co掺杂zno电子能级结构对其磁性的影响

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1、摘要inf0姗ationabouttheillteractionbe铆eencarrieslocalizedattheiIIlpurnyanddelec仃onsof臼独sition-metalions，thou曲ttleneractionplays觚illlport锄troleiIl锄alyzingthefbrromagnetism．1llthepresentpaper，wefirstintI．0ducefield-iIlducedsurfkephotovoItagespectI．oscopy(FISPS)inwhichsurfacephotoVoltagespectlllI

2、ll(SPS)teclmiquetoi11VestigateZnO：Co，a11dputfon)lrardanewmech跚ismtotakeintoaccomltfortlleobservedmagnetismphenomena．Themainresultswerei11ustratedasfollows：1．EcT孤dEgreduCtionwithxinCo-dopedznOaremainlyduetottIeValenceb觚drajsede船CtiVely，锄dtheene哟，oftheacc印tor-t)，peionizationleVelsrelatiVetotl

3、lecondu“onbandedgeisiIld印endentofCocontent．AseriesofCo-dopedZn0powdersareobtainedbythennaldecompositionoftheoxalateprecursorsat400℃，illwhichCoionswereinthe2+f．omaloxidationstates锄dsubstitutedZn．111ebandgapene哟，EgdecreaseswithmeiIlcreasingCoconcentrationx．nech鹕e·仃a11sfer(cT)仃aIlsitionderived

4、肋mC一+isclearlyreVealed劬mthe肌alysisofabsorption缸a，锄dtheabso叩tionthresh01dEcToftheCT咖lsitiondecreaseswiththeincreasingx．nisfoundthattheener

5、野di疏rencesb咖eenEgandECTarealmoSt艄撕ableforallCo．dopedZnO，aboutO．28eV．2．AmongZn1．xCoxOcharact甜zedbyXRD’XPSandabsorptionspec仃aaboVe，ZnOandZno．97Coo．030werei

6、nVestigatedbysurf．acephotoVoltagespectracombinedwiththeelectric-field-modifiedtecIlllique．FISPSwelldistingllishthecha唱e-仃孤sfer缸翻sition疗omband-bandn孤sitionandintemalCoiond7_d7‘n韧sition．锄ddetemiIlatethes锄plesn—typecharacter．TheinteractioniscleanyobseⅣedbetweenthecharge．transfer仃a11sitionrelat

7、edtoC02+intherangeIjrom375nmt0460nm锄dtheeXcitonictransitionrelatedtodefects．111usthepresenceoftheinteractionbe铆eeniI耐nsicdefects锄dC02+isconfimedeXperimentally．Ollr咖diesgiveauIlique锄dnovel印proacht0inVestigatetheinteractionbet、)I，eenintrinsicdef色ctsand仃ansitionV博士论文：co掺杂znO电子能级结构对其磁性的影响metali

8、onsinDMSsascomparedtoothertecllIliques，a11dtodeteminatethematerial’sconduCtiVe帅esimultaneously．Althou曲neitherhysteresisnorrem锄encew雒0bservate也theCu—e-Weiss0w私pos“iVe．It访dicatedtIleferroma差妒eticcoupliIlgbetweenC0ionsmaybepresence，butquiteweakilltllesampIe