期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 195, 期 -, 页码 115-119出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2012.07.036
关键词
Polar; Lithium niobate; Non-centrosymmetric; Second harmonic generation; Dielectric permittivity; Second-order Jahn-Teller effect
资金
- JSPS KAKENHI [21360325, 24360275]
- Ministry of Education, Culture, Sports, Science and Technology, Japan
- Welch Foundation [E-1457]
- Texas Center for Superconductivity
- International Centre for Diffraction Data
- Grants-in-Aid for Scientific Research [21360325] Funding Source: KAKEN
The dielectric properties of a polar LiNbO3-type ZnSnO3 synthesized under high-pressure have been investigated with respect to the dielectric permittivity in the relative low frequency range of 10 kHz to 1 MHz and the SHG response at an optical frequency. The small temperature dependence of dielectric permittivity without anomaly was observed in the temperature range of 300 K to 780 K. LiNbO3-type ZnSnO3 exhibits the maximum SHG efficiency of approximately 50 times that of quartz. We then compare the structure and SHG response with those of iso-structural LiNbO3 and other known LiNbO3-type oxides. It was found that the magnitude of SHG response is correlated to the magnitude of intra-octahedral distortion, which is effectively brought by the second-order Jahn-Teller effect. (C) 2012 Elsevier Inc. All rights reserved.
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