Magnetic Ordering in Sr3YCo4O10+x
- Asahi Kasei Corporation, Fuji, Shizuoka (Japan). Department of Technology Group, Analysis & Simulation Center
- Vanderbilt Univ., Nashville, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- 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
Web of Science
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
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journal | August 2018 |
Ferromagnet-antiferromagnet transition in layered perovskites of Sr 3 YCo 4 O 10.5 type
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journal | November 2018 |
Room-Temperature Ferromagnetic Sr3YCo4O10+δ and Carbon Black-Reinforced Polyvinylidenefluoride Composites toward High-Performance Electromagnetic Interference Shielding
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journal | May 2019 |
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