea noiʻi i kēia ʻano ma nā mea neodymium.I kekahi mau makahiki i hala aku nei, ua wehewehe lākou i kēia mea ʻo "self induced spin glass".ʻO ke aniani wili ka mea maʻamau he mea hao, no ka laʻana, ua hui wale ʻia nā ʻātoma hao i loko o kahi pahu o nā ʻātoma keleawe.ʻO kēlā me kēia ʻātoma hao, ua like ia me kahi magnet liʻiliʻi, a i ʻole wili.Kuhi ʻia kēia mau milo ma nā ʻaoʻao like ʻole.
ʻAʻole like me nā aniani wili kahiko, i hui pū ʻia me nā mea magnetic, ʻo ka neodymium kekahi mea.I ka loaʻa ʻole o kekahi mea ʻē aʻe, hōʻike ia i ke ʻano o ka vitrification ma ke ʻano aniani.Hoʻokumu ka hoʻololi ʻana i ke ʻano o ka hoʻololi ʻana e like me ka spiral, kahi mea maʻamau a loli mau.
I loko o kēia noiʻi hou, ua ʻike nā mea noiʻi i ka wā i hoʻomehana ai lākou i ka neodymium mai -268 ° C a -265 ° C, ʻo kona milo "hoʻohu" i loko o kahi ʻano paʻa, e hana ana i ka magnet ma kahi kiʻekiʻe o ka mahana.Ke maʻalili nei ka mea, hoʻi mai ke ʻano hoʻohālike pilipili.
"ʻAʻole loaʻa kēia ʻano o ka 'freezing' i loko o nā mea magnetic," wahi a Alexander khajetoorians, he loea scanning probe microscope ma Radboud University ma Netherlands.
ʻO nā mahana kiʻekiʻe e hoʻonui i ka ikehu i loko o nā mea paʻa, nā wai, a me nā kinoea.Hoʻohana like ia i nā magnets: i nā mahana kiʻekiʻe, hoʻomaka pinepine ka wili.
Ua ʻōlelo ʻo Khajetoorians, "ʻo ke ʻano magnetic o neodymium a mākou i ʻike ai he kūʻē maoli i ka mea e hana 'maʻamau'.""He mea kū'ē loa kēia, e like me ka huli ʻana o ka wai i hau ke wela."
ʻAʻole maʻamau kēia hanana counterintuitive ma ke ʻano - he liʻiliʻi nā mea i ʻike ʻia e hana hewa.ʻO kekahi laʻana kaulana ʻo ia ka paʻakai Rochelle: ʻo kāna mau uku i hoʻonohonoho ʻia i ke ʻano i kauoha ʻia ma nā wela kiʻekiʻe, akā ua puʻunaue wale ʻia i nā wela haʻahaʻa.
ʻO ka wehewehe ʻana o ke aniani spin ke kumuhana o ka 2021 Nobel Prize in physics.He mea nui ka hoʻomaopopo ʻana i ka hana ʻana o kēia mau aniani wili no nā wahi ʻepekema ʻē aʻe.
Ua ʻōlelo ʻo Khajetoorians, "inā hiki iā mākou ke hoʻohālikelike i ka ʻano o kēia mau mea, hiki iā ia ke hoʻohālikelike i ka ʻano o nā mea he nui."
Pili ka hana eccentric i ka manaʻo o ka degeneracy: nui nā mokuʻāina like ʻole i like ka ikehu, a lilo ka ʻōnaehana i mea hoʻonāukiuki.Hiki i ka mahana ke hoʻololi i kēia kūlana: aia kahi mokuʻāina kikoʻī wale nō, e ʻae ana i ka ʻōnaehana e komo i kahi ʻano.
Hiki ke hoʻohana ʻia kēia ʻano ʻano ʻē i ka mālama ʻikepili hou a i ʻole nā manaʻo helu helu, e like me ka lolo e like me ka helu helu.
Ka manawa hoʻouna: ʻAukake-05-2022
