Co-Cu多層膜層間耦合作用的調(diào)節(jié).pdf

1、首都師范大學碩士學位論文CoCu多層膜層間耦合作用的調(diào)節(jié)姓名：王利東申請學位級別：碩士專業(yè)：凝聚態(tài)物理指導教師：姜宏偉20080516ABSTRACTExchangecouplinginmultilayersacrosstheircommoninterface，duetoitsintriguingphysicsandthekeyroleingiantmagnetoresistanceeffectspintronicdevices，has

2、attractedagreatdealofattentioninrecentyearsFerromagneticandantiferromagneticexchangecouplingplayanimportantpartinGMRandTMRapplicationinphysics，materialandtechnologyInthisdissertation，WCstudiedontheexchangecouplingandmagn

3、eticfuctioninCo／CumutilayerssystemTheFe(50A)／[Co／Cu]30multilayershavebeenpreparedbyusingDCmagnetronsputteringTheGMRofthismultilayerscouldreachfifteenpercentatthesecondpeakofinterlayerexchangecoupling，andreacheighteenperc

4、entafterannealingTheGMRofmultilayerswithoutFebufferislessthantheonewithFebufferandforit’SeffectonthegrowthandconfigurationoffilmstheinterlayerexchangecouplinghavebeenaffectedForthesakeofincreasethesensitivitytomagneticfi

5、eld，magneticelementforinstantCohavebeenblendedinthespacerCuinFe(50A)／[Co／Cu]30multilayersanddirectferromagneticcouplinghasbeenintroducedtocompetewiththeantiferromagneticRKKYofadjacentColayers，SOexchangecouplinginadjacent

6、ColayershavebeendepressedTheinterlayercouplingis005erg／cm2with8at％CoblendingandO025erg／cmzwith8at％CoblendingSOithavedepressedwithincreasingtheCoquantityBychangingtheamountofmagneticelementinthespacers，thesaturationmagnet

7、icfieldhasbeenweakeninmultilayersandmultilayersbecomemoresensitivetoexternalmagneticfieldIf8at％CoWaSblendedinthemultilayers，thesensitivityofthemultilayerstoexternalmagneticfieldhaveimproved25％insaturationmagneticfieldThe

8、sampleFe(50A)／[Co／Co(x)Cu(1x)]30hasbeendisposedbyannealingAftertwohoursannealing，thestructureofmultilayershavebeenoptimizedbyXRDandtheantiferromagneticcouplinghavebeenweakenKey：Co／CumultilayersRKKYcouplingremaneneeratioG