张变芳,沈英明,张承臣,史严

• 1:石家庄铁道大学数理系
• 2:石家庄铁道大学应用物理研究所
• 3:石家庄铁道大学科技处
• 4:沈阳隆基电磁科技股份有限公司技术部

摘要(Abstract)：

用溶胶-凝胶制备了系列Ni_(0.5)Cu_(0.5)Fe_2O_4铁氧体微粉。采用扫描电子显微镜、X射线衍射仪、振动样品磁强计和网络矢量分析仪对粉末的形貌、结构、磁性以及介电性能进行了表征。结构表明,反应温度为40℃,前驱体在1000℃煅烧转变成纯尖晶石结构。三粉末样品在室温和低温都具有铁磁特性,而且出现交换偏置效应。纯尖晶石结构样品3的电磁损耗角正切值tanδ在2~6.5 GHz范围内随频率的增大而增大,以后逐渐减小。

关键词(KeyWords)： 铁氧体;交换偏置效应;介电性能

Abstract:

Keywords:

基金项目(Foundation): 国家杰出青年基金(50625518);; 河北省自然科学基金(A2014210025);; 河北省教育厅重点课题(ZD20131012)

作者(Author): 张变芳,沈英明,张承臣,史严

DOI: 10.13289/j.issn.1009-6264.2016.10.003

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