文档介绍：Materials Letters 58 (2004) 1392–1395
ate/matlet
Microwave dielectric properties of Zn(Nb1ÀxTax)2O6 ceramics
YingChun Zhanga,b,*, ZhenXing Yuea, Xiwei Qia, Baorang Lia, ZhiLun Guia, LongTu Lia
a State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, 100084 Beijing, PR China
b Heilongjiang Institute of Science and Technology, 158105 Jixi PR China
Received 21 May 2003; received in revised form 25 August 2003; accepted 25 September 2003
Abstract
Microwave dielectric ceramics Zn(Nb1 À xTax)2O6 were prepared by conventional mixed oxide route. The crystal structure and microwave
dielectric properties of Zn(Nb1 À xTax)2O6 ceramics were investigated systematically using X-ray powder diffraction (XRPD) and work
analyzer. Two kinds of solid solutions based on the ZnNb2O6 and ZnTa2O6 structure, respectively, were observed in this binary system. The
sintering temperature of ceramics increased from 1150 to 1350 jCasx value ranged from 0 to . The dielectric properties exhibited a
significant dependence on the sintering condition, composition and crystal structure of the ceramics. The dielectric constant (er)of
Zn(Nb1 À xTax)2O6 ceramics increased with increasing Ta content, and ranged from at x = 0 to at x = 1. In contrast, the quality
factors ( Q Â f) of this system decreased with increasing