Perturbed-Angular-Correlation Studies on <SUP>111</SUP>Cd and <SUP>117</SUP>In in Pyrochlore Cd<SUB>2</SUB>Nb<SUB>2</SUB>O<SUB>7</SUB>

• Ohkubo Yoshitaka

  Research Reactor Institute, Kyoto University

• Murakami Yukihiro

  Graduate School of Science, Kyoto University

• Saito Tadashi

  Radioisotope Research Center, Osaka University

• Yokoyama Akihiko

  Department of Chemistry, Faculty of Science, Kanazawa University

• Kawase Yoichi

  Research Reactor Institute, Kyoto University

Bibliographic Information

Other Title

• Perturbed-Angular-Correlation Studies on 111Cd and 117In in Pyrochlore Cd2Nb2O7

Abstract

The nuclear-electric-quadrupole interactions at ¹¹¹Cd and ¹¹⁷In nuclei arising from ^111mCd and ¹¹⁷Cd, respectively, chemically introduced in pyrochlore ferroelectric Cd₂Nb₂O₇ (T_C = 196 K) were studied using the perturbed-angular-correlation technique. At temperatures above T_C, there is one type of Cd sites. However, at liquid nitrogen temperature, below T_C, there are two types of Cd sites. The ratio of the electric quadrupole frequency of ¹¹⁷In to that of ¹¹¹Cd is anomalously deviated from a value expected from the purely ionic In and Cd ions in the same lattice environment.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 45 (7), 1998-2002, 2004

  The Japan Institute of Metals and Materials

Keywords

• cadmium pyrochlore oxides
• structural phase transition
• cadmium
• indium
• perturbed-angular-correlation technique

Details

• CRID: 1390001204251380096
• NII Article ID: 10013336242
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.45.1998
• COI: 1:CAS:528:DC%2BD2cXmvFejsr8%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 7015549
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7015549
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/45/7/45_7_1998/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed