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Applied Physics A

, 125:29 | Cite as

Effects of Zr substitution on microstructure and microwave dielectric properties of Zn(Ti1−xZrx)Nb2O8 ceramics

  • Yujia Huang
  • Yueming LiEmail author
  • Zhumei Wang
  • Zhixiang Xie
  • Zongyang Shen
  • Yan Hong
Article
  • 77 Downloads

Abstract

Zn(Ti1−xZrx)Nb2O8(x = 0, 0.2, 0.4, 0.5, 0.6) ceramics were prepared by conventional solid-state reaction process. The effects of Zr substitution for Ti on the phase composition, microstructure, and the microwave dielectric properties of Zn(Ti1−xZrx)Nb2O8 ceramics were investigated by using X-ray diffraction and scanning electron microscopy. The phase transition from ZnTiNb2O8 to ZnZrNb2O8 occurred at x = 0.5. The grain size decreased and the distribution of grain size was more homogeneous with increasing x. While εr and τf decreased slightly, a great improvement in Q × f value was obtained by the promoted densification and the uniform grains. The best combination of microwave dielectric characteristics was obtained for the composition of x = 0.4 and sintered at 1120 °C for 6 h: dielectric constant εr was 33.43, quality factor Q × f reaches 59,475 GHz, and the temperature coefficient of the resonant frequency τf was − 76.54 × 10−6/°C.

Notes

Acknowledgements

This work is supported by the National Natural Science Foundation (no. 61671224) and Jiangxi Provincial Natural Science Foundation of China (no. 20171BAB216008).

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Materials Science and Engineering, Jingdezhen Ceramic Institute, China National Light Industry Key Laboratory of Functional Ceramic Materials, Energy Storage and Conversion Ceramic Materials Engineering Laboratory of Jiangxi ProvinceJingdezhenChina

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