Ba2ZnZCo2-ZFe12O22-SiO

无机材料学报, 2003, 18(4): 759-764.

Ba₂Zn_ZCo_2-ZFe₁₂O₂₂-SiO_₂微晶玻璃陶瓷的sol-gel合成及性能研究

张海军 , 姚熹 , 张良莹 , 吴明忠

2. 2. 同济大学功能材料研究所, 上海 200092

Zhengzhou University

China

2. 2.Functional Material Research Laboratory

Shanghai 200092

China

关键词： Ba₂Zn_zCo_2-zFe₁₂O₂₂-SiO₂ , microcrystallite glass ceramics , sol-gel , microwave prop- erties

Preparation and Properties of Ba₂Zn_zCo_2-zFe₁₂O₂₂-SiO₂ Microcrystallite Glass Ceramics by Citrate Sol-Gel Process

ZHANG Hai-Jun , YAO Xi , ZHANG Liang-Ying , WU Ming-Zhong

Keywords： Ba₂Zn_zCo_2-zFe₁₂O₂₂-SiO₂ , 微晶玻璃陶瓷 , sol-gel , 微波性能

采用柠檬酸sol-gel工艺合成了Ba₂Zn_ZCo_2-zFe₁₂O₂₂-SiO₂微晶玻璃陶瓷;采用XRD、SEM对其相成分、显微结构进行了分析,结果表明,1200°C/5h得到的Ba₂Zn_ZCo_2-zFe₁₂O₂₂-SiO₂微晶玻璃陶瓷的平均晶粒尺寸在0.3μm左右;采用HP8753E网络分析仪测定了微晶玻璃陶瓷在100MHz～6GHz范围内的介电常数及其磁导率,其复介电常数值、磁导率实部都随测试频率的增加而减小,其磁导率虚部～f曲线上显示出明显的自然共振峰。

Ba₂Zn_ZCo_2-ZFe₁₂O₂₂-SiO₂ microcrystallite glass ceramics were prepared by citrate sol-gel process; The detailed informations of phases
composition and microstructure were obtained by XRD and SEM. It shows that the average crystal size of Ba₂Zn_ZCo_2-ZFe₁₂O₂₂-SiO₂ microcrystallite
glass ceramics calcined at 1200℃/5h is about 0.3μm; The vector network analyzer was used to measure the complex permeability and dielectric
constant of the samples in the frequency range of 0.1～6.0GHz, the complex dielectric constant and the real part of permeability decrease with measuring
frequency increasing, very obvious resonance peaks were observed in μ’’～ f curves.

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