Surface Acoustic Waves in High-T_c Superconducting Thin Films on Piezoelectric PbTiO_3 Films
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概要
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To generate surface acoustic waves (SAW) and to fabricate substrates for superconducting Bi-compound film, piezoelectric PbTiO_3 films with preferred c-axis orientation were prepared on MgO (100) substrates by the rf-sputtering method. By using an interdigital electrode fabricated on PbTiO_3 film for generation and detection of SAW, it has been confirmed that SAW with the frequency of 192 MFz are propagated on PbTiO_3 film/MgO substrate, as-deposited Bi-compound film/PbTiO_3/MgO substrate and heat-treated superconducting Bi-compound film/PbTiO_3/MgO substrate. The temperature dependence of the SAW attenuation coefficient has been investigated below room temperature in detail, especially in the neighborhood of the superconducting transition temperature, and found to exhibit almost monotonic decreasing behavior with decreasing temperature.
- 社団法人応用物理学会の論文
- 1992-09-30
著者
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FUKAMI TAKESHI
Department of Cardiothoracic Surgery, The University of Tokyo Graduate School of Medicine
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Fukuda Hideaki
Department Of Physics Fukuoka University Of Education:(present Address) Fundamental Research Laborat
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OHKUBO Hiroshi
Department of Precision Mechanics School of Engineering, Tokai University
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AOMINE Takafumi
Department of Physics, Faculty of Science, Kyushu University
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Ohkubo Hiroshi
Department Of Electrical Engineering The National Defense Academy
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Ohkubo Hiroshi
Department Of Physics Kurume University
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Fukami Takeshi
Department Of Cardiothoracic Surgery The University Of Tokyo Graduate School Of Medicine
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Akinaga Masahiro
Department of Physics, Fukuoka University of Education
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Aomine Takafumi
Department Of Physics Faculty Of Science Kyushu University
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Akinaga Masahiro
Department Of Physics Fukuoka University Of Education
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FUKAMI Takeshi
Department of Physics, Kyushu University
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