Bafuputsi ba NTNU ba khantša leseli holim'a lisebelisoa tsa makenete ka likala tse nyane ka ho etsa lifilimi ka thuso ea li-X-ray tse khanyang haholo.
埃里克•Folven motsamaisi——“莫霍面氧化sehlopha saelectronics Lefapheng la NTNU la Electronic Systems, le basebetsi-'moho le NTNU le Ghent University e Belgium ba ile ba ikemisetsa ho bona kamoo li-micromagnets tse tšesaane li fetohang kateng ha li sitisoa ke matla a khoheli a ka ntle.Mosebetsi, o tšehelitsoeng ka chelete e itseng ke NTNU Nano le Lekhotla la Lipatlisiso la Norway, o hatisitsoe koranteng ea Physical Review Research.
Limanete tse nyane
Einar Standal Digernes o ile a qapa limakenete tse nyane tse lisekoere tse sebelisitsoeng litekong.
Limanete tse nyane tse sekoere, tse entsoeng ke NTNU Ph.D.mokhethoa Einar Standal Digernes, li bophara ba li-micrometer tse peli feela 'me li arotsoe ka likarolo tse' nè tse khutlo-tharo, 'me e 'ngoe le e 'ngoe e na le chebahalo e fapaneng ea makenete e supang tšupa- oache kapa khahlano le oache ho potoloha limakete.
Linthong tse itseng tsa makenete, lihlopha tse nyenyane tsa liathomo li kopana ho ea libakeng tse bitsoang libaka, moo lielektrone li nang le chebahalo e tšoanang ea makenete.
Limaketeng tsa NTNU, libaka tsena li kopana sebakeng se bohareng-bohareng ba vortex-moo nako ea makenete e supang ka kotloloho kapa ho tsoa sefofaneng sa thepa.
Folven o re: "Ha re sebelisa matla a khoheli, libaka tsena tse ngata li tla supa nqa e le 'ngoe."Li ka hola 'me li ka honyela, ebe li kopana."
Lielektrone li batla li le ka lebelo la khanya
Ho bona sena se etsahala ha ho bonolo.Bafuputsi ba ile ba isa li-micromagnets tsa bona ho synchrotron e bophara ba 80m, e tsejoang e le BESSY II, Berlin, moo lielektrone li potlakisang ho fihlela li tsamaea ka lebelo le batlang le lekana.Joale lielektrone tseo tse tsamaeang ka potlako li ntša mahlaseli a X-ray a khanyang haholo.
Folven o re: “Re nka li-X-ray tsena ebe re li sebelisa e le leseli le ka har’a microscope ea rōna.
Hobane lielektrone li potoloha synchrotron ka dingata tse arohaneng ke li-nanoseconds tse peli, mahlaseli a X-ray ao li a ntšang a tla ka molumo o nepahetseng.
Semaekerosekoupo ea phetisetso ea X-ray, kapa STXM, e nka li-X-ray tseo ho etsa setšoantšo sa sebopeho sa matla a khoheli.Ka ho kopanya linepe tsena hammoho, bafuputsi ba ka etsa baesekopo e bonts'ang hore na micromagnet e fetoha joang ha nako e ntse e feta.
Ka thuso ea STXM, Folven le basebetsi-'moho le eena ba ile ba sitisa li-micromagnets tsa bona ka pulse ea hona joale e hlahisang matla a khoheli, 'me ba bona libaka li fetola sebopeho le motheo oa vortex ho tloha bohareng.
O re: “U na le makenete e nyenyane haholo, ebe ua e tsokotsa ebe u leka ho e tšoantša ha e ntse e kokobela hape.Ka mor’a moo, ba ile ba bona khubu e khutlela bohareng—empa e le tseleng e matsoelintsoeke, eseng mola o otlolohileng.
Folven o re: "E tla tantša hape bohareng.
Ho thella ho le leng mme ho felile
Ke hobane ba ithuta lisebelisoa tsa epitaxial, tse entsoeng ka holim'a substrate e lumellang bafuputsi ho fetola thepa ea thepa, empa e ka thibela X-rays ho STXM.
Ho sebetsa ho NTNU NanoLab, bafuputsi ba ile ba rarolla bothata ba substrate ka ho pata micromagnet ea bona ka tlas'a lera la carbon ho sireletsa thepa ea eona ea makenete.
Joale ba ile ba qhekella ka hloko le ka nepo substrate e ka tlas'a eona ka lekhama le tsepamisitsoeng la li-ion tsa gallium ho fihlela ho sala lera le lesesaane haholo.Mosebetsi o boima o ne o ka nka lihora tse robeli sampuli ka 'ngoe—'me ho thella ha 'ngoe ho ka bolela tlokotsi.
O re: "Ntho ea bohlokoa ke hore, haeba u bolaea matla a makenete, re ke ke ra tseba seo pele re lula Berlin."Ehlile, leqheka ke ho tlisa sampole e fetang e le 'ngoe."
Ho tloha ho fisiks ea mantlha ho isa ho lisebelisoa tse tlang
Ka lehlohonolo e sebelitse, 'me sehlopha se sebelisitse lisampole tsa bona tse lokiselitsoeng ka hloko ho rala hore na libaka tsa micromagnet li hola joang le ho honyela ha nako e ntse e ea.Ba boetse ba etsa lipapiso tsa komporo ho utloisisa hamolemo hore na matla a teng a sebetsa.
Hape hammoho le ho ntšetsa pele tsebo ea rona ea fisiks ea motheo, ho utloisisa hore na makenete e sebetsa joang maemong ana a bolelele le a nako e ka ba molemo ho theheng lisebelisoa tsa nako e tlang.
Magnetism e se e sebelisoa bakeng sa polokelo ea data, empa bafuputsi hajoale ba ntse ba batla litsela tsa ho e sebelisa hampe ho ea pele.Maemo a makenete a mantlha a vortex le libaka tsa micromagnet, mohlala, a ka sebelisoa ho kenyelletsa tlhahisoleseling ka mokhoa oa 0s le 1s.
Hona joale bafuputsi ba ikemiselitse ho pheta mosebetsi ona ka lisebelisoa tsa anti-ferromagnetic, moo phello ea nako ea matla a motho ka mong e hlakolang.Tsena lia tšepisa ha ho tluoa tabeng ea k'homphieutha-ka khopolo, lisebelisoa tsa anti-ferromagnetic li ka sebelisoa ho etsa lisebelisoa tse hlokang matla a fokolang 'me li lule li tsitsitse le ha matla a lahlehile-empa ho thata haholo ho batlisisa hobane lipontšo tseo ba li hlahisang li tla fokola haholo. .
Ho sa tsotellehe phephetso eo, Folven o na le tšepo.O re: "Re akarelitse ntlha ea pele ka ho bontša hore re ka etsa lisampole le ho li sheba ka X-rays," o re."Mohato o latelang e tla ba ho bona hore na re ka etsa lisampole tsa boleng bo holimo bo lekaneng ho fumana lets'oao le lekaneng ho tsoa ho thepa e khahlanong le ferromagnetic."
Nako ea poso: May-10-2021