TY - JOUR
T1 - Structure-property relationship in the ordered-perovskite-related oxide Sr3.12 Er0.88 Co4 O10.5
AU - Ishiwata, Shintaro
AU - Kobayashi, Wataru
AU - Terasaki, Ichiro
AU - Kato, Kenichi
AU - Takata, Masaki
PY - 2007/6/22
Y1 - 2007/6/22
N2 - Synchrotron x-ray-diffraction patterns were measured and analyzed for a polycrystalline sample of the room-temperature ferromagnet Sr3.12 Er0.88 Co4 O10.5 from 300 to 650 K, from which two structural phase transitions were found to occur successively. The higher-temperature transition at 509 K is driven by ordering of the oxygen vacancies, which is closely related to the metallic state at high temperatures. The lower-temperature transition at 360 K is of first order, at which the ferromagnetic state suddenly appears exhibiting a jump in magnetization and resistivity. Based on the refined structure, possible spin and orbital models for the magnetic order are proposed.
AB - Synchrotron x-ray-diffraction patterns were measured and analyzed for a polycrystalline sample of the room-temperature ferromagnet Sr3.12 Er0.88 Co4 O10.5 from 300 to 650 K, from which two structural phase transitions were found to occur successively. The higher-temperature transition at 509 K is driven by ordering of the oxygen vacancies, which is closely related to the metallic state at high temperatures. The lower-temperature transition at 360 K is of first order, at which the ferromagnetic state suddenly appears exhibiting a jump in magnetization and resistivity. Based on the refined structure, possible spin and orbital models for the magnetic order are proposed.
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U2 - 10.1103/PhysRevB.75.220406
DO - 10.1103/PhysRevB.75.220406
M3 - Article
AN - SCOPUS:34347370726
SN - 0163-1829
VL - 75
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 22
M1 - 220406
ER -