高压物理学报2013，Vol.27Issue(1)：29-33,5.
压力对纳米CoFe2O4/SiO2复合材料结构的影响
Effects of Pressure on the Structure of CoFe2O4/SiO2 Nanocomposites
摘要
Abstract
Combined with sol-gel technology and high-pressure and high-temperature technique, CoFe2O4/SiO2 nanocomposites are fabricated. The structure and magnetic property of the nanocomposites are monitored by X-ray diffraction ( XRD) , scanning electron microscope (SEM) and vibrating sample magnetometer (VSM). The results show that the lattice constant of CoFe2O4 decreases but the grain size increases with increasing treatment pressure in the experiment. Moreover, the specific saturation magnetization increases gradually with increasing treatment pressure. According to the calculation results,it can be concluded that the increasing pressure leads to the Fe3+ ions transfer from A sites to B sites and the Co2+ ions transfer from B sites to A sites.关键词
CoFe2O4/SiO2/溶胶-凝胶/高温高压/阳离子占位Key words
CoFe2O4/SiO2 / sol-gel/ high pressure and high temperature/ cation occupation分类
数理科学引用本文复制引用
李季,王丽,贾晓鹏,李海波..压力对纳米CoFe2O4/SiO2复合材料结构的影响[J].高压物理学报,2013,27(1):29-33,5.基金项目
吉林省科技发展计划项目(201205075) （201205075）
