CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Determination of elastic, piezoelectric, and dielectric constants of an R:BaTiO3 single crystal by Brillouin scattering |
He Xiao-Kang(何小亢)a), Zeng Li-Bo(曾立波) a), Wu Qiong-Shui(吴琼水)a), Zhang Li-Yan(张丽艳)b)†, Zhu Ke(朱恪) b), and Liu Yu-Long(刘玉龙)b) |
a. Electronic Information School, Wuhan University, Wuhan 430072, China; b. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China |
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Abstract From the sound velocity measured using the Brillouin scattering technique, the elastic, piezoelectric, and dielectric constants of a high-quality monodomain tetragonal Rh:BaTiO3 single crystal are determined at room temperature. The elastic constants are in fairly good agreement with those of the BaTiO3 single crystal, measured previously by Brillouin scattering and the low-frequency equivalent circuit methods. However, their electromechanical properties are significantly different. Based on the sound propagation equations and these results, the directional dependence of the compressional modulus and the shear modulus of Rh:BaTiO3 in the (010) plane is investigated. Some properties of sound propagation and electromechanical coupling in the crystal are discussed.
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Received: 16 January 2012
Revised: 21 February 2012
Accepted manuscript online:
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PACS:
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78.35.+c
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(Brillouin and Rayleigh scattering; other light scattering)
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77.84.Dy
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10874236 and 60808010). |
Corresponding Authors:
Zhang Li-Yan
E-mail: zhangly@aphy.iphy.ac.cn
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Cite this article:
He Xiao-Kang(何小亢), Zeng Li-Bo(曾立波), Wu Qiong-Shui(吴琼水), Zhang Li-Yan(张丽艳), Zhu Ke(朱恪), and Liu Yu-Long(刘玉龙) Determination of elastic, piezoelectric, and dielectric constants of an R:BaTiO3 single crystal by Brillouin scattering 2012 Chin. Phys. B 21 067801
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