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Research Article | Open Access

Nanocrystalline BaTi2O5 dielectric ceramic prepared by full crystallization from containerless solidified glass

Jianqiang LIaGuoqing BAaXiwei QIbXiaoyu LIa( )Yingcui SONGa,cBo LIc
National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China
Research Institute for Advanced Materials, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
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Abstract

We show that fully dense nanocrystalline titanate ceramic could be obtained by full crystallization from glass which was prepared by a novel contactless solidification process. Through annealing above glass transition temperature Tg for prescribed duration, BaTi2O5 ceramic with grain size of 20–130 nm was successfully fabricated. The dependence of the nanoceramic’s dielectric constant and dissipation on frequency was investigated. The results show clearly that the dielectric constant of BaTi2O5 nanoceramic depends on average grain size in nanometer scale, and an optimal range of the grain size is found which exhibits greater dielectric constant than conventional microcrystalline ceramics. The as-fabricated ceramic also possesses lower dielectric dissipation, which can be mainly attributed to the presence of nanometer-sized grains.

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Journal of Advanced Ceramics
Pages 77-83
Cite this article:
LI J, BA G, QI X, et al. Nanocrystalline BaTi2O5 dielectric ceramic prepared by full crystallization from containerless solidified glass. Journal of Advanced Ceramics, 2016, 5(1): 77-83. https://doi.org/10.1007/s40145-015-0175-8

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Received: 25 August 2015
Revised: 28 October 2015
Accepted: 11 November 2015
Published: 31 March 2016
© The author(s) 2016

Open Access The articles published in this journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons. org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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