Piezoelectric Resonance Properties of a β Phase Quartz Plate
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概要
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We have previously reported an artificial twinning (x-axis inversion) technique for rotated Y-cut quartz plates, The twinning is produced by mechanical stress through a thin metal film deposited on the plate. Such a twinning phenomenon occurs at a considerably lower temperature than the α-β transition temperature, T_c, of 573℃. This paper presents the electromechanical properties of quartz at a temperature region higher than the twinning temperature. Degeneration of the piezoelectric resonances corresponding to the x-axis inversion area and the non-inversion area are observed at a temperature between the twinning temperature and T_c. The elastic stiffness constants c_<55> and c_<66>, estimated from the degeneration mode resonance frequency, agree with these for the β phase. This suggests that the α-β transition occurs by the thin metal film at a considerably lower temperature than T_c of 573℃. An intense piezoelectric response with a high quality factor above 20,000 is observed from the degeneration temperature to above 660℃.
- 社団法人応用物理学会の論文
- 1998-05-30
著者
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NOGE Satoru
Department of Electronics, Nagaoka University of Technology
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UNO Takehiko
Department of Electrical Engineering, Nagoya University
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Noge Satoru
Department Of Electrical And Electronic Engineering Kanagawa Institute Of Technology
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Uno Takehiko
Department Of Electrical And Electronic Engineering Kanagawa Institute Of Technology
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Noge Satoru
Department of Electrical and Electronic Engineering, Kanagawa Institute of Technology
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