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Journal of Materials Science: Materials in Electronics
Published in:

28-07-2016

Optical, dielectric and ferroelectric properties of KTa0.63Nb0.37O3 and Cu doped KTa0.63Nb0.37O3 single crystals

Authors: Xu-Ping Wang, Qing-Gang Li, Yu-Guo Yang, Yuan-Yuan Zhang, Xian-Shun Lv, Lei Wei, Bing Liu, Jian-Hua Xu, Ling Ma, Ji-Yang Wang

Published in: Journal of Materials Science: Materials in Electronics | Issue 12/2016

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Abstract

KTa0.63Nb0.37O3 and Cu doped KTa0.63Nb0.37O3 single crystals were grown by the Czochralski method. The phase, optical and electric properties were characterized. The differences of XRD and color for KTa0.63Nb0.37O3 and Cu doped KTa0.63Nb0.37O3 single crystals are observed. Emission bands corresponding to Cu0 and Cu+ except of emission bands originating from KTa0.6Nb0.4O3 host were observed in the emission spectra of the KTa0.63Nb0.37O3:Cu single crystals. On the basis of these differences, we speculate the dominating existence of Cu0 and residual existence of Cu+ in KTa0.63Nb0.37O3 single crystal. The existence of Cu0 in KTa0.63Nb0.37O3 single crystal influences the optical and dielectric properties of crystal. The higher dielectric constant of Cu doped KTa0.63Nb0.37O3 single crystal than that of pure KTa0.63Nb0.37O3 single crystal is induced by the decrease of the resistance of the grain.
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Literature
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Metadata
Title
Optical, dielectric and ferroelectric properties of KTa0.63Nb0.37O3 and Cu doped KTa0.63Nb0.37O3 single crystals
Authors
Xu-Ping Wang
Qing-Gang Li
Yu-Guo Yang
Yuan-Yuan Zhang
Xian-Shun Lv
Lei Wei
Bing Liu
Jian-Hua Xu
Ling Ma
Ji-Yang Wang
Publication date
28-07-2016
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 12/2016
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-016-5450-0

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