中国物理B ›› 2017, Vol. 26 ›› Issue (11): 116202-116202.doi: 10.1088/1674-1056/26/11/116202

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Exploring the compression behavior of HP-BiNbO4 under high pressure

Yin-Juan Liu(刘银娟), Jia-Wei Zhang(张佳威), Duan-Wei He(贺端威), Chao Xu(许超), Qi-Wei Hu(胡启威), Lei Qi(戚磊), A-Kun Liang(梁阿坤)   

  1. 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
  • 收稿日期:2017-05-22 修回日期:2017-08-13 出版日期:2017-11-05 发布日期:2017-11-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51472171 and 11427810) and the Chinese Academy of Sciences (Grant Nos. KJCX2-SW-NO3 and KJCX2-SW-N20).

Exploring the compression behavior of HP-BiNbO4 under high pressure

Yin-Juan Liu(刘银娟)1,2, Jia-Wei Zhang(张佳威)1,2, Duan-Wei He(贺端威)1,2, Chao Xu(许超)1,2, Qi-Wei Hu(胡启威)1,2, Lei Qi(戚磊)1,2, A-Kun Liang(梁阿坤)1,2   

  1. 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
  • Received:2017-05-22 Revised:2017-08-13 Online:2017-11-05 Published:2017-11-05
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51472171 and 11427810) and the Chinese Academy of Sciences (Grant Nos. KJCX2-SW-NO3 and KJCX2-SW-N20).

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摘要： 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.

关键词: high pressure, BiNbO4, x-ray diffraction, bulk modulus

Abstract: 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.

Key words: high pressure, BiNbO4, x-ray diffraction, bulk modulus

中图分类号:  (High-pressure effects in solids and liquids)

  • 62.50.-p
61.05.cp (X-ray diffraction) 61.50.Ks (Crystallographic aspects of phase transformations; pressure effects) 81.05.Je (Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides))