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无机材料学报

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2009 , Vol. 24 >Issue 2: 383 - 386

DOI: https://doi.org/10.3724/SP.J.1077.2009.00383

研究论文

BST/YIG复合材料的相结构、介电性能和磁性能的研究

  • 李 翔 ,
  • 严 彪 ,
  • 董 刚 ,
  • 赵慎强 ,
  • 梁小伟
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  • 同济大学 材料科学与工程学院，上海市金属功能材料开发应用重点实验室， 上海 200092

收稿日期: 2008-07-01

  修回日期: 2008-09-09

  网络出版日期: 2009-03-20

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Study on Phase Structure, Dielectric and Magnetic Properties of BST/YIG Composites

  • LI Xiang ,
  • YAN Biao ,
  • DONG Gang ,
  • ZHAO Shen-Qiang ,
  • LIANG Xiao-Wei
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  • Shanghai Key Lab of Metal Functional Materials, School of Materials Sciences and Engineering, Tongji University, Shanghai 200092, China

Received date: 2008-07-01

  Revised date: 2008-09-09

  Online published: 2009-03-20

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摘要

以铁电性的钛酸锶钡（BST）和铁磁性钇铁氧体（YIG）为原料，采用固相反应法，合成了一系列铁电/铁磁复合材料，并对铁电/铁磁复合材料（YIG/BST）的介电性能和磁性能进行了详细地研究. 结果表明：在一定温度下烧结所得的铁电/铁磁复合材料，由铁电相和铁磁相两相组成；xBST-(1-x)YIG(x=0，0.1，0.2，0.3，0.4，0.5，0.6，0.7，0.8，0.9，1.0)复合材料具有良好的介电性能和磁性能, 其介电常数实部ε′与虚部ε″均随BST含量的增加而升高，且介电常数的谐振峰随着YIG含量的增加而向频率高的方向移动.磁导率实部μ′与虚部μ″均随BST含量的增加而降低. 在YIG铁氧体中加入适量的陶瓷BST构成复合材料，可以有效地改善截止频率，提高高频电磁特性.

关键词： 铁电/铁磁复合材料; 钛酸锶钡; 钇铁氧体; 电感; 电容

本文引用格式

李 翔 , 严 彪 , 董 刚 , 赵慎强 , 梁小伟 . BST/YIG复合材料的相结构、介电性能和磁性能的研究[J]. 无机材料学报, 2009 , 24(2) : 383 -386 . DOI: 10.3724/SP.J.1077.2009.00383

Abstract

A series of composites were synthesized by solidstate reaction, with ferroelectric powder of BST and ferromagnetic powder of YIG as raw materials. Dielectric and magnetic properties of ferroelectricferromagnetic composites were tested. The results show that the ferroelectric/ferromagnetic composites sintered at proper temperature consist of ferroelectric phase and ferromagnetic phase. The composite materials xBST-(1-x)YIG(x=0，0.1，0.2，0.3，0.4，0.5，0.6，0.7，0.8，0.9，1.0) exhibit excellent dielectric and magnetic properties. Both ε′ and ε″ increase with the increase of BST content, and the dielectric resonant frequency shifts to a higher frequency with YIG content increasing. The permeability rises with BST content decreasing. The resonance frequency and high frequency characteristics of YIG are improved by adding BST.

Key words： ferroelectric/ferromagnetic composites; BST; YIG; inductance; capacitance

参考文献

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