Abashakashatsi bo muri NTNU barimo kumurika ibikoresho bya magneti ku munzani muto bakora firime babifashijwemo na X-X yaka cyane.
Erik Folven, umuyobozi w’itsinda rya elegitoroniki ya oxyde mu ishami rya NTNU ishami rya elegitoroniki, hamwe na bagenzi be bo muri NTNU na kaminuza ya Ghent mu Bubiligi bahagurukiye kureba uburyo micromagneti ya firime yoroheje ihinduka iyo ihungabanijwe n’umuriro wa rukuruzi.Akazi katewe inkunga igice na NTNU Nano n'Inama ishinzwe Ubushakashatsi muri Noruveje, cyasohotse mu kinyamakuru Physical Review Research.
Utumenyetso duto
Einar Standal Digernes yahimbye uduce duto twa magneti akoreshwa mubushakashatsi.
Agace gato ka magneti, kakozwe na NTNU Ph.D.umukandida Einar Standal Digernes, ni micrometero ebyiri gusa z'ubugari kandi zigabanyijemo ibice bine bya mpandeshatu, buri kimwe gifite icyerekezo cya magneti gitandukanye cyerekana isaha cyangwa irwanya amasaha hafi ya magnesi.
Mubikoresho bimwe bya magneti, amatsinda mato ya atome ahuza hamwe mubice byitwa domaine, aho electron zose zifite icyerekezo kimwe cya magneti.
Muri magnesi ya NTNU, izo domaine zihurira kumwanya wo hagati - intangiriro ya vortex - aho umwanya wa magneti werekeza neza cyangwa hanze yindege yibikoresho.
Folven agira ati: "Iyo dushyizeho imbaraga za rukuruzi, byinshi kandi byinshi muri izo domeni bizerekeza ku cyerekezo kimwe."“Barashobora gukura kandi barashobora kugabanuka, hanyuma barashobora guhurira hamwe.”
Electron hafi yumuvuduko wurumuri
Kubona ibi bibaho ntabwo byoroshye.Abashakashatsi bajyanye micromagneti zabo kuri metero 80 z'ubugari bwa synchrotron ifite ishusho ya donut, izwi ku izina rya BESSY II, i Berlin, aho electron zihuta kugeza igihe zigenda ku muvuduko w'urumuri.Izo electroni zihuta cyane noneho zisohora X-imirasire yaka cyane.
Folven agira ati: "Dufata iyi X-ray tukayikoresha nk'urumuri muri microscope yacu."
Kuberako electron zizenguruka synchrotron mubice bitandukanijwe na nanosekondi ebyiri, X-imirasire basohora biza muburyo bwuzuye.
Ikwirakwizwa rya X-ray microscope, cyangwa STXM, ifata iyo X-X kugirango ikore ishusho yimiterere ya magneti.Mugushushanya hamwe, amashusho abashakashatsi barashobora gukora firime yerekana uburyo micromagnet ihinduka mugihe.
Babifashijwemo na STXM, Folven na bagenzi be bahungabanije micromagneti zabo hamwe numuyoboro wamashanyarazi wabyaye umurima wa rukuruzi, hanyuma babona domaine ihindura imiterere hamwe ninturusu yimuka iva hagati.
Agira ati: “Ufite magneti ntoya cyane, hanyuma urayikubita hanyuma ukagerageza kuyishushanya uko yongeye gutura.”Nyuma, babonye intangiriro isubira hagati - ariko kumuhanda uhindagurika, ntabwo ari umurongo ugororotse.
Folven agira ati: “Bizaba imbyino zisubira mu kigo.
Kunyerera kandi birarangiye
Ibyo biterwa nuko biga ibikoresho bya epitaxial, bikozwe hejuru ya substrate ituma abashakashatsi bahindura imitungo yibikoresho, ariko bagahagarika X-imirasire muri STXM.
Abashakashatsi bakorera muri NTNU NanoLab, bakemuye ikibazo cya substrate bashyingura micromagnet yabo munsi ya karubone kugirango barinde imiterere ya magneti.
Noneho baritonze kandi neza bakuramo substrate munsi hamwe nurumuri rwibanze rwa ion ya gallium kugeza hasigaye gusa urwego ruto cyane.Igikorwa kitoroshye gishobora gufata amasaha umunani kuri sample - kandi kunyerera bishobora kwerekana ibiza.
Agira ati: "Ikintu gikomeye ni uko, niba wishe magnetism, ntituzabimenya mbere yuko twicara i Berlin."“Birumvikana ko amayeri azana icyitegererezo kirenze kimwe.”
Kuva muri fiziki yibanze kugeza kubikoresho bizaza
Twishimye ko cyakoze, kandi itsinda ryakoresheje ingero zabo zateguwe neza kugirango bashushanye uko micromagnet domaine ikura kandi igabanuka mugihe runaka.Bakoze kandi amashusho ya mudasobwa kugirango bumve neza imbaraga zakazi.
Kimwe no guteza imbere ubumenyi bwacu bwa fiziki yibanze, gusobanukirwa uburyo magnetisme ikora kuri ubu burebure nigihe cyigihe bishobora gufasha mukurema ibikoresho bizaza.
Magnetism isanzwe ikoreshwa mububiko bwamakuru, ariko abashakashatsi kuri ubu barimo gushakisha uburyo bwo kuyikoresha neza.Icyerekezo cya magnetiki yibanze ya vortex hamwe na domaine ya micromagnet, kurugero, birashoboka ko byakoreshwa mugushiraho amakuru muburyo bwa 0s na 1s.
Abashakashatsi ubu bafite intego yo gusubiramo iki gikorwa hamwe nibikoresho birwanya ferromagnetic, aho ingaruka za neti ya magnetique imwe ihagarara.Ibi biratanga ikizere kubijyanye na comptabilite - mubitekerezo, ibikoresho birwanya ferromagnetique bishobora gukoreshwa mugukora ibikoresho bisaba ingufu nke kandi bikaguma bihamye nubwo ingufu zabuze - ariko amayeri menshi yo gukora iperereza kuko ibimenyetso batanga bizaba bifite intege nke cyane .
Nubwo hari ikibazo, Folven afite icyizere.Agira ati: "Twatwikiriye ubutaka bwa mbere twerekana ko dushobora gukora ingero kandi tukareba muri X-X".Ati: “Intambwe ikurikiraho ni ukureba niba dushobora gukora ingero z'ubuziranenge buhagije kugira ngo tubone ibimenyetso bihagije bivuye mu bintu birwanya ferromagnetic.”
Igihe cyo kohereza: Gicurasi-10-2021