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EXAFS and X-Ray Diffraction Study of LaCoO3 Across the Spin-State Transition Full article

Common Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Conference 16th International Conference on X-ray Absorption Fine Structure
23-28 Aug 2015 , Karlsruhe
Journal Journal of Physics: Conference Series
ISSN: 1742-6588 , E-ISSN: 1742-6596
Output data Year: 2016, Volume: 712, Pages: 012118 Pages count : 4 DOI: 10.1088/1742-6596/712/1/012118
Authors Sikolenko V.V. 1,9 , Troyanchuk I.O. 2 , Efimov V.V. 1 , Efimova E.A. 1 , Tiutiunnikov S.I. 1 , Karpinsky D.V. 2 , Pascarelli S. 3 , Zaharko O. 4 , Ignatov A. 5 , Aquilanti D. 6 , Selyutin A.G. 7 , Shmakov A.N. 7 , Prabhakaran D. 8
Affiliations
1 Joint Institute for Nuclear Research, 141980 Dubna, Russia
2 Scientific-Practical Material Research Center NAS Belarus, 220072 Minsk, Belarus
3 European Synchrotron Radiation Facility, BP 220, 38043 Grenoble, France
4 Paul Scherrer Institute, Laboratory for Neutron Scattering and Imaging, CH-5232 Villigen PSI, Switzerland
5 Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
6 Elettra synchrotron Trieste, 34149 Trieste, Italy
7 Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia
8 Department of Physics, University of Oxford, OX1 3PU, Oxford, Great Britain
9 REC "Functional nanomaterials" Immanuel Kant Baltic Federal University, 236041 Kaliningrad, Russia

Funding (2)

1 Russian Foundation for Basic Research 13-02-00699
2 Russian Foundation for Basic Research 15-32-50378

Abstract: A combined high-resolution Co K-edge extended x-ray absorption fine structure (EXAFS) and high-resolution X-ray powder diffraction (XRD) study has been performed to clarify the detail of anomalous behavior of temperature-dependent magnetic susceptibility curve on the LaCoO3 across the spin-state (~120 K) transition. According to XRD analysis, the Debye-Waller factor of Co-O bond exhibit rapid growth below 20 K whereas the temperature dependence of the average Co-O bond length shows linear behavior from 10 K to 400 K. The EXAFS data show an anomalous decrease of the Co–O bond lengths with respect to those obtained by XRD. No local distortion of CoO6 octahedral as temperature increases up to 400 K has been detected.
Cite: Sikolenko V.V. , Troyanchuk I.O. , Efimov V.V. , Efimova E.A. , Tiutiunnikov S.I. , Karpinsky D.V. , Pascarelli S. , Zaharko O. , Ignatov A. , Aquilanti D. , Selyutin A.G. , Shmakov A.N. , Prabhakaran D.
EXAFS and X-Ray Diffraction Study of LaCoO3 Across the Spin-State Transition
Journal of Physics: Conference Series. 2016. V.712. P.012118. DOI: 10.1088/1742-6596/712/1/012118 WOS Scopus РИНЦ
Files: Full text from publisher
Dates:
Published print: May 1, 2016
Published online: Jun 1, 2016
Identifiers:
Web of science WOS:000383249000119
Scopus 2-s2.0-84978646284
Elibrary 27070543
AN 2017:633852
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