硅酸盐学报

BaFe_(12)O_(19)/SiO_2玻璃陶瓷的合成工艺及电磁特性研究

作者：张海军姚熹张良莹

单位：郑州大学高温材料研究所同济大学功能材料研究所同济大学功能材料研究所郑州450052 上海200092 上海200092

关键词：钡铁氧体/二氧化硅玻璃陶瓷溶胶-凝胶

分类号：TQ171

出版年,卷(期):页码：2003,31(4):366-370

DOI：

摘要：

研究了柠檬酸溶胶 -凝胶工艺制备BaFe1 2 O1 9/SiO2 玻璃陶瓷的条件。在SiO2 的摩尔分数为 5 0 %和 67% ,铁和钡的摩尔比为5∶1～ 7∶1,绕结温度为 10 0 0～ 110 0℃时 ,得到了杂质含量很少的BaFe1 2 O1 9玻璃陶瓷。测定了玻璃陶瓷在 10 0MHz～ 6GHz下的复介电常数和磁导率。结果表明 :其复介电常数、磁导率实部随测试频率的增加而下降 ;磁导率虚部数值在 0左右波动

s: BaFe 12 O 19 /SiO 2 glass ceramics with very little impurity phases were prepared by citrate sol-gel process under the condition of SiO 2 molar fraction of 50% and 67%, n (Fe)∶ n (Ba)=5∶1-7∶1, and the calcined temperature of 1 000-1 100 ℃. The complex dielectric constant and complex permeability dispersion were investigated in the range of 100 MHz-6 GHz. The result shows that the complex dielectric constant and real part of permeability decreases with the increasing of frequency, while the value of imaginary part of permeability is small and near to zero in measuring frequency.

基金项目：

国家自然科学基金 (5 9995 32 0 )重大资助项目 ;; 上海市重点学科建设资助项目

作者简介：

参考文献：

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