高压物理学报Issue(1)：59-62,4.DOI:10.11858/gywlxb.2015.01.010
钨酸锆制备与高压下的相变研究
Preparation and Pressure-Induced Cubic-to-Orthorhombic Phase Transition in ZrW2 O8
摘要
Abstract
Negative thermal expansion (NTE)ZrW2 O8 powders were prepared by solid-state reaction with ZrO2 and WO3 powders.In situ high-pressure X-ray diffraction measurements for powder ZrW2 O8 were performed by using a diamond anvil cell (DAC)with synchrotron radiation facility.The result shows that powder ZrW2 O8 is cubic phase with a little WO3 .At about 0.27 GPa and room temperature,theα-ZrW2 O8 phase transforms into a quenchable orthorhombic structure called theγphase.Upon further compression,theγphase becomes amorphous at the pressure of 3.81 GPa.The obtained bulk modulus ofα-ZrW2 O8 andγ-ZrW2 O8 are (40.0±3.8)GPa and (37.0±3.0)GPa.关键词
钨酸锆(ZrW2 O8 )/负热膨胀/高压相变/同步辐射/体弹模量Key words
zirconium tungstate(ZrW2 O8 )/negative thermal expansion/high pressure phase transform/synchrotron radiation/bulk modulus分类
数理科学引用本文复制引用
陈喜平,房雷鸣,孙光爱,彭放,陈波,贺端威,刘景..钨酸锆制备与高压下的相变研究[J].高压物理学报,2015,(1):59-62,4.基金项目
国家自然科学基金（91126001，11105128）；中国工程物理研究院科学技术发展基金（2010A0103002）；国家自然科学基金委员会-中国工程物理研究院 NSAF联合基金 （）
