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Title: Hyperfine Interactions of {sup 57}Fe Nuclei in ScCo{sub 1–x}Fe{sub x}O{sub 3} (x = 0.05, 0.4) Substituted Cobaltites

Abstract

The Mössbauer study of {sup 57}Fe nuclei in Sc{sub 1–y}Co{sub 1–x}Fe{sub x}O{sub 3–3/2y} (x = 0.05, 0.4; y = 0.1, 0.2) cobaltites has been reported. Mössbauer spectra, as well as calculations of the parameters of the electric field gradient tensor, have shown that Fe{sup 3+} cations not only occupy characteristic for them positions with octahedral oxygen coordination, but also partially substitute Sc{sup 3+} cations in ScO{sub n} polyhedra with a large coordination number (n = 8–12). The character of distribution of iron cations over two positions depends on the composition of studied cobaltites. In contrast to Co{sup 3+} cations, Fe{sup 3+} cations in both positions are stabilized in a highspin state (S = 5/2). The analysis of the magnetic hyperfine structure of {sup 57}Fe spectra measured at T < T{sub N} has shown that magnetically ordered iron-rich microclusters can be formed in the octahedral sublattice of the Sc{sub 0.9}Co{sub 0.6}Fe{sub 0.4}O{sub 2.85} and Sc{sub 0.8}Co{sub 0.6}Fe{sub 0.4}O{sub 2.7} cobaltites. The most fraction of iron in Sc{sub 0.9}Co{sub 0.95}{sup 57}Fe{sub 0.05}O{sub 2.85} remains in the paramagnetic state down to the lowest temperatures.

Authors:
;  [1]; ;  [2];  [1]
  1. Moscow State University (Russian Federation)
  2. National Institute for Materials Science (NIMS), Research Center for Functional Materials (Japan)
Publication Date:
OSTI Identifier:
22749899
Resource Type:
Journal Article
Journal Name:
Journal of Experimental and Theoretical Physics
Additional Journal Information:
Journal Volume: 126; Journal Issue: 4; Other Information: Copyright (c) 2018 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7761
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CATIONS; COBALT IONS; ELECTRIC FIELDS; IRON 57; IRON IONS; QUANTUM MECHANICS; TEMPERATURE RANGE 0065-0273 K

Citation Formats

Glazkova, I. S., E-mail: janglaz@bk.ru, Sobolev, A. V., Yi, W., Belik, A. A., and Presniakov, I. A.. Hyperfine Interactions of {sup 57}Fe Nuclei in ScCo{sub 1–x}Fe{sub x}O{sub 3} (x = 0.05, 0.4) Substituted Cobaltites. United States: N. p., 2018. Web. doi:10.1134/S1063776118030135.
Glazkova, I. S., E-mail: janglaz@bk.ru, Sobolev, A. V., Yi, W., Belik, A. A., & Presniakov, I. A.. Hyperfine Interactions of {sup 57}Fe Nuclei in ScCo{sub 1–x}Fe{sub x}O{sub 3} (x = 0.05, 0.4) Substituted Cobaltites. United States. doi:10.1134/S1063776118030135.
Glazkova, I. S., E-mail: janglaz@bk.ru, Sobolev, A. V., Yi, W., Belik, A. A., and Presniakov, I. A.. Sun . "Hyperfine Interactions of {sup 57}Fe Nuclei in ScCo{sub 1–x}Fe{sub x}O{sub 3} (x = 0.05, 0.4) Substituted Cobaltites". United States. doi:10.1134/S1063776118030135.
@article{osti_22749899,
title = {Hyperfine Interactions of {sup 57}Fe Nuclei in ScCo{sub 1–x}Fe{sub x}O{sub 3} (x = 0.05, 0.4) Substituted Cobaltites},
author = {Glazkova, I. S., E-mail: janglaz@bk.ru and Sobolev, A. V. and Yi, W. and Belik, A. A. and Presniakov, I. A.},
abstractNote = {The Mössbauer study of {sup 57}Fe nuclei in Sc{sub 1–y}Co{sub 1–x}Fe{sub x}O{sub 3–3/2y} (x = 0.05, 0.4; y = 0.1, 0.2) cobaltites has been reported. Mössbauer spectra, as well as calculations of the parameters of the electric field gradient tensor, have shown that Fe{sup 3+} cations not only occupy characteristic for them positions with octahedral oxygen coordination, but also partially substitute Sc{sup 3+} cations in ScO{sub n} polyhedra with a large coordination number (n = 8–12). The character of distribution of iron cations over two positions depends on the composition of studied cobaltites. In contrast to Co{sup 3+} cations, Fe{sup 3+} cations in both positions are stabilized in a highspin state (S = 5/2). The analysis of the magnetic hyperfine structure of {sup 57}Fe spectra measured at T < T{sub N} has shown that magnetically ordered iron-rich microclusters can be formed in the octahedral sublattice of the Sc{sub 0.9}Co{sub 0.6}Fe{sub 0.4}O{sub 2.85} and Sc{sub 0.8}Co{sub 0.6}Fe{sub 0.4}O{sub 2.7} cobaltites. The most fraction of iron in Sc{sub 0.9}Co{sub 0.95}{sup 57}Fe{sub 0.05}O{sub 2.85} remains in the paramagnetic state down to the lowest temperatures.},
doi = {10.1134/S1063776118030135},
journal = {Journal of Experimental and Theoretical Physics},
issn = {1063-7761},
number = 4,
volume = 126,
place = {United States},
year = {2018},
month = {4}
}