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Research Article | Open Access

Microstructures and microwave dielectric properties of (Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 solid solutions

Xianpei HUANGa, Xinyu LIUa, Fei LIUb( ), Changlai YUANa,c, Jingjing QUd, Jiwen XUa, Changrong ZHOUa, Guohua CHENa
School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China
Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, China
Department of Information Engineering, Guilin University of Aerospace Technology, Guilin 541004, China
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Abstract

(Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 (x = 0.02, 0.04, 0.06, 0.08, 0.1) solid solutions were prepared by the conventional solid-state reaction process. It was found that (Ba1−xSrx)4(Sm0.4Nd0.6)28/3 Ti18O54 ceramics are fully composed of BaSm2Ti4O12 and BaNd2Ti5O14 phases for all the compositions. The increasing x value (0.02 ≤ x ≤ 0.1) in (Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 ceramics can not only obtain high Q × f value but also effectively enhance the permittivity ( εr). The (Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 ceramic with x = 0.08, sintered at 1440 ℃ for 4 h, shows excellent microwave dielectric properties of permittivity ( εr) ≈ 93.19, quality factor (Q × f) ≈ 9770.14 GHz (at 3.415 GHz), and almost near-zero temperature coefficient of resonant frequency ( τf) ≈ +4.56 ppm/℃.

Keywords

tungsten bronze typehigh permittivitymicrowave dielectric properties

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Journal of Advanced Ceramics
Volume 6 Issue 1,
March 2017
Pages 50-58
DOI: 10.1007/s40145-016-0217-x
Cite this article:
HUANG X, LIU X, LIU F, et al. Microstructures and microwave dielectric properties of (Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 solid solutions. Journal of Advanced Ceramics, 2017, 6(1): 50-58. https://doi.org/10.1007/s40145-016-0217-x

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Received: 10 May 2017
Revised: 12 January 2016
Accepted: 12 July 2017
Published: 02 March 2017
© The author(s) 2016

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