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Journal of Advanced Ceramics 2016, 5(1): 77-83 https://doi.org/10.1007/s40145-015-0175-8
Research Article | Open Access | Issue | Published: 31 March 2016

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

Show Author's Information Jianqiang LIa,  Guoqing BAa,  Xiwei QIb,  Xiaoyu LIa( ),  Yingcui SONGa,c,  Bo 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
Keywords:
dielectric properties, nanocrystalline ceramic, glass, BaTi2O5, containerless solidification
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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Abstract Full text About this article

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

Show Author's information Jianqiang LIa, Guoqing BAa, Xiwei QIb, Xiaoyu LIa( ), Yingcui SONGa,c, Bo 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

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.

Keywords: dielectric properties, nanocrystalline ceramic, glass, BaTi2O5, containerless solidification

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Publication history
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Publication history

Received: 25 August 2015
Revised: 28 October 2015
Accepted: 11 November 2015
Published: 31 March 2016
Issue date: June 2021

Copyright

© The author(s) 2016

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 51471158, 51274182, and 51474061) and Beijing Natural Science Foundation (Nos. 2152032 and 2112039).

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