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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. 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 |
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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.
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Received: 22 May 2017
Revised: 13 August 2017
Accepted manuscript online:
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PACS:
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62.50.-p
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(High-pressure effects in solids and liquids)
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61.05.cp
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(X-ray diffraction)
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61.50.Ks
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(Crystallographic aspects of phase transformations; pressure effects)
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81.05.Je
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(Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides))
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Fund: 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). |
Cite this article:
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) Exploring the compression behavior of HP-BiNbO4 under high pressure 2017 Chin. Phys. B 26 116202
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