Exploring the phase transition of BiNbO4: A high pressure x-ray diffraction study

被引：9

作者：

Liu, Yinjuan ^{[1
,2
]}

Xu, Chao ^{[1
,2
]}

He, Duanwei ^{[1
,2
]}

Zhang, Jiawei ^{[1
,2
]}

Hu, Qiwei ^{[1
,2
]}

Qi, Lei ^{[1
,2
]}

机构：

[1] Sichuan Univ, Inst Atom & Mol Phys, Chengdu 610065, Sichuan, Peoples R China

[2] Sichuan Univ, Key Lab High Energy Dens Phys & Technol, Minist Educ, Chengdu 610065, Sichuan, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2017年 / 265卷

关键词：

BiNbO4; In-situ x-ray diffraction; Phase transition; High pressure; CRYSTAL-STRUCTURE; CERAMICS; PHOTOCATALYSIS; TEMPERATURE; BITAO4;

D O I：

10.1016/j.ssc.2017.07.019

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In the present work, the orthorhombic (a) BiNbO4 have been investigated with the in-situ angle-dispersive x-ray diffraction (ADXRD) measurements under high pressure. Pressure-induced phase transition was observed in alpha-BiNbO-4, and compressibility of the unit cell axes (a, b and c axes) of alpha-BiNbO4 shows an anisotropic with pressure increasing. The phase transition routine and the effect of pressure in the phase evolution of BiNbO4 were also explored. The results indicate that pressure-induced phase transition is reversible, in contrast, pressure and temperature-induced phase transition is irreversible in system of BiNbO4, but the phase remains stable without pressure. High pressure plays a critical role and provides a driving force for phase transition of BiNbO4.

引用

页码：15 / 18

页数：4

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