Low-Frequency Dielectric Responses of Proton-Exchanged LiTaO_3

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概要

• 論文の詳細を見る

• A space charge field model has been proposed for explaining the mechanism of domain inversion caused by heat treatment in proton-exchanged LiTaO_3. The purpose of this study is to examine the existence of the space charges caused by proton exchange of LiTaO_3. The low-frequency dielectric responses of proton-exchanged LiTaO_3 measured at high temperatures are presented. It is shown that the dielectric constant and the dielectric loss are about one order of magnitude greater than those of unprocessed plates, and that the activation energy of proton-exchanged plates is different from that of unprocessed plates. These results indicate that a different speaies of defects arises in LiTaO_3 due to proton exchange, and this results in a drastic increase of charged point defects.

• 社団法人応用物理学会の論文
• 1993-09-30

著者

• NAKAMURA Kiyoshi

  Faculty of Engineering Tohoku University

• Nakamura Kiyoshi

  Facully Of Engineering Tohoku University

• Tourlog A

  Tohoku Univ. Sendai Jpn

• Tourlog Ailie

  Faculy Of Engineering Tohoku University

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• SH-Type Leaky Surface Waves on Rotated Y-Cut LiTaO_3 Substrates With a Ferroelectric Inversion Layer : SAW and Communication Devices
• Low-Frequency Dielectric Responses of Proton-Exchanged LiTaO_3
• Antipolarity Domains Formed by Heat Treatment of Ferroelectric Crystal and Their Applications

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