Ua noiʻi a hoʻopaʻa ʻia kahi hui o nā mea noiʻi mai ka Paul Scherrer Institute (Villigen, Switzerland) a me ETH Zurich i ka hana o kahi hanana hoihoi o ka magnetism ma ka pae atomic. ʻO ke ʻano atypical o nā magnet ma ke kiʻekiʻe o nā pūʻulu nanometer i wānana ʻia 60 mau makahiki i hala e ka Soviet a me ʻAmelika physicist Igor Ekhielevich Dzyaloshinsky. Ua hiki i nā mea noiʻi ma Switzerland ke hana i nā ʻano like ʻole a ke wānana nei i ka wā e hiki mai ana no lākou, ʻaʻole wale ma ke ʻano he mālama mālama, akā, he mea maʻamau hoʻi, ma ke ʻano he pani no nā transistors i nā mea hana me nā mea nanoscale.
I ko kākou honua, kuhikuhi mau ka nila panana i ka ʻākau, i hiki ai ke ʻike i ke ala i ka hikina a me ke komohana. Hoʻohuli ʻia nā magnet polarity kū'ē a hoʻihoʻi nā magnet unipolar. I loko o ka microcosm o ka pālākiō o kekahi mau mana, ma lalo o kekahi mau kūlana, ʻokoʻa nā kaʻina hana magnetic. I ka hihia o ka pilina pōkole o nā ʻātoma kobalt, no ka laʻana, ʻo nā ʻāpana pili o ka magnetization kokoke i nā ʻātoma akau e kuhikuhi ana i ke komohana. Inā hoʻololi ka orientation i ka hema, a laila e hoʻololi nā ʻātoma i ka ʻāina e pili ana i ka orientation o ka magnetization i ka hikina. ʻO ka mea nui, aia nā mana mana a me nā ʻātoma kauā ma ka mokulele hoʻokahi. Ma mua, ua ʻike ʻia ka hopena like i nā hale atomic i hoʻonohonoho ʻia (hoʻokahi ma luna o kekahi). ʻO ka wahi o ka mana a me nā wahi i hoʻopaʻa ʻia ma ka mokulele hoʻokahi e wehe i ke ala i ka hoʻolālā ʻana o ka hoʻolālā ʻikepili a me ka mālama ʻana.
Hiki ke hoʻololi ʻia ke kuhikuhi o ka magnetization o ka papa mana e kahi kahua electromagnetic a me ka manawa. Ke hoʻohana nei i nā loina like, mālama ʻia nā transistors. Aia wale nō i ka hihia o nā nanomagnets hiki i ka hale kiʻi ke hoʻoikaika i ka hoʻomohala ʻana ma ke ʻano o ka huahana, a ma ke ʻano o ka mālama ʻana i ka hoʻohana ʻana a me ka hōʻemi ʻana i ka wahi o nā hoʻonā (e hōʻemi i ka nui o ke kaʻina hana ʻenehana). I kēia hihia, ʻo nā ʻāpana magnetization hui ʻia, i hoʻomalu ʻia e ka hoʻololi ʻana i ka magnetization o nā ʻāpana nui, e hana ma ke ʻano he puka.
Ua hōʻike ʻia ke ʻano o ka magnetization hui ʻia i ka hoʻolālā kūikawā o ka array. No ka hana ʻana i kēia, ua hoʻopuni ʻia kahi ʻāpana cobalt 1,6 nm mānoanoa ma luna a ma lalo e nā substrates: platinum ma lalo, a me ka alumini oxide ma luna (ʻaʻole i hōʻike ʻia ma ke kiʻi). Me ka ʻole o kēia, ʻaʻole i hiki mai ka magnetization pili komohana komohana a me ka hikina hema. Eia kekahi, hiki i ka mea i ʻike ʻia ke alakaʻi i ka puka ʻana o nā antiferromagnets synthetic, hiki ke wehe i ke ala i nā ʻenehana hou no ka hoʻopaʻa ʻana i ka ʻikepili.
Source: 3dnews.ru