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1、山東師范大學(xué)碩士學(xué)位論文AMR有明顯影響。對于Cu(7nm)/Ni81Fe19(10nm)/Cu(x)/Ni81Fe19(10nm)/NiO(25nm)/Cu(4nm)、Ta(7nm)/Ni81Fe19(10nm)/Ta(y)/Ni81Fe19(10nm)/NiO(25nm)/Ta(4nm)、(Ni81Fe19)80.7Nb19.3(2nm)/Ni81Fe19(10nm)/Nb(z)/Ni81Fe19(10nm)/NiO(25nm)/Nb(3nm)系列薄膜研究得出,AMR值對于隔離層厚度具有很強(qiáng)的依賴性,基
2、片溫度為450℃的條件下,在上述不同的隔離層厚度系列中對應(yīng)著不同的最大AMR值和靈敏度,在自旋閥結(jié)構(gòu)中以Cu為隔離層厚度在1nm時其AMR最大達(dá)到2.8%,靈敏度為1.1×10-3%·m·A-1;Ta為隔離層時厚度在2nm時其AMR最大達(dá)到2.6%,靈敏度為2.3×10-3%·m·A-1,Nb為隔離層時厚度在1.5nm時其AMR最大達(dá)到3.2%,其靈敏度達(dá)4.9×10-3%·m·A-1。本文研究表明,氧化插層中NiFe的插入以及自旋閥結(jié)構(gòu)中隔離層的厚度和不同的非磁性金屬材料對NiFe多層薄膜AMR值和磁性能
3、都有很大影響。關(guān)鍵詞:各向異性磁電阻;氧化插層;自旋閥;隔離層;矯頑力;靈敏度分類號:O484.4+3文獻(xiàn)標(biāo)示碼AII萬方數(shù)據(jù)山東師范大學(xué)碩士學(xué)位論文ThemagnetoresistancepropertiesandcharacterizationofNiFefilmsAbstractTheapplicationofNiFefilmplayaveryimportantroleinthemagneticfield.Itsmagnetoresistancehavedirectivitymakeithaveabr
4、oadapplicationinearthmagnetismnavigationfield.Italsohaveabroadapplicationinproductionofsensorandheadbecauseithasasmallmagneticsaturationfieldandahighmagneticfieldsensitivity.Inthispaper,theAMRvalueandmagneticperformanceofNiFefilmsareimprovedtomeetthepracti
5、caldemandformagneticmaterial.AseriesofTa(3nm)/NiO(T)/NiFe(I)/NiO(2nm)/NiFe(20nm)/NiO(2nm)/NiFe(I)/NiO(T)/Ta(4nm),Cu(7nm)/Ni81Fe19(10nm)/Cu(x)/Ni81Fe19(10nm)/NiO(25nm)/Cu(4nm),Ta(7nm)/Ni81Fe19(10nm)/Ta(y)/Ni81Fe19(10nm)/NiO(25nm)/Ta(4nm),(Ni81Fe19)80.7Nb19.
6、3(2nm)/Ni81Fe19(10nm)/Nb(z)/Ni81Fe19(10nm)/NiO(25nm)/Nb(3nm)werepreparedunderappropriateconditions.TheeffectofthatNiFewasinsertedintooxidationintercalationfortheAMRvalueofNiFefilmsarestudiedatrequiredprocesscondition.Atthesametime,theeffectsofdifferentisol
7、atingcoursematerialwithdifferentthicknessfortheAMRvalueofNiFefilmsarestudied.TheAMRvalueandhysteresishoopofNi81Fe19filmsweremeasuredbyfourpointprobetechnologyandvibratingsamplemagnetometer(VSM)respectively.Weanalysistheexperimentalresultsandobservethefollo
8、wingconclusions:(1)AlittleNiFewhichareinsertedintoNiOhaveagreatinfluenceontheAMRvalueofNiFefilmunderhightemperatureconditions.WiththeNiFe(I)thicknessincreasing,theAMRvalueofNiFefilmfirstlyincreaseandthenreduc