Dielectric properties and defect chemistry of La and Tb co-doped BaTiO3 ceramics
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- 作者：Da-Yong Lua ; cninjp11232000@yahoo.com" class="auth_mail" title="E-mail the corresponding author ; dylu@jlict.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Yan-Yan Penga ; Xin-Yu Yua ; b ; Xiu-Yun Sunc ; XYSun@jlict.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Ceramics ; Mixed-valence ; Defect complexes ; Dielectric response ; Electron paramagnetic resonance ; X-ray photoelectron spectroscopy
- 刊名：Journal of Alloys and Compounds
- 出版年：2016
- 出版时间：5 October 2016
- 年：2016
- 卷：681
- 期：Complete
- 页码：128-138
- 全文大小：4112 K
文摘
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Dielectric properties and defect chemistry of (Ba1−xLax)(Ti1−xTbx)O3 were studied.
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Solid solution limit of Tb in BLTT is determined by XRD to be greater than x = 0.15.
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Tb ions coexist in the mixed valence states of Ba-site Tb3+ and Ti-site Tb3+/Tb4+.
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The dielectric-peak temperature (Tm) decreased linearly at a rate of −19 °C/%(La
Tb).- •
The x = 0.07 sample is a promising dielectric for X7U applications.