High-pressure synthesis, characterization, and equation of state of double perovskite Sr2CoFeO6

Double perovskite oxide Sr2 Co Fe O6（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 semiconduct...

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Bibliographic Details
Published in:中国物理B：英文版 2015 (1), p.489-492
Main Author: 潘跃武 朱品文 王欣
Format: Article
Language:English
Subjects:
X射线光电子能谱
体积模量
压力诱导相变
双钙钛矿
状态方程
表征
钙钛矿氧化物
高压合成
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Summary:Double perovskite oxide Sr2 Co Fe O6（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.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/24/1/017503