摘要
采用水热法制备出亚微尺寸Fe3O4空心球。用X射线衍射谱(XRD)和傅里叶红外光谱(FT-IR)表征了样品的相结构,用透射电子显微镜(TEM)和场发射扫描电子显微镜(FESEM)照片表征样品的形貌,表明在一定反应条件(反应温度、反应时间、反应试剂)下,反应产物可形成不同的形貌:针叶状的纳米颗粒、亚微尺寸的疏松球、实心球和空心球等。用振动样品磁强计(VSM)测量了样品的室温磁性,表明Fe3O4亚微空心球样品表现为铁磁性。
Fe3O4 submicrometer hollow spheres were prepared by a simple hydrothermal route, and characterized by X - ray powder diffraction （ XRD ） spectra, fourier transform - infrared （FTIR） spectra, trans- mission electron microscopy （ TEM）, field - emission scanning electron microscopy （FESEM） and vibra- ting sample magnetometer（VSM）. FTIR and XRD results reveal the state of matter and crystal structure of the as -prepared Fe3O4 particles. TEM and FESEM images show that the products have different shapes when the reaction condition is different. Magnetic hysteresis loop indicates that the as -prepared Fe3O4 hollow spheres exhibit a ferromagnetic behavior.
出处
《功能材料与器件学报》
CAS
CSCD
北大核心
2009年第6期559-563,共5页
Journal of Functional Materials and Devices
基金
国家自然基金资助项目(编号:50672001)
关键词
FE3O4
空心球
水热法
磁性
Fe3O4
hollow spheres
hydrothermal route
magnetic properties
