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Title: Magnetic Ordering in Sr3YCo4O10+x

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep19762· OSTI ID:1239752
 [1];  [2];  [3];  [3];  [2];  [4];  [3]
  1. Asahi Kasei Corporation, Fuji, Shizuoka (Japan). Department of Technology Group, Analysis & Simulation Center
  2. Vanderbilt Univ., Nashville, TN (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. National University of Singapore, (Singapore). Department of Materials Science and Engineering

Transition-metal oxides often exhibit complex magnetic behavior due to the strong interplay between atomic-structure, electronic and magnetic degrees of freedom. Cobaltates, especially, exhibit complex behavior because of cobalt's ability to adopt various valence and spin state configurations. The case of the oxygen-deficient perovskite Sr3YCo4O10+x (SYCO) has attracted considerable attention because of persisting uncertainties about its structure and the origin of the observed room temperature ferromagnetism. Here we report a combined investigation of SYCO using aberration-corrected scanning transmission electron microscopy and density functional theory calculations. Guided by theoretical results on Co-O distances projected on different planes, the atomic-scale images of several different orientations, especially of the fully oxygenated planes, allow the unambiguous extraction of the underlying structure. The calculated magnetic properties of the new structure are in excellent agreement with the experimental data.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Vanderbilt Univ., Nashville, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725; FG02- 09ER46554; AC02-05CH11231; FG02-09ER46554
OSTI ID:
1239752
Alternate ID(s):
OSTI ID: 1597737
Journal Information:
Scientific Reports, Vol. 6; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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Orbital Ordering of Intermediate-Spin State of Co 3+ in Sr 3 YCo 4 O 10.5 journal February 2011
Complex room-temperature ferrimagnetism induced by zigzag stripes of oxygen vacancies in Sr 3 YCo 4 O 10 + δ journal April 2011
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Cited By (3)

Spin states of Co 3+ ions in Sr 0.75 Y 0.25 CoO 2.625 system induced by Jahn-Teller distortion: a density-functional study journal August 2018
Ferromagnet-antiferromagnet transition in layered perovskites of Sr 3 YCo 4 O 10.5 type journal November 2018
Room-Temperature Ferromagnetic Sr3YCo4O10+δ and Carbon Black-Reinforced Polyvinylidenefluoride Composites toward High-Performance Electromagnetic Interference Shielding journal May 2019

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