Influence of barium and strontium atoms on magnetic properties of iron-containing solid solutions Bi2MNb2O9 (M – Ba, Sr)

N. A. Zhuk, N. V. Chezhina, V. A. Belyy, B. A. Makeev, A. S. Miroshnichenko, D. S. Beznosikov, S. V. Nekipelov, V. N. Sivkov, Maria V. Yermolina

Research output: Contribution to journalArticle

Abstract

Magnetic dilution and NEXAFS spectroscopy were used in the study of iron-containing solid solutions Bi2MNb2O9 (M – Ba, Sr) with layered perovskite-like structure. The analysis of the NEXAFS Fe2p-spectra of iron-containing solid solutions and iron oxides revealed that the studied Fe atoms were mainly in the +3 oxidation state. The study of magnetic susceptibility of the Bi2Ba(Sr)Nb2−2xFe2xO9−δ solid solutions showed the influence of atoms of the second coordination sphere on the distribution, degree of clustering, and intensity of exchange interactions in clusters of iron atoms. It was established that iron (III) atoms exhibited selectivity in filling the cation positions, preferring less distorted octahedral positions. The substitution of barium with strontium atoms led to intensification of the exchange of the ferromagnetic type and to a decrease in the degree of clustering of iron atoms in the solid solutions Bi2SrNb2−2xFe2xO9−δ.

LanguageEnglish (US)
Pages574-579
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume469
DOIs
StatePublished - Jan 1 2019

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X ray absorption near edge structure spectroscopy
Ferroelectric ceramics
Strontium
Magnetism
Barium
Magnetic susceptibility
Solid solutions
Magnetic properties
Iron
Atoms
Exchange interactions
Dilution
ferric oxide
perovskite
Cations
Ion exchange
Substitution reactions
Oxidation

Keywords

  • Ferroelectric ceramics
  • Iron
  • Magnetic properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Influence of barium and strontium atoms on magnetic properties of iron-containing solid solutions Bi2MNb2O9 (M – Ba, Sr). / Zhuk, N. A.; Chezhina, N. V.; Belyy, V. A.; Makeev, B. A.; Miroshnichenko, A. S.; Beznosikov, D. S.; Nekipelov, S. V.; Sivkov, V. N.; Yermolina, Maria V.

In: Journal of Magnetism and Magnetic Materials, Vol. 469, 01.01.2019, p. 574-579.

Research output: Contribution to journalArticle

Zhuk, N. A. ; Chezhina, N. V. ; Belyy, V. A. ; Makeev, B. A. ; Miroshnichenko, A. S. ; Beznosikov, D. S. ; Nekipelov, S. V. ; Sivkov, V. N. ; Yermolina, Maria V. / Influence of barium and strontium atoms on magnetic properties of iron-containing solid solutions Bi2MNb2O9 (M – Ba, Sr). In: Journal of Magnetism and Magnetic Materials. 2019 ; Vol. 469. pp. 574-579.
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AU - Chezhina, N. V.

AU - Belyy, V. A.

AU - Makeev, B. A.

AU - Miroshnichenko, A. S.

AU - Beznosikov, D. S.

AU - Nekipelov, S. V.

AU - Sivkov, V. N.

AU - Yermolina, Maria V.

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AB - Magnetic dilution and NEXAFS spectroscopy were used in the study of iron-containing solid solutions Bi2MNb2O9 (M – Ba, Sr) with layered perovskite-like structure. The analysis of the NEXAFS Fe2p-spectra of iron-containing solid solutions and iron oxides revealed that the studied Fe atoms were mainly in the +3 oxidation state. The study of magnetic susceptibility of the Bi2Ba(Sr)Nb2−2xFe2xO9−δ solid solutions showed the influence of atoms of the second coordination sphere on the distribution, degree of clustering, and intensity of exchange interactions in clusters of iron atoms. It was established that iron (III) atoms exhibited selectivity in filling the cation positions, preferring less distorted octahedral positions. The substitution of barium with strontium atoms led to intensification of the exchange of the ferromagnetic type and to a decrease in the degree of clustering of iron atoms in the solid solutions Bi2SrNb2−2xFe2xO9−δ.

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