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Title: Structure-property relationship in the ordered-perovskite-related oxide Sr{sub 3.12}Er{sub 0.88}Co{sub 4}O{sub 10.5}

Abstract

Synchrotron x-ray-diffraction patterns were measured and analyzed for a polycrystalline sample of the room-temperature ferromagnet Sr{sub 3.12}Er{sub 0.88}Co{sub 4}O{sub 10.5} 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.

Authors:
; ;  [1]; ;  [2];  [3];  [4]
  1. Department of Applied Physics, Waseda University, Shinjuku, Tokyo 169-8555 (Japan)
  2. RIKEN/Spring-8 Center, Sayo, Hyogo 679-5148 (Japan)
  3. (JASRI), Sayo, Hyogo 679-5198 (Japan)
  4. (Japan)
Publication Date:
OSTI Identifier:
20951525
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 75; Journal Issue: 22; Other Information: DOI: 10.1103/PhysRevB.75.220406; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ELECTRIC CONDUCTIVITY; ERBIUM COMPOUNDS; FERROMAGNETIC MATERIALS; MAGNETIZATION; OXIDES; OXYGEN; PEROVSKITE; PHASE TRANSFORMATIONS; POLYCRYSTALS; SOLIDS; STRONTIUM COMPOUNDS; SYNCHROTRONS; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K; TRANSITION TEMPERATURE; VACANCIES; X-RAY DIFFRACTION

Citation Formats

Ishiwata, Shintaro, Kobayashi, Wataru, Terasaki, Ichiro, Kato, Kenichi, Takata, Masaki, Japan Synchrotron Radiation Research Institute, and CREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012. Structure-property relationship in the ordered-perovskite-related oxide Sr{sub 3.12}Er{sub 0.88}Co{sub 4}O{sub 10.5}. United States: N. p., 2007. Web. doi:10.1103/PHYSREVB.75.220406.
Ishiwata, Shintaro, Kobayashi, Wataru, Terasaki, Ichiro, Kato, Kenichi, Takata, Masaki, Japan Synchrotron Radiation Research Institute, & CREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012. Structure-property relationship in the ordered-perovskite-related oxide Sr{sub 3.12}Er{sub 0.88}Co{sub 4}O{sub 10.5}. United States. doi:10.1103/PHYSREVB.75.220406.
Ishiwata, Shintaro, Kobayashi, Wataru, Terasaki, Ichiro, Kato, Kenichi, Takata, Masaki, Japan Synchrotron Radiation Research Institute, and CREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012. Fri . "Structure-property relationship in the ordered-perovskite-related oxide Sr{sub 3.12}Er{sub 0.88}Co{sub 4}O{sub 10.5}". United States. doi:10.1103/PHYSREVB.75.220406.
@article{osti_20951525,
title = {Structure-property relationship in the ordered-perovskite-related oxide Sr{sub 3.12}Er{sub 0.88}Co{sub 4}O{sub 10.5}},
author = {Ishiwata, Shintaro and Kobayashi, Wataru and Terasaki, Ichiro and Kato, Kenichi and Takata, Masaki and Japan Synchrotron Radiation Research Institute and CREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012},
abstractNote = {Synchrotron x-ray-diffraction patterns were measured and analyzed for a polycrystalline sample of the room-temperature ferromagnet Sr{sub 3.12}Er{sub 0.88}Co{sub 4}O{sub 10.5} 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.},
doi = {10.1103/PHYSREVB.75.220406},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 22,
volume = 75,
place = {United States},
year = {Fri Jun 01 00:00:00 EDT 2007},
month = {Fri Jun 01 00:00:00 EDT 2007}
}