晶體場理論與稀磁半導(dǎo)體光譜性質(zhì)研究.pdf

1、江西師范大學(xué)碩士學(xué)位論文晶體場理論與稀磁半導(dǎo)體光譜性質(zhì)研究姓名：歐陽楚英申請學(xué)位級(jí)別：碩士專業(yè)：理論物理指導(dǎo)教師：雷敏生2000.5.1晶體場理論與稀磁半導(dǎo)體光譜性質(zhì)研究AbstractDilutedmagneticsemiconductors(DMS)，whichisalsocalledsemimagneticsemiconductors(SMSC)，isanewtypeofsemiconductorsItattractedmanyp

2、hysicistsandmaterialscientistsattentionbecauseofitsremarkableapplicationsontheluminouscellsInordertostudyDMStheoreticallyphysicistshavedevelopedthecrystalfieldtheoryinthe】960sWithitsdeveloping，therehavemoreandmorewideran

3、geapplicationsinmanyfieldssuchasPhysics，ChemislryLaserMineralSpectroscopyBiophysicsandSOonButthereexistsafatalprobleminusingthistheorythatis，howtoconstructproperwavefunctionsRecenflNZhaninguanghaveconceivedaseriesofdoubl

4、eSTOtype3delectron’Sradialwavefunctionsbyapplyingtheselfconsistentfieldmethod，andhaveconsideredthecovalencyeffectsonthewavefunctionsLaterbystudyingthespectralparametersofthefirsttransitionalmetalfreeions，MeiFeiprovidedas

5、eriesoftheoptiIIlal3delectron’sradialwavefunctions，SOthatthetheoreticalresultscoincidewiththeexperimentonthespectraoftheDMSOnthebasisofMei’SworkthispaperhasdealtWi恤theinfluencesonthesefunctionsaffectedbythecovalencyeffec

6、tandnephelauxeticeffectseparatelydistinguishedtheseeffectsandproposedfirstlyanephelauxeticeffectmodifyingfactor芷tomodifyMei’SfunctionsByusingthemodified3delectron’Sradialwavefunctions，thespectrapropegiesofMnF2，A1203：Cr“，

7、andZnhCo、ScrystalshavebeeninvestigatedTheresultsshowedthat：(1)Asthehi曲pressureproblemsareconcemed，itismuchmoreeffectiveandconvenienttobesettledbyusingtheNephelauxeticeffectmodilyingfactor盯tomodifythewavefunctions(2)Whens

8、tudyingthespectrapropertiesofdilutedmagneticsemiconductors(DMS)AhM。B，ifxissmallenough(zsO01)，itismucheasierandmoreeffectivebyapplyingthecrystalfieldtheoryandthusprovidedafeasiblemethodtodealwiththesekindsofproblemsKeywor