151Eu Mössbauer measurements of CuLa1 − xEuxO2 with luminescent property

被引：0
|
作者：
Fumito Fujishiro
Takuya Hashimoto
Masashi Takahashi
机构：
[1] Nihon University,Department of Physics, College of Humanities and Sciences
[2] Nihon University,Department of Integrated Sciences in Physics and Biology, College of Humanities and Sciences
[3] Toho University,Department of Chemistry, Faculty of Sciences
来源：
Hyperfine Interactions | 2012年 / 208卷
关键词：
CuLa; Eu; O; Eu Mössbauer spectra; Photoluminescence; Thermodynamic calculation;
D O I：
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学科分类号：
摘要：
An increase of the asymmetric ratio of photoluminescence lines from CuLa1 − xEuxO2 was observed under 100 K, suggesting a lower site symmetry for the Eu cation. Mössbauer spectra of CuLa0.8Eu0.2O2 measured at 77 K revealed that the valence of Eu is trivalent and that the crystal structure of CuLa1 − xEux O2 might contain a EuO6 octahedron with lower symmetry. The thermodynamic stability of the valence of Cu and Eu was calculated, showing agreement with Mössbauer spectra.
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页码：25 / 28
页数：3
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