TY - JOUR
T1 - Effect of offstoichiometry on the physical properties of Sr2VO4
AU - Ueno, Takashi
AU - Kim, Jungeun
AU - Takata, Masaki
AU - Katsufuji, Takuro
N1 - Funding Information:
We thank T. Mino for his help with the in-house X-ray diffraction measurement. This work was partly supported by a Grant-in-Aid for Scientific Research B (21340105) from the Japan Society for the Promotion of Science. The synchrotron radiation experiments were performed at BL02B2 in SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal No. 2012B1151).
Publisher Copyright:
©2014 The Physical Society of Japan.
PY - 2014/3/15
Y1 - 2014/3/15
N2 - We studied the physical properties of Sr2 VO4 with a K2 NiF4 structure in polycrystalline forms synthesized under various different conditions. We found that stoichiometric samples or those with nominal hole doping into the d1 state of the V ion exhibit insulating behavior with an antiferromagnetic interaction between V moments, whereas those with nominal electron doping exhibit metallic conduction and ferromagnetic interaction. A structural phase transition at Tc ∼ 100 K, which is likely to be associated with the orbital ordering of the V4+ ion, is observed only in the former sample exhibiting a sharp drop in the magnetic susceptibility at the same temperature, whereas no structural anomaly was observed for the sample exhibiting a cusp in the magnetic susceptibility at ∼50 K.
AB - We studied the physical properties of Sr2 VO4 with a K2 NiF4 structure in polycrystalline forms synthesized under various different conditions. We found that stoichiometric samples or those with nominal hole doping into the d1 state of the V ion exhibit insulating behavior with an antiferromagnetic interaction between V moments, whereas those with nominal electron doping exhibit metallic conduction and ferromagnetic interaction. A structural phase transition at Tc ∼ 100 K, which is likely to be associated with the orbital ordering of the V4+ ion, is observed only in the former sample exhibiting a sharp drop in the magnetic susceptibility at the same temperature, whereas no structural anomaly was observed for the sample exhibiting a cusp in the magnetic susceptibility at ∼50 K.
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U2 - 10.7566/JPSJ.83.034708
DO - 10.7566/JPSJ.83.034708
M3 - Article
AN - SCOPUS:84988485769
SN - 0031-9015
VL - 83
JO - journal of the physical society of japan
JF - journal of the physical society of japan
IS - 3
M1 - 034708
ER -