Valence states and occupation sites in (Fe,Mn)3O4 spinel oxides investigated by soft x-ray absorption spectroscopy and magnetic circular dichroism

H. J. Lee; G. Kim; D. H. Kim; J. S. Kang; C. L. Zhang; S. W. Cheong; J. H. Shim; Soonchil Lee; Hangil Lee; J. Y. Kim; B. H. Kim; B. I. Min

doi:10.1088/0953-8984/20/29/295203

Valence states and occupation sites in (Fe,Mn)₃O₄ spinel oxides investigated by soft x-ray absorption spectroscopy and magnetic circular dichroism

H. J. Lee, G. Kim, D. H. Kim, J. S. Kang, C. L. Zhang, S. W. Cheong, J. H. Shim, Soonchil Lee, Hangil Lee, J. Y. Kim, B. H. Kim, B. I. Min

School of Arts and Sciences, New High Energy Theory Center

Research output: Contribution to journal › Article › peer-review

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Abstract

The electronic structures of (Fe,Mn)₃O₄ spinel oxides have been investigated by employing soft-x-ray absorption spectroscopy (XAS) and soft x-ray magnetic circular dichroism (XMCD). We have determined the valence states as well as the occupation sites of Mn and Fe ions in Fe _0.9Mn_2.1O₄ and MnFe₂O₄. Fe_0.9Mn_2.1O₄ is found to be close to the inverse spinel (the inversion parameter y≈0.85), while MnFe₂O ₄ is close to the normal spinel (y≈0.2). In Fe _0.9Mn_2.1O₄, Fe ions are mainly trivalent and the majority of Fe³⁺ ions occupy the octahedral B sites, while Mn ions are mixed-valent with approximately 45% Mn_A²⁺ at the tetrahedral A sites and 55% Mn_B³⁺ ions at the octahedral B sites. In MnFe₂O₄, Mn ions are mainly divalent and the majority of Mn²⁺ ions occupy the tetrahedral A sites, while Fe ions are mainly trivalent and the majority of Fe³⁺ ions occupy the octahedral B sites.

Original language	English (US)
Article number	295203
Journal	Journal of Physics Condensed Matter
Volume	20
Issue number	29
DOIs	https://doi.org/10.1088/0953-8984/20/29/295203
State	Published - Jul 23 2008

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics

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10.1088/0953-8984/20/29/295203

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Lee, H. J., Kim, G., Kim, D. H., Kang, J. S., Zhang, C. L., Cheong, S. W., Shim, J. H., Lee, S., Lee, H., Kim, J. Y., Kim, B. H., & Min, B. I. (2008). Valence states and occupation sites in (Fe,Mn)₃O₄ spinel oxides investigated by soft x-ray absorption spectroscopy and magnetic circular dichroism. Journal of Physics Condensed Matter, 20(29), Article 295203. https://doi.org/10.1088/0953-8984/20/29/295203

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title = "Valence states and occupation sites in (Fe,Mn)3O4 spinel oxides investigated by soft x-ray absorption spectroscopy and magnetic circular dichroism",

abstract = "The electronic structures of (Fe,Mn)3O4 spinel oxides have been investigated by employing soft-x-ray absorption spectroscopy (XAS) and soft x-ray magnetic circular dichroism (XMCD). We have determined the valence states as well as the occupation sites of Mn and Fe ions in Fe 0.9Mn2.1O4 and MnFe2O4. Fe0.9Mn2.1O4 is found to be close to the inverse spinel (the inversion parameter y≈0.85), while MnFe2O 4 is close to the normal spinel (y≈0.2). In Fe 0.9Mn2.1O4, Fe ions are mainly trivalent and the majority of Fe3+ ions occupy the octahedral B sites, while Mn ions are mixed-valent with approximately 45% MnA2+ at the tetrahedral A sites and 55% MnB3+ ions at the octahedral B sites. In MnFe2O4, Mn ions are mainly divalent and the majority of Mn2+ ions occupy the tetrahedral A sites, while Fe ions are mainly trivalent and the majority of Fe3+ ions occupy the octahedral B sites.",

author = "Lee, {H. J.} and G. Kim and Kim, {D. H.} and Kang, {J. S.} and Zhang, {C. L.} and Cheong, {S. W.} and Shim, {J. H.} and Soonchil Lee and Hangil Lee and Kim, {J. Y.} and Kim, {B. H.} and Min, {B. I.}",

year = "2008",

month = jul,

day = "23",

doi = "10.1088/0953-8984/20/29/295203",

language = "English (US)",

volume = "20",

journal = "Journal of Physics Condensed Matter",

issn = "0953-8984",

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Lee, HJ, Kim, G, Kim, DH, Kang, JS, Zhang, CL, Cheong, SW, Shim, JH, Lee, S, Lee, H, Kim, JY, Kim, BH & Min, BI 2008, 'Valence states and occupation sites in (Fe,Mn)₃O₄ spinel oxides investigated by soft x-ray absorption spectroscopy and magnetic circular dichroism', Journal of Physics Condensed Matter, vol. 20, no. 29, 295203. https://doi.org/10.1088/0953-8984/20/29/295203

TY - JOUR

T1 - Valence states and occupation sites in (Fe,Mn)3O4 spinel oxides investigated by soft x-ray absorption spectroscopy and magnetic circular dichroism

AU - Lee, H. J.

AU - Kim, G.

AU - Kim, D. H.

AU - Kang, J. S.

AU - Zhang, C. L.

AU - Cheong, S. W.

AU - Shim, J. H.

AU - Lee, Soonchil

AU - Lee, Hangil

AU - Kim, J. Y.

AU - Kim, B. H.

AU - Min, B. I.

PY - 2008/7/23

Y1 - 2008/7/23

N2 - The electronic structures of (Fe,Mn)3O4 spinel oxides have been investigated by employing soft-x-ray absorption spectroscopy (XAS) and soft x-ray magnetic circular dichroism (XMCD). We have determined the valence states as well as the occupation sites of Mn and Fe ions in Fe 0.9Mn2.1O4 and MnFe2O4. Fe0.9Mn2.1O4 is found to be close to the inverse spinel (the inversion parameter y≈0.85), while MnFe2O 4 is close to the normal spinel (y≈0.2). In Fe 0.9Mn2.1O4, Fe ions are mainly trivalent and the majority of Fe3+ ions occupy the octahedral B sites, while Mn ions are mixed-valent with approximately 45% MnA2+ at the tetrahedral A sites and 55% MnB3+ ions at the octahedral B sites. In MnFe2O4, Mn ions are mainly divalent and the majority of Mn2+ ions occupy the tetrahedral A sites, while Fe ions are mainly trivalent and the majority of Fe3+ ions occupy the octahedral B sites.

AB - The electronic structures of (Fe,Mn)3O4 spinel oxides have been investigated by employing soft-x-ray absorption spectroscopy (XAS) and soft x-ray magnetic circular dichroism (XMCD). We have determined the valence states as well as the occupation sites of Mn and Fe ions in Fe 0.9Mn2.1O4 and MnFe2O4. Fe0.9Mn2.1O4 is found to be close to the inverse spinel (the inversion parameter y≈0.85), while MnFe2O 4 is close to the normal spinel (y≈0.2). In Fe 0.9Mn2.1O4, Fe ions are mainly trivalent and the majority of Fe3+ ions occupy the octahedral B sites, while Mn ions are mixed-valent with approximately 45% MnA2+ at the tetrahedral A sites and 55% MnB3+ ions at the octahedral B sites. In MnFe2O4, Mn ions are mainly divalent and the majority of Mn2+ ions occupy the tetrahedral A sites, while Fe ions are mainly trivalent and the majority of Fe3+ ions occupy the octahedral B sites.

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VL - 20

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 29

M1 - 295203

ER -

Valence states and occupation sites in (Fe,Mn)₃O₄ spinel oxides investigated by soft x-ray absorption spectroscopy and magnetic circular dichroism

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