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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 14    No. 1    February 2004

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Preparation and properties of Ba3ZnZCo2-ZFe24O41/SiO2
microcrystalline glass ceramics
ZHANG Hai-jun(张海军)1, JIA Xiao-lin(贾晓林)1, YAO Xi(姚 熹)2, ZHANG Liang-ying(张良莹)2

1. High Temperature Ceramics Institute, Zhengzhou University, Zhengzhou 450052, China;
2. Functional Materials Research Laboratory, Tongji University, Shanghai 200092, China

Abstract:Ba3ZnZCo2-ZFe24O41/SiO2(Zvaries from 0.0 to 1.2 in step of 0.4) microcrystalline glass ceramics were prepared by citrate sol-gel process at 1 200℃in the system of BaO-Fe2O3-CoO-ZnO-SiO2. The samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The complex dielectric constant and complex permeability of Ba3ZnZCo2-ZFe24O41/SiO2microcrystalline glass ceramics were measured in the range of 0.1 6.0 GHz by transmission/reflection coaxial line method. The natural resonance phenomenon was observed inμ″spectra for all the Ba3ZnZCo2-ZFe24O41/SiO2microcrystalline glass ceramics, which was closely affected by the substitution of Zn2+ion.

 

Key words: Ba3ZnZCo2-ZFe24O41/SiO2; microcrystalline glass ceramics; sol-gel; complex dielectric; complex permeability

ISSN 1672-7029
CN 43-1423/U

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