Behavior of Impurities In and Cd in the LiNbO3-LiTaO3 System

• Ohkubo Yoshitaka

  Research Reactor Institute, Kyoto University

• Saito Tadashi

  Radioisotope Research Center, Osaka University

• Murakami Yukihiro

  Graduate School of Science, Kyoto University

• Yokoyama Akihiko

  Department of Chemistry, Faculty of Science, Kanazawa University

• Kawase Yoichi

  Research Reactor Institute, Kyoto University

書誌事項

タイトル別名

• Behavior of Impurities In and Cd in the LiNbO<SUB>3</SUB>-LiTaO<SUB>3</SUB> System

抄録

The temperature dependences of the nuclear-electric-quadrupole frequency ω_Q of ¹¹⁷In and ¹¹¹Cd doped in ferroelectrics LiTaO₃, Li_1−xIn_x⁄3TaO₃ with x=0.2, and Li_1−xCd_x⁄2TaO₃ with x=0.167, measured by the perturbed-angular-correlation technique, indicate that In behaves like Li; further, in a certain temperature range above the phase-transition temperature, a local system consisting of In (Li) and oxygen ions is very stable, by taking resonance structures, whereas Cd does not behave like Li, and a system consisting of Cd and oxygen ions does not take resonance structures, because the ionic size of Cd is large. It is considered that the resonance structures are due to a disordering of the oxygen ions, and that the order-disorder of oxygen ions is the driving mechanism for ferroelectric instability in the LiNbO₃–LiTaO₃ system.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 43 (7), 1469-1474, 2002

  公益社団法人 日本金属学会

キーワード

• lithium niobate
• lithium tantalate
• impurities
• indium
• cadmium
• ferroelectric phase transition
• perturbed-angular-correlation technique

詳細情報

• CRID: 1390001204246811264
• NII論文ID: 130004451858
• NII論文ID: 10012324850
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.43.1469
• COI: 1:CAS:528:DC%2BD38Xmt1eqtL8%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 6240110
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6240110
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/43/7/43_7_1469/_pdf
• 本文言語コード: en
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