文档介绍：AsimplesynthesisofFe3O4powdersandtheirStructure,*:DepartmentofPhysics,ZhoukouNormalUniversity,Zhoukou466000,:**********;E-mailaddress:liukuili@,,DepartmentofPhysics,ZhenzhouelecticlpowercollagezhanghaiyangPeople’-,morphologiesofFe3O4havebeencharacterizedbyx-raydiffraction(XRD)andscanningelectronmicroscopy(SEM)equippedwithenergydispersivex-rayspectrometer(EDX).,theroom-,S2andS3is,and,respectively,izationofthebulkγ-Fe2O3(76emu/g).ItisprovedfurtherthatFe3O4powderscanbesynthesizedbythecitrate-nitratesol-:Fe3O4;icmaterials;Sol-gelpreparation;,Fe3O4,icinversespinelstructurewithananomaloushighCurietemperatureof860Kandanexceptionallyhighconductivity[1].Inaddition,theband-itehaveindicatedthatFe3O4ishalf-metallicandtheconductionelectronsare100%spinpolarized[2].oresistivedevices,icstorageandbiomedicine[3-7].essfullysynthesizedbychemicalco-precipitation[8,9],position[10],hydrothermalreaction[11]andsol–gel[12]andothermethod[13].Inthiswork,uniformFe3O4powdersweresynthesizedbythecitrate-nitrat