Li-Ti铁氧体的微结构与性能  

Microstructure and Properties of Li-Ti Ferrite

作　　者：陈明[1] 蔡亚夫[2] 许启明[1] 鲁小刚[3] 陈全周[4] 

机构地区：[1]西安建筑科技大学材料科学与工程学院,陕西西安710055 [2]航天科工武汉磁电有限公司,湖北武汉430050 [3]西安电子工程研究所,陕西西安710100 [4]中国电子科技集团公司第二十研究所,陕西西安710068

出　　处：《磁性材料及器件》2007年第5期33-35,45,共4页Journal of Magnetic Materials and Devices

摘　　要：采用常规的氧化物法制备了用于S波段移相器的低饱和磁化强度锂铁氧体材料。用扫描电镜观察了材料的显微结构。发现随Ti含量的增大和烧结温度的增高,材料的平均晶粒尺寸增大,气孔也增多。同时测量了材料的饱和磁化强度、矩形比、矫顽力、介电常数与介电损耗。结果表明,Ti含量的增大可以降低Li铁氧体的饱和磁化强度,其它性能也满足使用要求。We have prepared a series of low saturation magnetization Ti-substituted Li ferrites used in S-band phase shifters. The microstructures of the samples were observed by SEM, The results show that the average grain size increases with increasing both the Ti content and the sinter temperature, and more holes were formed. We have also investigated the saturation magnetization, squareness, coercive force, dielectric constant and dielectric loss tangent. It shows that the addition of Ti can reduce the saturation magnetization of Li ferrite, with other properties meeting the application requirements.

关 键 词：LI铁氧体 Ti代换 微结构 磁性能 

分 类 号：TM277[一般工业技术—材料科学与工程]