Dielectric, Elastic and Piezoelectric Constants of Lanthanum Calcium Oxoborate Single Crystals with Monoclinic Structure of Point Group m

• Shimizu Hiroyuki

  Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST)

• Nishida Takashi

  Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST)

• Nishida Masahiro

  Research Development Division, Sakai Chemical Industry Co., Ltd.

• Takeda Hiroaki

  Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST)

• Shiosaki Tadashi

  Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST)

抄録

In this study, we propose using the d33 mode of a d33⁄d31 meter, new cuts and vibration modes to evaluate electroacoustical constants (dielectric, elastic and piezoelectric constants) of a piezoelectric crystal belonging to point group m. All material constants at room temperature of lanthanum calcium oxoborate LaCa₄O(BO₃)₃ single crystals were thereby determined. The piezoelectric constants d₁₁ and d₃₃ measured by the d33 meter were 2.1 and 1.5 pC/N, respectively. The others were determined by the resonance-antiresonance method using various cuts in which the length-extensional mode and/or face-shear mode can be generated. The elastic compliances s₄₄^E, s₅₅^E and s₆₆^E were 35×10⁻¹², 18×10⁻¹² and 18×10⁻¹² m²/N, respectively. Moreover, in order to investigate the dependence of the Rayleigh surface acoustic wave (RSAW) velocity and coupling coefficient k² on propagation direction, theoretical analysis by computer simulations was carried out for the Z-cut using the elastic compliances obtained in this study. The dependence of RSAW velocity on propagation direction calculated using the elastic compliances obtained did not agree with measurement results, but the calculated results were significantly improved and closer to measurement results.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 44 (9B), 7059-7063, 2005

  The Japan Society of Applied Physics

キーワード

• point group <I>m</I>
• electroacoustical constants
• face-shear mode
• <I>d</I>33⁄<I>d</I>31 meter
• Rayleigh surface acoustic wave velocity

詳細情報

• CRID: 1390001206268501376
• NII論文ID: 210000058842
• NII論文ID: 130004534675
• NII論文ID: 40006898887
• NII書誌ID: AA10457675
• DOI: 10.1143/jjap.44.7059
• ISSN: 13474065
• ISSN: 00214922
• NDL書誌ID: 7460848
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7460848
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.44.7059
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.44.7059/pdf
• 本文言語コード: en
• データソース種別:
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