Comparison of the High Pressure Structures of Spinel Single Crystals with Composition Mg0.4Al2.4O4 and ZnCr2S4.

• Wittlinger J.

  Institut für Kristallographie und Angewandte Mineralogie der Universität München

• Werner S.

  Institut für Kristallographie und Angewandte Mineralogie der Universität München

• Schulz H.

  Institut für Kristallographie und Angewandte Mineralogie der Universität München

Bibliographic Information

Other Title

• Comparison of the High Pressure Structu

Abstract

The present study deals with single crystal structure investigations of Mg _{0. 4}Al_{2. 4}O₄ and ZnCr₂S₄ by means of X ray scattering. The compressibility of the oxide substance is very small, whereas the structural changes are surprisingly high. In contrast, the compressibility of the thiospinel is 3 times higher, but the structural changes are very small. The transition to a non-detectable high pressure phase of Mg_{0. 4}Al_{2. 4}O₄ turns out to be reversible considering the existence of a spinel single crystal, but not reversible concerning the values of the lattice constant and the positional parameter of the oxygen anion. This can be explained by pressure induced disordering of the cations, which is preserved on abrupt pressure decrease.

Journal

• The Review of High Pressure Science and Technology

  The Review of High Pressure Science and Technology 7 49-54, 1998

  The Japan Society of High Pressure Science and Technology

Keywords

• single crystal
• spinel
• phase transition
• high pressure

Details

• CRID: 1390001204381476992
• NII Article ID: 10002688710
• NII Book ID: AN10452913
• DOI: 10.4131/jshpreview.7.49
• ISSN: 13481940
• ISSN: 0917639X
• NDL BIB ID: 4493833
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4493833
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed