High-pressure structures of α- and δ-ZrMo₂O₈

Summary, in English

In situ high-pressure synchrotron X-ray powder diffraction studies of trigonal α-ZrMo₂O₈, zirconium molybdate, have been performed from ambient conditions to 1.9 GPa, over the α-δ phase transition at 1.06-1.11 GPa. The monoclinic structure of δ-ZrMo₂O₈, stable between 1.1 and 2.5 GPa at 298 K, has been solved by direct methods and refined using the Rietveld method. Significant distortions of the ZrO₆ and MoO₄ polyhedral elements are observed for δ-ZrMo₂O₈, as compared to the ambient conditions of the α-phase, while the packing of anions becomes more symmetric at high pressure.

• Författare: Anne Marie Krogh Andersen; Stefan Carlson
• Avdelning/ar: MAX IV-laboratoriet
• Publiceringsår: 2001-02
• Språk: Engelska
• Sidor: 20-26
• Publikation/Tidskrift/Serie: Acta Crystallographica. Section B: Structural Science
• Volym: 57
• Issue: 1
• Länkar: http://dx.doi.org/10.1107/S0108768100013215
• Dokumenttyp: Artikel i tidskrift
• Förlag: Wiley-Blackwell
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 0108-7681