Ndị na-eme nchọpụta sitere na NTNU na-amụnye ọkụ na ihe ndọta na obere akpịrịkpa site n'ịmepụta ihe nkiri site n'enyemaka nke ụfọdụ ụzarị ọkụ na-egbuke egbuke.
Erik Folven, onye isi otu ndị otu oxide electronics na NTNU's Department of Electronic Systems, na ndị ọrụ ibe si NTNU na Ghent University dị na Belgium wepụtara ịhụ ka micromagnets dị mkpa na-agbanwe mgbe oghere magnetik na-enye nsogbu.E bipụtara ọrụ ahụ, nke NTNU Nano na Òtù Na-ahụ Maka Nnyocha nke Norway kwadoro n'akụkụ ya, n'akwụkwọ akụkọ nyocha nyocha anụ ahụ.
Obere ndọta
Einar Standal Digernes chepụtara ntakịrị ihe ndọta square ejiri mee nnwale ahụ.
Obere ndọta square, nke NTNU Ph.D mere.Onye ndoro-ndoro ochichi Einar Standal Digernes, bụ naanị micrometer abụọ n'obosara wee kewaa n'ime ngalaba triangular anọ, nke ọ bụla nwere ntụgharị magnetik dị iche iche na-atụ aka n'aka elekere ma ọ bụ na-emegide elekere gburugburu magnets.
N'ụfọdụ ihe ndọta, obere otu atọm na-ejikọta ọnụ na mpaghara a na-akpọ ngalaba, nke elektrọn niile nwere otu ntụgharị magnetik.
N'ime ihe ndọta NTNU, ngalaba ndị a na-ezute n'ebe etiti - isi vortex - ebe oge ndọta na-atụ aka ozugbo n'ime ma ọ bụ pụọ na ụgbọ elu nke ihe ahụ.
Folven na-ekwu, "Mgbe anyị na-etinye oghere magnetik, ọtụtụ ngalaba ndị a ga-atụ aka n'otu ụzọ ahụ.""Ha nwere ike itolite ma ha nwere ike ịdalata, mgbe ahụ ha nwere ike jikọta n'ime ibe ha."
Electrons fọrọ nke nta ka ọ na-agba ọsọ nke ìhè
Ịhụ nke a na-eme adịghị mfe.Ndị nchọpụta ahụ weghaara micromagnets ha gaa synchrotron nke nwere ụdị donut dị mita 80, nke a maara dị ka BESSY II, na Berlin, bụ ebe electrons na-eme ngwa ngwa ruo mgbe ha na-eme njem na ihe fọrọ nke nta ka ọ bụrụ ọsọ ọkụ.Eletrọn ndị ahụ na-agba ọsọ na-ebunye X-ray na-egbuke egbuke.
Folven na-ekwu, sị: “Anyị na-ewere x-ray ndị a ma jiri ya mee ihe dị ka ìhè dị na microscope anyị.
N'ihi na electrons na-eme njem gburugburu synchrotron na ụyọkọ nke nanoseconds abụọ kewapụrụ, ụzarị X-ray ha na-ebupụ na-abịa n'ụkpụrụ ọkụ.
Mikroskopu X-ray na-enyocha, ma ọ bụ STXM, na-ewe ụzarị X-ray ndị ahụ iji mepụta nseta ihuenyo nke ihe ndọta.Site n'ịkọkọta foto ndị a ọnụ, ndị nchọpụta nwere ike ịmepụta ihe nkiri na-egosi ka micromagnet si agbanwe ka oge na-aga.
Site n'enyemaka nke STXM, Folven na ndị ọrụ ibe ya na-akpaghasị micromagnets ha na ụda nke ugbu a nke na-emepụta oghere magnetik, ma hụ na ngalaba na-agbanwe ọdịdị na vortex isi na-esi n'etiti.
O kwuru, sị: "Ị nwere nnukwu magnetik, mgbe ahụ, ị ga-apị ya ma gbalịa ịhụ ya ka ọ na-edozi ọzọ."Mgbe nke ahụ gasịrị, ha hụrụ na isi na-alaghachi n'etiti-ma n'okporo ụzọ na-efegharị efegharị, ọ bụghị ahịrị kwụ ọtọ.
Folven na-ekwu, "Ọ ga-abụ ụdị ịgba egwu azụ n'etiti.
Otu nzacha ma ọ gafeela
Nke ahụ bụ n'ihi na ha na-amụ ihe epitaxial, nke a na-emepụta n'elu mkpụrụ nke na-enye ohere ka ndị nchọpụta tweak njirimara nke ihe ahụ, ma ọ ga-egbochi X-ray na STXM.
Na-arụ ọrụ na NTNU NanoLab, ndị nyocha ahụ doziri nsogbu mkpụrụ osisi site na ichi micromagnet ha n'okpuru oyi akwa carbon iji chebe ihe ndọta ya.
Mgbe ahụ, ha jiri nlezianya na kpomkwem gbukasịa mkpụrụ osisi dị n'okpuru site na iji obere ion gallium lekwasịrị anya ruo mgbe naanị obere oyi akwa dị.Usoro nhụsianya ahụ nwere ike were awa asatọ n'otu nlele - na otu ntọhapụ nwere ike ịkọwa ọdachi.
"Ihe dị mkpa bụ na ọ bụrụ na ị na-egbu magnetism, anyị agaghị ama na tupu anyị anọdụ ala na Berlin," ka ọ na-ekwu."Ihe aghụghọ a bụ, n'ezie, iweta ihe karịrị otu nlele."
Site na isi physics gaa na ngwaọrụ n'ọdịnihu
Obi dị m ụtọ na ọ rụrụ ọrụ, ndị otu ahụ wee jiri ihe nlele ha ejiri nlezianya kwadoo wee depụta ka ngalaba micromagnet si eto ma na-ebelata ka oge na-aga.Ha mekwara ihe ngosi kọmputa ka ha ghọta nke ọma ihe ike na-arụ ọrụ.
Na mgbakwunye na ịkwalite ihe ọmụma anyị gbasara physics bụ isi, ịghọta ka magnetism si arụ ọrụ n'ogologo na oge oge ndị a nwere ike inye aka n'ịmepụta ngwaọrụ n'ọdịnihu.
A na-eji Magnetism eme ihe maka nchekwa data, mana ndị nchọpụta na-achọ ugbu a ụzọ ha ga-esi na-erigbu ya n'ihu.Usoro ndọta nke isi vortex na ngalaba nke micromagnet, dịka ọmụmaatụ, enwere ike iji tinye ozi n'ụdị 0s na 1s.
Ndị nyocha ahụ na-achọ ugbu a iji ihe mgbochi ferromagnetic megharịa ọrụ a, ebe mmetụta net nke oge ndọta n'otu n'otu na-akagbu.Ndị a na-ekwe nkwa ma a bịa n'ịgbakọ - na tiori, a pụrụ iji ihe mgbochi ferromagnetic mee ngwaọrụ ndị na-achọ obere ume ma nọgide na-eguzosi ike ọbụna mgbe ike na-efunahụ-ma ọ dị ukwuu iji nyochaa n'ihi na akara ngosi ha na-emepụta ga-esiwanye ike karị. .
N'agbanyeghị ihe ịma aka ahụ, Folven nwere nchekwube.Ọ sịrị, "Anyị ekpuchila ala mbụ site n'igosi na anyị nwere ike ịme ihe nlele ma jiri X-ray lelee ha.""Nzọụkwụ na-esote ga-abụ ịhụ ma anyị nwere ike ịme ihe nlele zuru oke iji nweta akara zuru oke site na ihe mgbochi ferromagnetic."
Oge nzipu: Mee-10-2021