Pressure-induced structural transition of Y2Zr2O7

被引：21
作者：
Li, Hui [1 ]
Tao, Qiang [1 ]
Li, Nana [2 ]
Tang, Ruilian [2 ]
Zhao, Yongsheng [1 ]
Zhu, Hongyu [1 ]
Zhu, Pinwen [1 ]
Wang, Xin [1 ]
机构：
[1] Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R China
[2] Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 660卷
基金：
中国国家自然科学基金;
关键词：
Y2Zr2O7; Defect fluorite; High-pressure; Structural phase transition; X-RAY-DIFFRACTION; PYROCHLORE ANTIFERROMAGNET; WASTE FORM; TRANSFORMATION; PLUTONIUM; ZIRCONATE; BEHAVIOR; CRYSTAL; STATE; OXIDE;
D O I：
10.1016/j.jallcom.2015.11.137
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The structural changes of Y2Zr2O7 under high pressure have been investigated by using angle-dispersive synchrotron X-ray powder diffraction up to 34 GPa at room temperature. A new pressure-induced phase transition from cubic (Fm-3m) structure to orthorhombic (Pnma) structure at 27.3 GPa is observed, and the phase transition is irreversible. The high-pressure orthorhombic (Pnma) phase has longer average cation-anion bonding distance than cubic (Fm-3m) structure which was proved by the increase of coordination number. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：446 / 449
页数：4
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