Thermal Effects on Stoichiometric LiTaO3 Single Crystal

被引:0
|
作者
Yeom, T. H. [1 ]
Lee, S. H. [1 ]
机构
[1] Dept Phys, Cheongju 360764, South Korea
来源
关键词
EPR; paramagnetic impurity ion; ferroelectrics; stoichiometric LiTaO3; thermal treatment;
D O I
10.4283/JKMS.2005.15.3.177
中图分类号
O59 [应用物理学];
学科分类号
摘要
Ferroelectric LiTaO3 single crystals, grown by the Czochralski method, were thermally treated at temperature 1000 degrees C and 1100 degrees C. Electron paramagnetic resonance (EPR) study of stoichiometric LiTaO3 and thermally treated LiTaO3 crystals has been investigated by employing an X-band spectrometer. From the Fe3+ EPR spectra, it turned out that there is no change of site location and local site symmetry around Fe3+ impurity ion between stoichiometric and thermally treated LiTaO3 single crystals. We confirmed that the ionic state of Fe3+ ion changed after thermal treatment. The EPR parameters of Fe3+ ion in LiTaO3 single crystals are determined with effective spin Hamiltonian.
引用
收藏
页码:177 / 180
页数:4
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