Mössbauer study of CoFeRhO4

J. W. Kim; D. H. An; S. K. Chang; H. L. Ju; K. S. Baek; H. N. Oak; H. S. Lee

doi:10.1016/S0022-3697(01)00136-6

Mössbauer study of CoFeRhO₄

J. W. Kim, D. H. An, S. K. Chang, H. L. Ju, K. S. Baek, H. N. Oak, H. S. Lee

Department of Physics

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

2 Citations (Scopus)

Abstract

CoFeRhO₄ has been studied by Mössbauer spectroscopy and X-ray diffraction. The crystal is found to have a cubic spinel structure with the lattice constant a₀=8.451 ± 0.005 Å. The iron ions are in ferric states. The temperature dependence of the magnetic hyperfine field is analyzed by the Néel theory of ferrimagnetism. The intersublattice superexchange interaction is antiferromagnetic and strong with a strength of J_AB = -12.39k_B while the intrasublattice superexchange interactions are weak with strengths of J_AA = -4.96k_B and J_BB = 6.20k_B. As the temperature increases toward the Néel temperature T_N, a systematic line broadening effect in the Mössbauer spectrum is observed and interpreted to originate from different temperature dependences of the magnetic hyperfine fields at various iron sites.

Original language	English
Pages (from-to)	241-247
Number of pages	7
Journal	Journal of Physics and Chemistry of Solids
Volume	63
Issue number	2
DOIs	https://doi.org/10.1016/S0022-3697(01)00136-6
Publication status	Published - 2002 Feb

Bibliographical note

Funding Information:
This work was supported by Grant No. 2000-2-0617 from the Basic Research Program of the Korea Science and Engineering Foundation and by Korea Research Foundation, Grant (KRF-2000-2-0801). This work was also supported by the Brain Korea 21 Project.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1016/S0022-3697(01)00136-6

Cite this

@article{748af9a73ebf42c188bf3c3ae02fda30,

title = "M{\"o}ssbauer study of CoFeRhO4",

abstract = "CoFeRhO4 has been studied by M{\"o}ssbauer spectroscopy and X-ray diffraction. The crystal is found to have a cubic spinel structure with the lattice constant a0=8.451 ± 0.005 {\AA}. The iron ions are in ferric states. The temperature dependence of the magnetic hyperfine field is analyzed by the N{\'e}el theory of ferrimagnetism. The intersublattice superexchange interaction is antiferromagnetic and strong with a strength of JAB = -12.39kB while the intrasublattice superexchange interactions are weak with strengths of JAA = -4.96kB and JBB = 6.20kB. As the temperature increases toward the N{\'e}el temperature TN, a systematic line broadening effect in the M{\"o}ssbauer spectrum is observed and interpreted to originate from different temperature dependences of the magnetic hyperfine fields at various iron sites.",

author = "Kim, {J. W.} and An, {D. H.} and Chang, {S. K.} and Ju, {H. L.} and Baek, {K. S.} and Oak, {H. N.} and Lee, {H. S.}",

note = "Funding Information: This work was supported by Grant No. 2000-2-0617 from the Basic Research Program of the Korea Science and Engineering Foundation and by Korea Research Foundation, Grant (KRF-2000-2-0801). This work was also supported by the Brain Korea 21 Project.",

year = "2002",

month = feb,

doi = "10.1016/S0022-3697(01)00136-6",

language = "English",

volume = "63",

pages = "241--247",

journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

publisher = "Elsevier Limited",

number = "2",

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TY - JOUR

T1 - Mössbauer study of CoFeRhO4

AU - Kim, J. W.

AU - An, D. H.

AU - Chang, S. K.

AU - Ju, H. L.

AU - Baek, K. S.

AU - Oak, H. N.

AU - Lee, H. S.

N1 - Funding Information: This work was supported by Grant No. 2000-2-0617 from the Basic Research Program of the Korea Science and Engineering Foundation and by Korea Research Foundation, Grant (KRF-2000-2-0801). This work was also supported by the Brain Korea 21 Project.

PY - 2002/2

Y1 - 2002/2

N2 - CoFeRhO4 has been studied by Mössbauer spectroscopy and X-ray diffraction. The crystal is found to have a cubic spinel structure with the lattice constant a0=8.451 ± 0.005 Å. The iron ions are in ferric states. The temperature dependence of the magnetic hyperfine field is analyzed by the Néel theory of ferrimagnetism. The intersublattice superexchange interaction is antiferromagnetic and strong with a strength of JAB = -12.39kB while the intrasublattice superexchange interactions are weak with strengths of JAA = -4.96kB and JBB = 6.20kB. As the temperature increases toward the Néel temperature TN, a systematic line broadening effect in the Mössbauer spectrum is observed and interpreted to originate from different temperature dependences of the magnetic hyperfine fields at various iron sites.

AB - CoFeRhO4 has been studied by Mössbauer spectroscopy and X-ray diffraction. The crystal is found to have a cubic spinel structure with the lattice constant a0=8.451 ± 0.005 Å. The iron ions are in ferric states. The temperature dependence of the magnetic hyperfine field is analyzed by the Néel theory of ferrimagnetism. The intersublattice superexchange interaction is antiferromagnetic and strong with a strength of JAB = -12.39kB while the intrasublattice superexchange interactions are weak with strengths of JAA = -4.96kB and JBB = 6.20kB. As the temperature increases toward the Néel temperature TN, a systematic line broadening effect in the Mössbauer spectrum is observed and interpreted to originate from different temperature dependences of the magnetic hyperfine fields at various iron sites.

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