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1、萬方數(shù)據(jù)·42·材料導(dǎo)報(bào)B：研究篇2012年5月(下)第26卷第5期Structure，MorphologyandMagneticPropertyofSr-ferritePowderSynthesizedbytheCo-precipitationRouteZHANGXian，MAYongqing，WUDandan，MAQian，ZANFenlian，ZHENGGanhong，WUMingzai，LIGuang(AnhuiKeyLaboratoryofInformationMaterialsandDevices，SchoolofPhysicsan
2、dMaterialsScience，AnhuiUniversity，Hefei230039)AbstractM-typeSr-ferritepowderwithFe3+toSr2+of10：1moleratiowassynthesizedbytheehemiealco-precipitation-calcinationroute．Thesamplesweresinteredatdifferenttemperaturesfrom800℃tol100℃inordertoinvestigatetheeffectsofsinteringtemperat
3、ureonthecrystalstructure。grainsize。morphologyandmagneticproperties．Thepowderswerecharacterizedbyinfraredspectra，powderX-raysdiffraction，．scanningelectronmicroscopyandvibratingsamplemagnetometer．Powderssinteredat1000℃showthebesthomogeneityintermsofsizeandmo-rphology，andposse戤
4、sthehighestsaturationmagnetizationof77．87emu／g．Powderssinteredatl100℃haveasphefi—calshapeandshowthelowestcoercivityof16010e．TheresultsalsoshowthatawiderangeofcoercivityvaryingfromlfiOlOeto45910ecouldbeobtainedbyselectingtheappropriatecalcinationtemperature．KeywordsM—typeSrfe
5、rrite，co-precipitation，nanoparticle，magneticproperty共沉淀法制備的鍶鐵氧體磁粉的結(jié)構(gòu)、形貌及磁性能‘張賢，馬永青，吳丹丹，馬倩，昝芬蓮，鄭贛鴻，吳明在，李廣(安徽大學(xué)物理與材料科學(xué)學(xué)院，安徽省信息材料與器件重點(diǎn)實(shí)驗(yàn)?zāi)Γ戏?30039)摘要采用共沉淀法按照n(Fe)：n(Sr)；10；1合成M型鍶鐵氧體。通過把樣品在不同的溫度下退火，研完了退火溫度對晶體結(jié)構(gòu)、形貌和磁性能的影響。所制備的樣品用FTlR、XR『)、sEM和VSM進(jìn)行表征。結(jié)果表明，當(dāng)退必溫度為i000℃時(shí)樣品顆粒分布規(guī)則且比飽和
6、磁化強(qiáng)度迭最大值，為77．87emu／g。當(dāng)退欠溫度為1100℃時(shí)樣品顆粒變成球形且矯頑力最小．為16010e。此外，通過控制退火溫度可使矯頑力在1601～45910e范圍內(nèi)變化。關(guān)鍵詞M型鍶鐵氧體共沉淀法納米顆粒磁性能中圖分類號：TM277文獻(xiàn)標(biāo)識碼：AM-typehexagonalferritessuchasstrontiumandbariumferrite(SrorBa)FelzOl9wereintensivelyinvestigatedinthepastdecadesbecausetheyhaverelativelylargesatur
7、ationmagnetization，highintrinsiccoercivity．a(chǎn)ndhighmagneticanisotropyfield，excellentchemicalstabilityaswellasIowcoatcomparedwithrare-earthcompounds，whichareconsi-derablyimportanttotheelectricalandmagneticproductssuchaspermanentmagnets，high-densitymagnetic．rrmgne—to-opticrecor
8、dingmedia，andmicrowavefiltersI-1．2]．FortheSrhexagonalferrite．itpossessesthe
