TY - JOUR
T1 - Spectroscopic studies on the electronic and magnetic states of Co-doped perovskite manganite Pr0.8Ca0.2Mn1-yCo yO3 thin films
AU - Yoshimatsu, K.
AU - Wadati, H.
AU - Sakai, E.
AU - Harada, T.
AU - Takahashi, Y.
AU - Harano, T.
AU - Shibata, G.
AU - Ishigami, K.
AU - Kadono, T.
AU - Koide, T.
AU - Sugiyama, T.
AU - Ikenaga, E.
AU - Kumigashira, H.
AU - Lippmaa, M.
AU - Oshima, M.
AU - Fujimori, A.
PY - 2013/11/26
Y1 - 2013/11/26
N2 - We have investigated the electronic and magnetic properties of Co-doped Pr0.8Ca0.2MnO3 thin films using various spectroscopic techniques. X-ray absorption and hard x-ray photoemission spectroscopy revealed that the substituted Co ions are in the divalent state, resulting in hole doping on the Mn atoms. Studies of element-selective magnetic properties by x-ray magnetic circular dichroism found a large orbital magnetic moment for the Co ions. These spectroscopic studies reveal that the substituted Co ions play several roles of hole doping for Mn, ferromagnetic superexchange coupling between the Co2+ and Mn4+ ions, and orbital magnetism of the Co2+ ions. Competition among these complex interactions produces the unique electronic and magnetic behaviors including enhanced coercivity of the Co-doped Pr0.8Ca0.2MnO 3.
AB - We have investigated the electronic and magnetic properties of Co-doped Pr0.8Ca0.2MnO3 thin films using various spectroscopic techniques. X-ray absorption and hard x-ray photoemission spectroscopy revealed that the substituted Co ions are in the divalent state, resulting in hole doping on the Mn atoms. Studies of element-selective magnetic properties by x-ray magnetic circular dichroism found a large orbital magnetic moment for the Co ions. These spectroscopic studies reveal that the substituted Co ions play several roles of hole doping for Mn, ferromagnetic superexchange coupling between the Co2+ and Mn4+ ions, and orbital magnetism of the Co2+ ions. Competition among these complex interactions produces the unique electronic and magnetic behaviors including enhanced coercivity of the Co-doped Pr0.8Ca0.2MnO 3.
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U2 - 10.1103/PhysRevB.88.174423
DO - 10.1103/PhysRevB.88.174423
M3 - Article
AN - SCOPUS:84890416101
SN - 0163-1829
VL - 88
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 17
M1 - 174423
ER -