摘要
采用氧化物陶瓷工艺制备了Mn0.7Zn0.24Fe2.06O4铁氧体。用X射线衍射仪、扫描电镜、B-H分析仪分别表征了CaCO3-SiO2添加对MnZn铁氧体物相、微结构和磁性能的影响。结果表明,添加于MnZn铁氧体的CaCO3-SiO2主要富集于晶界,且生成另相Ca2ZnSi2O7。随着CaCO3-SiO2含量的增加,磁导率先升高后降低,磁芯损耗则呈现相反的变化趋势。
MnZn ferrites with composition of Mn0.7Zn0.24Fe2.0604 were prepared by conventional oxide technique. The phase composition, microstructure and magnetic property were characterized by using X-ray diffractometer （XRD）, scanning electron microscope （SEM）, and B-H analyzer, respectively. It can be observed that the CaCO3-SiO2 dopants segregates in the grain boundary, forming a new phase Ca2ZnSi207. As the CaCO3-SiO2 additives increased, an initial increase followed by a subsequent decrease of initial permeability was observed. However, the core loss changed contrarily.
出处
《磁性材料及器件》
CSCD
北大核心
2011年第1期32-35,48,共5页
Journal of Magnetic Materials and Devices
