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

被引：7
|
作者：
Pan Yue-Wu [1 ]
Zhu Pin-Wen [2 ]
Wang Xin [2 ]
机构：
[1] Xuzhou Inst Technol, Math & Phys Sci Technol, Xuzhou 221018, Peoples R China
[2] Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R China
来源：
CHINESE PHYSICS B | 2015年 / 24卷 / 01期
基金：
中国国家自然科学基金;
关键词：
double perovskite oxide; electric properties; high pressure; ORDERED DOUBLE-PEROVSKITE; MIXED-VALENCE MANGANITES; MAGNETIC-PROPERTIES; NI; CRYSTAL; OXIDE; CO; MAGNETORESISTANCE; LOCALIZATION; DIFFRACTION;
D O I：
10.1088/1674-1056/24/1/017503
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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 B-0 was determined to be 163(2) GPa by fitting the pressure-volume data to the Birch-Murnaghan equation of state.
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页数：4
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