Detailed Mössbauer study of the cation distribution in CoFe2O4 ferrites

V. Rusanov; V. Gushterov; S. Nikolov; a. X. Trautwein

doi:10.1007/s10751-009-9954-3

Detailed Mössbauer study of the cation distribution in CoFe2O4 ferrites

V. Rusanov, V. Gushterov, S. Nikolov, a. X. Trautwein

Institute of Physics

Abstract

Abstract Partially inverted (Co0.185Fe0.815)[Co0.815Fe1.185]O4 spinel submicron particles with spherical shape are studied at low temperature by Mössbauer spectroscopy. Canted magnetic structures are evidenced. The hyperfine magnetic field distributions P(H hf ) have been simulated by model with two polynomial cation distributions for A- and B-sites. The influence of the second nearest-neighbours and perturbation effect of the third nearest-neighbours are taken into account. The synthesized magnetic field distributions cannot fit with high precision the experimentally observed one. Better explanation is possible if clustering, predominantly occupation of some crystallographic planes with Co2 + ions, formation of cobalt super lattice and submicron surface layer with spin pinning effects are taken into account.

Original language	German
Title of host publication	Hyperfine Interactions
Number of pages	8
Publication date	2009
Pages	67-74
ISBN (Print)	9783642013690
DOIs	https://doi.org/10.1007/s10751-009-9954-3
Publication status	Published - 2009

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10.1007/s10751-009-9954-3

Cite this

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title = "Detailed M{\"o}ssbauer study of the cation distribution in CoFe2O4 ferrites",

abstract = "Abstract Partially inverted (Co0.185Fe0.815)[Co0.815Fe1.185]O4 spinel submicron particles with spherical shape are studied at low temperature by M{\"o}ssbauer spectroscopy. Canted magnetic structures are evidenced. The hyperfine magnetic field distributions P(H hf ) have been simulated by model with two polynomial cation distributions for A- and B-sites. The influence of the second nearest-neighbours and perturbation effect of the third nearest-neighbours are taken into account. The synthesized magnetic field distributions cannot fit with high precision the experimentally observed one. Better explanation is possible if clustering, predominantly occupation of some crystallographic planes with Co2 + ions, formation of cobalt super lattice and submicron surface layer with spin pinning effects are taken into account.",

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T1 - Detailed Mössbauer study of the cation distribution in CoFe2O4 ferrites

AU - Rusanov, V.

AU - Gushterov, V.

AU - Nikolov, S.

AU - Trautwein, a. X.

PY - 2009

Y1 - 2009

N2 - Abstract Partially inverted (Co0.185Fe0.815)[Co0.815Fe1.185]O4 spinel submicron particles with spherical shape are studied at low temperature by Mössbauer spectroscopy. Canted magnetic structures are evidenced. The hyperfine magnetic field distributions P(H hf ) have been simulated by model with two polynomial cation distributions for A- and B-sites. The influence of the second nearest-neighbours and perturbation effect of the third nearest-neighbours are taken into account. The synthesized magnetic field distributions cannot fit with high precision the experimentally observed one. Better explanation is possible if clustering, predominantly occupation of some crystallographic planes with Co2 + ions, formation of cobalt super lattice and submicron surface layer with spin pinning effects are taken into account.

AB - Abstract Partially inverted (Co0.185Fe0.815)[Co0.815Fe1.185]O4 spinel submicron particles with spherical shape are studied at low temperature by Mössbauer spectroscopy. Canted magnetic structures are evidenced. The hyperfine magnetic field distributions P(H hf ) have been simulated by model with two polynomial cation distributions for A- and B-sites. The influence of the second nearest-neighbours and perturbation effect of the third nearest-neighbours are taken into account. The synthesized magnetic field distributions cannot fit with high precision the experimentally observed one. Better explanation is possible if clustering, predominantly occupation of some crystallographic planes with Co2 + ions, formation of cobalt super lattice and submicron surface layer with spin pinning effects are taken into account.

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M3 - Kapitel

SN - 9783642013690

T3 - Hyperfine Interactions

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BT - Hyperfine Interactions

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