57Co Mössbauer Emission Study of LiNbO3, Fe:LiNbO3 and Mg:LiNbO3 in Various Thermochemical Reduction States

被引：0
|
作者：
T. Becze-Deák
L. Bottyán
G. Corradi
L. Korecz
D. L. Nagy
K. Polgár
S. Sayed
H. Spiering
机构：
[1] KFKI Research Institute for Particle and Nuclear Physics,Crystal Physics Laboratory
[2] KFKI Research Institute for Particle and Nuclear Physics,Institute of Chemistry, Chemical Research Center
[3] Institute for Solid State Physics and Optics,Institut für Anorganische Chemie und Analytische Chemie
[4] Hungarian Academy of Sciences,undefined
[5] Al-Azhar University,undefined
[6] Johannes Gutenberg Universität,undefined
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2000年 / 246卷
关键词：
Physical Chemistry; Inorganic Chemistry; Structure Analysis; Emission Spectrum; Charge State;
D O I：
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中图分类号：
学科分类号：
摘要：
57Co Mössbauer emission spectra of undoped and Fe or Mg melt-doped LiNbO3 single crystals show substantial amounts of the nucleogenic Fe3+ charge state (*Fe3+) which was generated as an after-effect of the electron-capture of 57Co2+. The proportion of *Fe3+ is markedly dependent on the Mg content and on the stoichiometry of the sample. Electron trapping is described within the model of competing acceptors. The capabilities of the model are investigated in defect structure analysis and charge trapping studies of LiNbO3.
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页码：33 / 37
页数：4
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