Probe Mössbauer Spectroscopy of BiNi{sub 0.96}{sup 57}Fe{sub 0.04}O{sub 3}

Journal Article · Mon Oct 15 00:00:00 EDT 2018 · Inorganic Materials

DOI:https://doi.org/10.1134/S0020168518100126· OSTI ID:22787938

Lekina, Yu. O.; Glazkova, I. S. ^[1]; Belik, A. A. ^[2]; Presniakov, I. A.

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1. Moscow State University, Faculty of Chemistry (Russian Federation)
2. National Institute for Materials Science (Japan)

This paper presents results of a {sup 57}Fe probe Mössbauer spectroscopy study of the BiNi{sub 0.96}{sup 57}Fe{sub 0.04}O{sub 3} nickelate. The spectra measured above its TN demonstrate that Fe{sup 3+} cations heterovalently substitute for Ni{sup 2+} nickel (←Fe{sup 3+}), being stabilized on four sites of the nickel sublattice in the structure of BiNiO{sub 3}. Calculations in an ionic model with allowance for monopole and dipole contributions to the electric field gradient indicate that the parameters of electric hyperfine interactions between {sup 57}Fe probe atom nuclei reflect the specifics of the local environment of the nickel in the structure of the unsubstituted BiNiO{sub 3} nickelate. Below T{sup N}, Mössbauer spectra transform into a complex Zeeman structure, which is analyzed in terms of first-order perturbation theory with allowance for electric quadrupole interactions as a small perturbation of the Zeeman levels of the {sup 57}Fe hyperfine structure, as well as for specific features of the magnetic ordering of the Ni{sup 2+} cations in the nickelate studied.

• OSTI ID: 22787938
• Journal Information: Inorganic Materials, Vol. 54, Issue 10; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0020-1685
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CATIONS
DIPOLES
ELECTRIC FIELDS
HYPERFINE STRUCTURE
IRON 57
IRON IONS
MAGNETIZATION
MOESSBAUER SPECTROMETERS
NICKEL
NICKEL IONS
NICKELATES
PEROVSKITE
PERTURBATION THEORY
QUADRUPOLES
SPECTROSCOPY
ZEEMAN EFFECT