EXAFS and X-Ray Diffraction Study of LaCoO3 Across the Spin-State Transition | Sciact - CRIS-system of Boreskov Institute of Catalysis

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

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, Article number : 012118, Pages count : 4 DOI: 10.1088/1742-6596/712/1/012118

Tags

Atomic physics; Bond length; Cobalt compounds; Curve fitting; Extended X ray absorption fine structure spectroscopy; Magnetic susceptibility; Spin dynamics; Temperature distribution; X ray diffraction; X ray powder diffraction

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

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.

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. 012118 :1-4. DOI: 10.1088/1742-6596/712/1/012118 WOS Scopus РИНЦ AN OpenAlex

Full text from publisher

Published print:	May 1, 2016
Published online:	Jun 1, 2016

Web of science:	WOS:000383249000119
Scopus:	2-s2.0-84978646284
Elibrary:	27070543
Chemical Abstracts:	2017:633852
OpenAlex:	W2524057457

DB	Citing
Web of science	6
Scopus	6
Elibrary	5
OpenAlex	3