4 February 1997 Optical nonlinear properties and structural phase transitions in a new promising ferroelectric family LnBXO5 (Ln-La, Pr; X-Ge, Si)
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Proceedings Volume 2967, Optical Inorganic Dielectric Materials and Devices; (1997) https://doi.org/10.1117/12.266530
Event: International Conference on Advanced Optical Materials and Devices, 1996, Riga, Latvia
Abstract
The new family of ferroelectric oxides presented and some of its properties including nonlinear optical properties of LaBGeO5 (LBGO) are considered. It is shown that these oxides have high Curie temperatures, symmetry change P3121 yields P31 and the mixed displacive and order- disorder type of the phase transitions. All second harmonic generation (SHG) tensor components are determined for LBGO crystals and the magnitude of the spontaneous polarization is evaluated from the vector part of SHG tensor as 2.4 plus or minus 0.8 (mu) C/cm2. The phase transitions in PrBGeO5 and LaBSiO5 crystals are considered taking into account SHG data for powder samples.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
B. A. Strukov, B. V. Mill, Eleva L. Belokoneva, S. Yu. Stefanovich, V. N. Sigaev, Yoshiaki Uesu, "Optical nonlinear properties and structural phase transitions in a new promising ferroelectric family LnBXO5 (Ln-La, Pr; X-Ge, Si)", Proc. SPIE 2967, Optical Inorganic Dielectric Materials and Devices, (4 February 1997); doi: 10.1117/12.266530; https://doi.org/10.1117/12.266530
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