Soft x-ray absorption spectroscopy and magnetic circular dichroism study of the valence and spin states in spinel MnFe2O4
SCIE
SCOPUS
- Title
- Soft x-ray absorption spectroscopy and magnetic circular dichroism study of the valence and spin states in spinel MnFe2O4
- Authors
- Kang, JS; Kim, G; Lee, HJ; Kim, DH; Kim, HS; Shim, JH; Lee, S; Lee, H; Kim, JY; Kim, BH; Min, BI
- Date Issued
- 2008-01
- Publisher
- AMER PHYSICAL SOC
- Abstract
- The valence and spin states of MnFe(2)O(4) spinel oxide have been investigated by employing soft x-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD). The measured Mn 2p and Fe 2p XAS spectra indicate that Mn and Fe ions are nearly divalent (Mn(2+)) and trivalent (Fe(3+)), respectively. Our XAS and XMCD spectra for MnFe(2)O(4) do not show clear evidence of mixed-valent states but provide evidence for the inversion of both Mn and Fe ions, with T(d)/O(h)similar to 0.8/0.2 for Mn ions and T(d)/O(h)similar to 0.1/0.9 for Fe ions, respectively. Based on our data, MnFe(2)O(4) can be described either by the single-valence states of (Mn(0.8)(2+)Fe(0.2)(3+))(A)[Fe(1.8)(3+)Mn(0.2)(2+)](B)O(4) or by the mixed-valence states of (Mn(0.8)(2+)Fe(0.2)(3+))(A)[Fe(1.6)(3+)Fe(0.2)(2+)Mn(0.2)(3+)](B)O(4).
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12194
- DOI
- 10.1103/PhysRevB.77.035121
- ISSN
- 1098-0121
- Article Type
- Article
- Citation
- PHYSICAL REVIEW B, vol. 77, no. 3, 2008-01
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