CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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High-pressure synthesis, characterization, and equation of state of double perovskite Sr2CoFeO6 |
Pan Yue-Wu (潘跃武)a, Zhu Pin-Wen (朱品文)b, Wang Xin (王欣)b |
a Mathematics and Physical Sciences Technology, Xuzhou Institute of Technology, Xuzhou 221018, China; b State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China |
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Abstract Double perovskite oxide Sr2CoFeO6 (SCFO) has been obtained using a high-pressure and high-temperature (HPHT) synthesis method. Valence states of Fe and Co and their distributions in SCFO were examined with X-ray photoelectron spectroscopy. The electric transport behavior of SCFO showed a semiconductor behavior that can be well described by Mott's law for variable-range hopping conduction. The structural stability of SCFO was investigated at pressures up to 31 GPa with no pressure-induced phase transition found. Bulk modulus B0 was determined to be 163(2) GPa by fitting the pressure-volume data to the Birch-Murnaghan equation of state.
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Received: 19 July 2014
Revised: 22 September 2014
Accepted manuscript online:
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PACS:
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75.47.Lx
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(Magnetic oxides)
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61.05.cp
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(X-ray diffraction)
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64.60.-i
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(General studies of phase transitions)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 51172194 and 51172091), the Program for New Century Excellent Talents in University, China (Grant No. NCET-12-0240), and Jilin Province Science and Technology Development Program, China (Grant No. 20130101023JC). |
Corresponding Authors:
Wang Xin
E-mail: xin_wang@jlu.edu.cn
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Cite this article:
Pan Yue-Wu (潘跃武), Zhu Pin-Wen (朱品文), Wang Xin (王欣) High-pressure synthesis, characterization, and equation of state of double perovskite Sr2CoFeO6 2015 Chin. Phys. B 24 017503
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