Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (4): 545-548.doi: 10.1007/s40242-016-5469-z

• Articles • Previous Articles     Next Articles

High-pressure, High-temperature Synthesis and Properties of the Monoclinic Phase of Y2O3

ZHANG Qian1, WU Xiang2,3, OVSYANNIKOV V. Sergey4, DONG Juncai5, QIN Shan3, DUBROVINSKY S. Leonid4, CHEN Dongliang5   

  1. 1. Gemological Institute, China University of Geosciences, Wuhan 430074, P. R. China;
    2. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, P. R. China;
    3. Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education & School of Earth and Space Sciences, Peking University, Beijing 100871, P. R. China;
    4. Bayerisches Geoinstitut, Universität Bayreuth, Bayreuth D-95447, Germany;
    5. Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy ofSciences, Beijing 100049, P. R. China
  • Received:2015-12-04 Revised:2016-03-02 Online:2016-08-01 Published:2016-04-20
  • Contact: WU Xiang E-mail:xiang.wu@pku.edu.cn
  • Supported by:

    Supported by the National Natural Science foundation of China(Nos.U1232204, 41473056).

Abstract:

The monoclinic phase of Y2O3(B-RES) has been synthesized using a Kawai-type multi-anvil apparatus under 20 GPa at 1800 ℃. Samples of the cubic Y2O3(C-RES) and monoclinic Y2O3 phases were characterized by synchrotron radiation X-ray diffraction, X-ray absorption near edge structure and Raman spectroscopy. Crystal structures of the cubic and monoclinic phases have been examined using Rietveld refinement of the X-ray diffraction data. The cubic-to-monoclinic transition of Y2O3 was reconstructive and irreversible. The X-ray diffraction results were further confirmed by simulation of the X-ray absorption spectra.

Key words: Y2O3, High pressure, Multi-anvil synthesis