Exploring the compression behavior of HP-BiNbO4 under high pressure

In the present work, a third form, the so-called HP-BiNbO4 synthesized at high pressure and high temperature is investigated with the in-situ angle-dispersive x-ray diffraction（ADXRD） measurements under high pressure. We explore the compression behavior and phase stability of HP-BiNbO4. The structur...

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Published in中国物理B：英文版 Vol. 26; no. 11; pp. 389 - 392
Main Author 刘银娟;张佳威;贺端威;许超;胡启威;戚磊;梁阿坤
Format Journal Article
LanguageEnglish
Published 01.11.2017
Subjects
X射线衍射
体积模量
化合物相
压力导数
压缩行为
相稳定性
高压力
高温高压
Online AccessGet full text
ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/26/11/116202

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Summary:In the present work, a third form, the so-called HP-BiNbO4 synthesized at high pressure and high temperature is investigated with the in-situ angle-dispersive x-ray diffraction（ADXRD） measurements under high pressure. We explore the compression behavior and phase stability of HP-BiNbO4. The structure of HP-BiNbO4 is first determined. The x-ray diffraction data reveal that the structure HP-BiNbO4 is stable under pressures up to 24.1 GPa. The ADXRD data yield a bulk modulus Ko = 185（7） GPa with a pressure derivative Ko＇= 2.9（0.8）. Furthermore, the data are compared with those of other ABO4 compounds. The results show that the bulk modulus of HP-BiNbO4（about 185 GPa） is slightly higher than that of tetragonal BiVO4 and significantly greater than those of the tungstates and molybdates.
Bibliography:In the present work, a third form, the so-called HP-BiNbO4 synthesized at high pressure and high temperature is investigated with the in-situ angle-dispersive x-ray diffraction（ADXRD） measurements under high pressure. We explore the compression behavior and phase stability of HP-BiNbO4. The structure of HP-BiNbO4 is first determined. The x-ray diffraction data reveal that the structure HP-BiNbO4 is stable under pressures up to 24.1 GPa. The ADXRD data yield a bulk modulus Ko = 185（7） GPa with a pressure derivative Ko＇= 2.9（0.8）. Furthermore, the data are compared with those of other ABO4 compounds. The results show that the bulk modulus of HP-BiNbO4（about 185 GPa） is slightly higher than that of tetragonal BiVO4 and significantly greater than those of the tungstates and molybdates.
Yin-Juan Liu1,2, Jia-Wei Zhang1,2, Duan-Wei He1,2, Chao Xu1,2, Qi-Wei Hu1,2, Lei Qi1,2,A-Kun Liang1,2（ 1 Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China ;2 Key Laboratory of High Energy Density Physics and Technology of Ministry of Education, Sichuan University, Chengdu 610065, China）
11-5639/O4
high pressure BiNbO4 x-ray diffraction bulk modulus
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/26/11/116202