徐超,卢佃清,刘学东,尚涛

• 1:淮海工学院理学院
• 2:内蒙古大学物理科学与技术学院

摘要(Abstract)：

采用柠檬酸溶胶-凝胶自蔓延法制备了Ba3(Zn1-xCox)2Fe24O41(x=0.2,0.4,0.6,0.8)铁氧体纳米晶颗粒。材料相结构、静态磁参数和电磁参数分别通过XRD、VSM和矢量网络分析仪测得。结果表明,随着Co含量的增加,样品静态磁性能的改变与Co2+在点阵中的占位密切相关;样品的复磁导率实部的变化较好的符合单畴畴转磁化理论,而其虚部变化还要受到旋磁阻尼系数的影响;样品的复介电常数受到Co含量和晶粒尺寸的共同影响。反射功率损耗测试表明,在X波段1 mm厚x=0.6样品的反射功率损耗最大吸收值可达49.907 dB,并且反射功率损耗大于30 dB和20 dB的频宽分别为3.56 GHz和4.26 GHz。可见x=0.6样品在整个X波段内具有非常好的微波吸收性能,是X波段理想的微波吸收剂。

关键词(KeyWords)： Z型铁氧体;吸波材料;溶胶-凝胶自蔓延;电磁损耗

Abstract:

Keywords:

基金项目(Foundation): 江苏省高校自然科学研究计划项目(06KJD430014)

作者(Author): 徐超,卢佃清,刘学东,尚涛

DOI: 10.13289/j.issn.1009-6264.2011.01.005

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