Vatsvakurudzi vanobva kuNTNU vari kujekesa zvinhu zvemagineti pazvikero zviduku nekugadzira mafirimu nerubatsiro rwemamwe maX-ray akajeka zvikuru.
Erik Folven, mukuru-mukuru weboka reoxide remagetsi paNTNU Dhipatimendi reElectroniki Systems, uye vaanoshanda navo kubva kuNTNU neGhent University kuBelgium vakatanga kuona kuti matete-firimu magineti anochinja sei kana avhiringidzwa nekunze kwemagineti.Basa iri, rakatsigirwa zvishoma neNTNU Nano uye Research Council yeNorway, rakabudiswa mupepanhau Physical Review Research.
Magineti madiki
Einar Standal Digernes akagadzira magineti madiki anoshandiswa mukuyedza.
Magineti madiki-diki, akagadzirwa neNTNU Ph.D.mumiriri Einar Standal Digernes, angori mamicromita maviri paupamhi uye akapatsanurwa kuita mana ane matatu madomasi, imwe neimwe iine magineti einongedzo yakasiyana inonongedza wachi kana kupesana-newachi kutenderedza magineti.
Mune zvimwe zvinhu zvemagineti, zvikwata zvidiki zvemaatomu zvinoungana pamwechete kuita nzvimbo dzinodaidzwa kuti madomasi, umo maerekitironi ese ane kutarisika kwemagineti kwakafanana.
Mumagineti eNTNU, matunhu aya anosangana panzvimbo yepakati-iyo vortex core-apo nguva yemagineti inonongedza mukati kana kunze kwendege yechinhu.
"Patinoisa magineti, kuwanda kwenzvimbo idzi kunongedza kudivi rimwe," anodaro Folven."Vanogona kukura uye vanogona kudzikira, uye vobva vabatana mune imwe neimwe."
Maelectrons anenge ari kumhanya kwechiedza
Kuona izvi zvichiitika hakusi nyore.Vatsvagiri vacho vakatora magineti avo kune 80m-yakafara-yakaita donut-shaped synchrotron, inozivikanwa seBESSY II, muBerlin, uko maerekitironi anokwidziridzwa kusvika ave kufamba nekumhanya kwechiedza.Maerekitironi iwawo anokurumidza kufamba anobva aburitsa maX-ray anopenya zvakanyanya.
“Tinotora maX-ray aya toashandisa sechiedza pamaikorosikopu yedu,” anodaro Folven.
Nekuda kwekuti maerekitironi anofamba achitenderedza synchrotron ari mumapoka akapatsanurwa nemananoseconds maviri, maX-ray aanoburitsa anouya ari mapuruzi chaiwo.
A scanning transmission X-ray microscope, kana STXM, inotora iwo maX-rays kugadzira mufananidzo weiyo magineti chimiro.Nekusona zvidhori izvi pamwechete, vaongorori vanogona chaizvo kugadzira bhaisikopo rinoratidza kuti iyo micromagnet inoshanduka sei nekufamba kwenguva.
Nerubatsiro rweSTXM, Folven nevamwe vake vakavhiringidza mamicromagnets avo nekupuruzira kwazvino kwakagadzira magnetic field, uye vakaona madomasi achichinja chimiro uye vortex core kufamba kubva pakati.
"Une magineti diki, wobva waisimudza woedza kuifananidza sezvainogadzikana zvakare," anodaro.Pashure pacho, vakaona musimboti uchidzokera nepakati—asi nenzira inomonereka, kwete mutsetse wakatwasuka.
"Ichaita sekutamba kudzokera pakati," anodaro Folven.
Imwe inotsvedza uye yapera
Imhaka yekuti vanodzidza epitaxial zvinhu, izvo zvinogadzirwa pamusoro pe substrate inobvumira vaongorori kuti vatore zvimiro zvezvinhu, asi inovhara maX-rays muSTXM.
Kushanda muNTNU NanoLab, vatsvakurudzi vakagadzirisa dambudziko re substrate nekuviga micromagnet yavo pasi peganda rekabhoni kuchengetedza magineti ayo.
Vakabva vanyatsochekerera pasi pasi nedanda rakanangana negallium ion kusvikira pakangosara chitete chakanyanya.Kuita kwacho kunorwadza kunogona kutora maawa masere pamuenzaniso mumwe chete—uye kutsvedza kamwe chete kunogona kureva njodzi.
"Chinhu chakakosha ndechekuti, kana ukauraya magineti, isu hatizive izvozvo tisati tagara muBerlin," anodaro."Hunyengeri, hongu, kuunza anopfuura sampuli imwe."
Kubva kune yakakosha fizikisi kusvika kune ramangwana zvishandiso
Nechemumoyo yakashanda, uye timu yakashandisa sampuli dzazvo dzakanyatsogadzirirwa kuronga kuti madomasi emicromagnet anokura sei uye anoderera nekufamba kwenguva.Vakagadzirawo kuenzanisa kwekombuta kuti vanzwisise zviri nani masimba aive pabasa.
Pamwe nekusimudzira ruzivo rwedu rwefizikisi yakakosha, kunzwisisa kuti magineti inoshanda sei pakureba uye zvikero zvenguva zvinogona kubatsira mukugadzira zvishandiso zveramangwana.
Magnetism yatove kushandiswa kuchengetedza data, asi vaongorori parizvino vari kutsvaga nzira dzekuishandisa zvakare.Iyo magineti yekumisikidza yevortex core uye madomasi emicromagnet, semuenzaniso, anogona kushandiswa kukodha ruzivo muchimiro che0s uye 1s.
Vatsvagiri varikuvavarira kudzokorora basa iri ne-anti-ferromagnetic zvinhu, uko mambure maitiro emunhu magineti nguva anodzima.Izvi zvinovimbisa kana zvasvika pamakomputa - mudzidziso, anti-ferromagnetic zvinhu zvinogona kushandiswa kugadzira michina inoda simba shoma uye irambe yakagadzikana kunyangwe simba rikarasika - asi zvakanyanya trickier kuongorora nekuti masaini avanoburitsa anenge asina kusimba zvakanyanya. .
Pasinei nedambudziko iroro, Folven ane tariro.“Takabata danho rekutanga nekuratidza kuti tinokwanisa kugadzira masamples totarisa mazviri nemaX-rays,” anodaro."Nhanho inotevera ichave yekuona kana tichigona kugadzira sampuli dzemhando yepamusoro zvakakwana kuti tiwane chiratidzo chakakwana kubva kune anti-ferromagnetic zvinhu."
Nguva yekutumira: May-10-2021