CoCrPt-Ag薄膜磁性能和微結(jié)構(gòu)的研究.pdf

1、河北師范大學(xué)碩士學(xué)位論文CoCrPtAg薄膜磁性能和微結(jié)構(gòu)的研究姓名：高鳳菊申請學(xué)位級別：碩士專業(yè)：凝聚態(tài)物理指導(dǎo)教師：孫會元20050410河北師范大學(xué)碩士學(xué)位論文AbstractFourseriesofCoCrPt／AgfilmshavebeenpreparedbymagnetronsputteringontoglasssubstratesatroomtemperatureThemicrostructureandmagneticpr

2、opertiesofCoCrPt／AgnanocompositefilmswereinvestigatedasfunctionsofthethicknessofAgunderlayerandannealingtemperatureThepropertiesof【CoCrPt(25nm)／Ag(rnm)]o／Ag(20rim)wereinvestigatedasfunctionsofthethicknessofAginsertlayera

3、ndannealingtemperatureThemicrostructureandmagneticpropertieswe磚measuredbyXraydiffraction(XRD)scanningprobemicroscope(SPM)andvibratingsamplemagnetometerfvSM)ThethicknessofAgunderlayerhasgreateffectonthemicrostmctureandmag

4、neticpropertiesofCoCrPt／AgfilmsWimincreasingthethicknessofAgunderlayertheeoercivityfirstincreasesthendecreasesWhenthethicknessofAgunderlayeris20nmthecoereivityreachesthemaximum175X105A／mItsstructureishcpstructurelyingont

5、heplaneTheAgunderlayermakesgrainsandmagneticdomainssmallanduniformTheas—depositedfilmisamorphousThestructureofthefilmannealedat3509CishcpstructurewithCo(100)andCo(101)lyingontheplaneTheeoercivityincreaseswithincreasingof

6、theannealingtemperaturePostannealingmaydiffuseAgtothemagneticgrainboundariestosegregatethegrainsThesizeofthegrainsfirstdecreasesthenincreases，ThethicknessofAginsert—layerhaseffectOllthe礎(chǔ)orieiltationandmagneticpropertieso

7、f【CoCrPt(25nm)／Ag(tnm)]IdAg(20DITI)multilayersWithincreasingthethicknessofAginsert—layerthecoercivityfirstincreasesthendecreasesThecoercivityreachesmaximumabout213X105Aim，WellisolateddomainswerefoundinthemultilayersPosta

8、nnealingleadstoincreasingthecoercivityof【CoCrPt(25nm)／Ag(03nm)]ldAg(20rim)，WithincreasingannealingtemperaturethecoercivityincreasesandthesurfaceissmootherKeywords：Magneticrecording；CoCrPt；Nanogranularfilms；Magnetronsputt