›› 2015, Vol. 24 ›› Issue (1): 17503-017503.doi: 10.1088/1674-1056/24/1/017503

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

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

潘跃武a, 朱品文b, 王欣b   

  1. 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
  • 收稿日期:2014-07-19 修回日期:2014-09-22 出版日期:2015-01-05 发布日期:2015-01-05
  • 基金资助:
    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).

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   

  1. 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
  • Received:2014-07-19 Revised:2014-09-22 Online:2015-01-05 Published:2015-01-05
  • Contact: Wang Xin E-mail:xin_wang@jlu.edu.cn
  • Supported by:
    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).

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 B0 was determined to be 163(2) GPa by fitting the pressure-volume data to the Birch-Murnaghan equation of state.

关键词: double perovskite oxide, electric properties, high pressure

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.

Key words: double perovskite oxide, electric properties, high pressure

中图分类号:  (Magnetic oxides)

  • 75.47.Lx
61.05.cp (X-ray diffraction) 64.60.-i (General studies of phase transitions)