Ukusukela okoi-crucibleisetyenziswa njengesikhongozeli kwaye kukho i-convection ngaphakathi, njengoko ubungakanani bekristale eveliswayo enye isanda, ukuhanjiswa kobushushu kunye nokufana kweqondo lobushushu kuba nzima ukulawula. Ngokongeza intsimi yamagnetic ukwenza i-convection yokunyibilika isebenze kumandla e-Lorentz, i-convection inokucothwa okanye isuswe ukuvelisa i-silicon eyodwa yekristale ekumgangatho ophezulu.
Ngokohlobo lwamandla kazibuthe, inokwahlulwa ibe yintsimi yemagnethi ethe tye, intsimi yemagnethi ethe nkqo kunye nentsimi yemagnethi ye-CUSP:
Intsimi yamagnetic ethe nkqo ayikwazi ukuphelisa i-convection ephambili ngenxa yezizathu zesakhiwo kwaye ayifane isetyenziswe.
Isalathiso secandelo lemagnethi yomhlaba wemagnethi ethe tyaba i-perpendicular kwi-convection yobushushu ephambili kunye nokunyanzeliswa kwenxalenye yodonga lwe-crucible, enokuthintela ngokufanelekileyo intshukumo, igcine imtyaba yojongano lokukhula, kunye nokunciphisa imigca yokukhula.
Umhlaba wemagnethi we-CUSP unokuhamba okufanayo kunye nokudluliselwa kobushushu benyibilika ngenxa yokulingana kwayo, ngoko ke uphando kwimihlaba ethe nkqo neyemagnethi yeCUSP ibihamba kunye.
E-China, iYunivesithi ye-Xi'an yeTekhnoloji iye yaqaphela imveliso kunye nekristali yokutsala imifuniselo ye-silicon enye crystals usebenzisa imimandla magnetic ngaphambili. Iimveliso zayo eziphambili ziyi-6-8in iintlobo ezidumileyo, ezijoliswe kwimarike ye-silicon wafer yeeseli ze-solar photovoltaic. Kwamazwe angaphandle, afana ne-KAYEX e-United States kunye ne-CGS eJamani, iimveliso zabo eziphambili ziyi-8-16in, ezifanelekileyo kwiintonga ze-crystal crystal eyodwa kwinqanaba le-ultra-large-scale-scale integrated circuits and semiconductors. Bane-monopoly kwintsimi yemagnetic fields ekukhuleni kweekristale ezinomgangatho ophezulu we-diameter ephezulu kwaye ngabona bamele kakhulu.
Ukusasazwa kwemagnethi kwindawo enqamlezileyo yenkqubo yokukhula kwekristale yeyona nto ibaluleke kakhulu kwimagnethi, kubandakanya amandla kunye nokufana kwemagnethi kumda we-crucible, kumbindi we-crucible, kunye nokufanelekileyo. umgama ongaphantsi komphezulu wolwelo. Ububanzi obunqamlezileyo obunqamlezileyo buphelele, imigca yemagnethi yamandla ikwi-perpendicular kwi-axis yokukhula kwekristale. Ngokutsho kwempembelelo yamagnetic kunye nomthetho we-Ampere, i-coil isondele kumda we-crucible kwaye amandla entsimi ngowona mkhulu. Njengoko umgama ukhula, ukuchasana kwemagneti yomoya kuyanda, amandla entsimi ayancipha ngokuthe ngcembe, kwaye yeyona incinci embindini.
Indima ye-superconducting field magnetic
Ukuthintela i-thermal convection: Ukungabikho kwentsimi yamagnetic yangaphandle, i-silicon etyhidiweyo iya kuvelisa i-convection yendalo ngexesha lokufudumala, nto leyo enokukhokelela ekwabiweni okungafaniyo kokungcola kunye nokwakhiwa kweziphene ze-crystal. Intsimi yangaphandle yamagnetic inokucinezela le convection, yenza ukuhanjiswa kweqondo lokushisa ngaphakathi kwe-melted ibe yinto efanayo kunye nokunciphisa ukusabalalisa okungafaniyo kokungcola.
Ukulawula izinga lokukhula kwekristale: Intsimi yamagnetic inokuchaphazela izinga kunye nolwalathiso lokukhula kwekristale. Ngokulawula ngokuchanekileyo amandla kunye nokusabalalisa intsimi yamagnetic, inkqubo yokukhula kwe-crystal inokulungiswa kwaye ukunyaniseka kunye nokufana kwe-crystal kunokuphuculwa. Ngexesha lokukhula kwe-silicon enye ye-crystal, i-oksijini ingena kwi-silicon inyibilika ngokukodwa ngokunyuka kwentshukumo yokunyibilika kunye ne-crucible. Umhlaba wamagnetic unciphisa ithuba le-oksijini yokuqhagamshelana ne-silicon enyibilikayo ngokunciphisa ukuhanjiswa kokunyibilika, ngaloo ndlela kuncitshiswe ukunyibilika kweoksijini. Kwezinye iimeko, i-magnetic field yangaphandle inokutshintsha iimeko ze-thermodynamic zokunyibilika, njengokutshintsha ukunyanzeliswa komphezulu wokunyibilika, okunokunceda ukuguqulwa kwe-oksijini, ngaloo ndlela kuncitshiswe umxholo we-oksijini ekunyibilikeni.
Ukunciphisa ukuchithwa kwe-oksijeni kunye nezinye izinto ezingcolileyo: I-oksijeni enye yezinto ezingcolileyo eziqhelekileyo ekukhuleni kweekristali ze-silicon, eziza kubangela ukuba umgangatho we-crystal uhlambuluke. Intsimi yamagnetic inokunciphisa umxholo we-oksijini kwi-melt, ngaloo ndlela inciphisa ukuchithwa kwe-oksijini kwi-crystal kunye nokuphucula ukucoceka kwe-crystal.
Ukuphucula isakhiwo sangaphakathi se-crystal: Intsimi yamagnetic inokuchaphazela isakhiwo se-defect ngaphakathi kwe-crystal, njengokuchithwa kunye nemida yeenkozo. Ngokunciphisa inani lezi ziphene kunye nokuchaphazela ukuhanjiswa kwazo, umgangatho opheleleyo we-crystal unokuphuculwa.
Ukuphucula iipropathi zombane zeekristale: Kuba amasimi amagnetic anefuthe elibalulekileyo kwi-microstructure ngexesha lokukhula kwekristale, anokuphucula iipropathi zombane zeekristale, ezinje ngokumelana kunye nobomi bomthwali, ezibaluleke kakhulu ekwenzeni izixhobo ze-semiconductor ezisebenza kakhulu.
Wamkelekile nabaphi na abathengi abavela kwihlabathi liphela ukuba basindwendwele kwingxoxo eyongezelelekileyo!
https://www.semi-cera.com/
https://www.semi-cera.com/tac-coating-monocrystal-growth-parts/
https://www.semi-cera.com/cvd-coating/
Ixesha lokuposa: Jul-24-2024