High-Pressure and -Temperature Synthesis and its XPS Study of La1-xNaxTiO3.

• MIAO Ji-Peng

  Department of Physics, Jilin University

• LI Li-Ping

  Department of Physics, Jilin University

• LU Da-Yong

  Department of Physics, Jilin University

• LIU Hong-Jian

  Department of Physics, Jilin University

• SU Wen-Hui

  Department of Physics, Jilin University International Center for Materials Physics

Bibliographic Information

Other Title

• High-Pressure and Temperature Synthesis

Abstract

Perovskite oxides of La_1-xNa_xTiO₃ (x=0. 05, 0. 1-0. 5) were synthesized under high-pressure and -temperature. XRD analysis showed that sample is cubic for x=0. 05 and pseudo-cubic for 0. 1≤x≤0. 5. Cell volumes of samples with 0. 1≤x≤0. 5 decrease as x increase, and the cell volume for x=0. 05 is less than that for x=0. 1. This implies that the deficiency of cation may exist in the samples. XPS and EPR measurements indicated that Ti ions were mixed valence of +3 and +4 and vacancy of A-site ions existed in samples. The valence state of Ti ions can be altered by high-pressure and -temperature.

Journal

• The Review of High Pressure Science and Technology

  The Review of High Pressure Science and Technology 7 1031-1033, 1998

  The Japan Society of High Pressure Science and Technology

Keywords

• high-pressure and -temperature synthesis
• phase transition
• XPS
• EPR
• mixed valence

Details

• CRID: 1390282679359157120
• NII Article ID: 10002692672
• NII Book ID: AN10452913
• DOI: 10.4131/jshpreview.7.1031
• ISSN: 13481940
• ISSN: 0917639X
• NDL BIB ID: 4494137
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4494137
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed