Volume 29 Issue 1
Apr 2015
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CHEN Xi-Ping, FANG Lei-Ming, SUN Guang-Ai, PENG Fang, CHEN Bo, HE Duan-Wei, LIU Jing. Preparation and Pressure-Induced Cubic-to-Orthorhombic Phase Transition in ZrW2O8[J]. Chinese Journal of High Pressure Physics, 2015, 29(1): 59-62. doi: 10.11858/gywlxb.2015.01.010
Citation: CHEN Xi-Ping, FANG Lei-Ming, SUN Guang-Ai, PENG Fang, CHEN Bo, HE Duan-Wei, LIU Jing. Preparation and Pressure-Induced Cubic-to-Orthorhombic Phase Transition in ZrW2O8[J]. Chinese Journal of High Pressure Physics, 2015, 29(1): 59-62. doi: 10.11858/gywlxb.2015.01.010

Preparation and Pressure-Induced Cubic-to-Orthorhombic Phase Transition in ZrW2O8

doi: 10.11858/gywlxb.2015.01.010
  • Received Date: 30 Jan 2013
  • Rev Recd Date: 17 Mar 2013
  • Negative thermal expansion (NTE) ZrW2O8 powders were prepared by solid-state reaction with ZrO2 and WO3 powders.In situ high-pressure X-ray diffraction measurements for powder ZrW2O8 were performed by using a diamond anvil cell (DAC) with synchrotron radiation facility.The result shows that powder ZrW2O8 is cubic phase with a little WO3.At about 0.27 GPa and room temperature, theα-ZrW2O8 phase transforms into a quenchable orthorhombic structure called the γ phase.Upon further compression, the γ phase becomes amorphous at the pressure of 3.81 GPa.The obtained bulk modulus of α-ZrW2O8 and γ-ZrW2O8 are (40.0±3.8)GPa and (37.0±3.0)GPa.

     

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