| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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High-Pressure and High-Temperature in situ X−Ray Diffraction Study of FeP2 up to 70 GPa |
| GU Ting-Ting1, WU Xiang1, QIN Shan1**, LIU Jing2, LI Yan-Chun2, ZHANG Yu-Feng2 |
1Key Laboratory of Orogenic Belts and Crustal Evolution (MOE), and School of Earth and Space Sciences, Peking University, Beijing 100871
2Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
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ZHANG Yu-Feng, WU Xiang, QIN Shan et al 2012 Chin. Phys. Lett. 29 026102 |
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Abstract The high-pressure and high-temperature structural behavior of FeP2 is investigated by means of synchrotron x−ray powder diffraction combined with a laser heating technique up to 70 GPa and at least 1800 K. No phase transition of FeP2 occurs up to 68 GPa at room temperature. While a new phase of FeP2 assigned to the CuAl2−type structure (I4/mcm, Z=4) is observed at 70 GPa after laser-heating. This new phase presents a quenchable property on decompression to ambient conditions. Our results update previous experimental data and are consistent with theoretical studies.
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| Keywords:
61.50.Ks
64.60.-i
74.25.-q
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Received: 28 September 2011
Published: 11 March 2012
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| PACS: |
61.50.Ks
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(Crystallographic aspects of phase transformations; pressure effects)
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64.60.-i
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(General studies of phase transitions)
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74.25.-q
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(Properties of superconductors)
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