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

页码：446 / 449

页数：4

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