包覆結(jié)構(gòu)ni,xzn,1xfe,2o,4zno復(fù)合物及其電磁性能研究

1、沈陽理工大學(xué)碩士學(xué)位論文包覆結(jié)構(gòu)NiZnFeOZnO復(fù)合物及其電磁性能研究姓名：張振華申請學(xué)位級別：碩士專業(yè)：應(yīng)用化學(xué)指導(dǎo)教師：曹曉暉孟錦宏20070310沈陽理工大學(xué)碩士學(xué)位論文Inthisarticle，apackagestructureforacompositeoftetrapodshapedZnOwhiskercoatedwithspinelferritetherefore，hasbeendesignedbasedontheme

2、ritsofspinelferriteandZnOwhiskertheshortagesofspinelferriteandtheinfluenceofmorphologyondensityformaterials，andNixZrklx1Fe204ZnOcompositeofZnOwhiskercoatedwithNixZ珥1x)Fe204hasbeensynthesizedsuccessfullythroughco—precipit

3、ationmethodMoreoveraseriesofNixZnox)Fe204ZnOcompositehavebeenpreparedbyregulatingthesynthesisconditionsandtheinfluenceofsynthesisconditionsonthecompositionmorphologyandelectromagneticproperties，etcofthepreparedcomposites

4、arestudiedbyusingXRD，SEM，EDX，IRTGDTAandWaveguidetechniquesTheobtainedresultsareshownasfollowsThewellpackagestructureofNixzn0x)Fe204ZnOcompositewithtetrapod—shapcanobtainedbycoprecipitationandtheinteractionbetweenNixZnox，

5、e204andZnOwhiskerofthecompositeoccurstosomeextentTheincreaseinZnO／Fe2molarratioisgoodfortheformationofthepackagestructureofcomposite，butitalsoincreasetheratetogetthesingleferritebesidestheexpectedcoatedcompositeIntherang

6、eofpH=79，higherpHbenefitsthecreatingoftheferritebutthetetrapodshapofcoatedcompositecanbedestroyedduetothedissolutionofZnOwhiskerunderthehighestpHof9TheincreaseindroptimetoSomeextentisinfavorofformattingthepackagestructur

7、eofcoatedcompositeandenhancingthecrystallinityandcontentofthecompositecoatingNixzn0x)Fe204TheelectromagneticparametertestingexhibitsthefollowingresultsBothdielectriclosstg如andmagneticlosstgJMoftheNixZnox)Fe204ZnOcomposit

8、ealedecreasedbythefiequencyincrease，andamaximumappearsin895GHzThesynthesizedconditionseffectonthetggEandtg函oftheNixznox)Fe204ZnOcompositeowningtotheinfluenceofsynthesizedconditionsonthecompositionandmorphologyereofthecoa