TY - JOUR
T1 - Self-doping effect and successive magnetic transitions in superconducting Sr2 VFeAsO3
AU - Cao, Guang Han
AU - Ma, Zhifeng
AU - Wang, Cao
AU - Sun, Yunlei
AU - Bao, Jinke
AU - Jiang, Shuai
AU - Luo, Yongkang
AU - Feng, Chunmu
AU - Zhou, Yi
AU - Xie, Zhi
AU - Hu, Fengchun
AU - Wei, Shiqiang
AU - Nowik, I.
AU - Felner, I.
AU - Zhang, Lei
AU - Xu, Zhu'An
AU - Zhang, Fu Chun
PY - 2010/9/22
Y1 - 2010/9/22
N2 - We have studied a quinary Fe-based superconductor Sr2 VFeAsO3 by the measurements of x-ray diffraction, x-ray absorption, Mössbauer spectrum, resistivity, magnetization, and specific heat. This apparently undoped oxyarsenide is shown to be self-doped via electron transfer from the V3+ ions. We observed successive magnetic transitions within the VO2 layers: an antiferromagnetic transition at 150 K followed by a weak ferromagnetic transition at 55 K. The spin orderings within the VO 2 planes are discussed based on mixed valence of V3+ and V4+.
AB - We have studied a quinary Fe-based superconductor Sr2 VFeAsO3 by the measurements of x-ray diffraction, x-ray absorption, Mössbauer spectrum, resistivity, magnetization, and specific heat. This apparently undoped oxyarsenide is shown to be self-doped via electron transfer from the V3+ ions. We observed successive magnetic transitions within the VO2 layers: an antiferromagnetic transition at 150 K followed by a weak ferromagnetic transition at 55 K. The spin orderings within the VO 2 planes are discussed based on mixed valence of V3+ and V4+.
UR - https://www.scopus.com/pages/publications/77957601390
U2 - 10.1103/PhysRevB.82.104518
DO - 10.1103/PhysRevB.82.104518
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AN - SCOPUS:77957601390
SN - 1098-0121
VL - 82
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 10
M1 - 104518
ER -