Improved sintering characteristics and microwave dielectric properties of NdNbO4 ceramic system

被引：8

作者：

Zhang, P. ^{[1
]}

Song, Z. K. ^{[1
]}

Gao, B. L. ^{[2
]}

Wang, Y. ^{[1
]}

Wang, T. ^{[1
]}

Han, Y. M. ^{[1
]}

Xia, W. S. ^{[1
]}

Li, L. X. ^{[1
]}

机构：

[1] Tianjin Univ, Sch Elect & Informat Engn, Tianjin 300072, Peoples R China

[2] China Waterborne Transport Res Inst, Beijing 100088, Peoples R China

来源：

MATERIALS RESEARCH INNOVATIONS | 2014年 / 18卷 / 04期

基金：

中国博士后科学基金;

关键词：

NdNbO4; ceramics; CuO addition; Microwave dielectric properties; Microstructure; NIOBATES; BEHAVIOR; CUO;

D O I：

10.1179/1433075X13Y.0000000144

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

NdNbO4-xCuO (x=0, 0.15, 0.2, 0.3, 0.4, 0.5, 1 wt-%) ceramics with improved sintering characteristic and microwave dielectric properties were prepared by conventional mixed oxide route. The effects of CuO addition on the microstructures and microwave dielectric properties of NdNbO4 ceramics were investigated systematically. Microscopic analysis showed that CuO doped NdNbO4 ceramics possess second phases of CuNb2O6 and Nd2Cu2O5. With a further increase in the amount of CuO, Cu3Nb2O8 phase appeared in the system. The addition of CuO effectively reduced the sintering temperature of NdNbO4 ceramics by similar to 275 degrees C. The microwave dielectric properties were strongly dependent on the CuO addition. Optimal microwave dielectric properties of epsilon(r)=19.76, tau(f)=-24 ppm degrees C-1 and Q x f=39 000 GHz were observed for 0.2 wt-% CuO doped NdNbO4 ceramics sintered at 975 degrees C for 4 h.

引用

页码：284 / 288

页数：5

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