Spin-lattice coupling in iron jarosite

A. J. C. Buurma, I. P. Handayani, N. Mufti, G. R. Blake, P. H. M. van Loosdrecht, T. T. M. Palstra

    Research output: Contribution to journalArticleAcademicpeer-review

    2 Citations (Scopus)

    Abstract

    We have studied the magnetoelectric coupling of the frustrated triangular antiferromagnet iron jarosite using Raman spectroscopy, dielectric measurements and specific heat. Temperature dependent capacitance measurements show an anomaly in the dielectric constant at TN. Specific heat data indicate the presence of a low frequency Einstein mode at low temperature. Raman spectroscopy confirms the presence of a new mode below TN that can be attributed to folding of the Brillouin zone. This mode shifts and sharpens below TN. We evaluate the strength of the magnetoelectric coupling using the symmetry unrestricted biquadratic magnetoelectric terms in the free energy.
    Original languageEnglish
    Pages (from-to)50-54
    JournalJournal of solid state chemistry
    Volume195
    DOIs
    Publication statusPublished - Nov 2012

    Keywords

    • Jarosite
    • Phonon mode
    • Frustrated triangular antiferromagnet

    Cite this

    Buurma, A. J. C., Handayani, I. P., Mufti, N., Blake, G. R., van Loosdrecht, P. H. M., & Palstra, T. T. M. (2012). Spin-lattice coupling in iron jarosite. Journal of solid state chemistry, 195, 50-54. https://doi.org/10.1016/j.jssc.2012.03.011
    Buurma, A. J. C. ; Handayani, I. P. ; Mufti, N. ; Blake, G. R. ; van Loosdrecht, P. H. M. ; Palstra, T. T. M. / Spin-lattice coupling in iron jarosite. In: Journal of solid state chemistry. 2012 ; Vol. 195. pp. 50-54.
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    abstract = "We have studied the magnetoelectric coupling of the frustrated triangular antiferromagnet iron jarosite using Raman spectroscopy, dielectric measurements and specific heat. Temperature dependent capacitance measurements show an anomaly in the dielectric constant at TN. Specific heat data indicate the presence of a low frequency Einstein mode at low temperature. Raman spectroscopy confirms the presence of a new mode below TN that can be attributed to folding of the Brillouin zone. This mode shifts and sharpens below TN. We evaluate the strength of the magnetoelectric coupling using the symmetry unrestricted biquadratic magnetoelectric terms in the free energy.",
    keywords = "Jarosite, Phonon mode, Frustrated triangular antiferromagnet",
    author = "Buurma, {A. J. C.} and Handayani, {I. P.} and N. Mufti and Blake, {G. R.} and {van Loosdrecht}, {P. H. M.} and Palstra, {T. T. M.}",
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    Buurma, AJC, Handayani, IP, Mufti, N, Blake, GR, van Loosdrecht, PHM & Palstra, TTM 2012, 'Spin-lattice coupling in iron jarosite', Journal of solid state chemistry, vol. 195, pp. 50-54. https://doi.org/10.1016/j.jssc.2012.03.011

    Spin-lattice coupling in iron jarosite. / Buurma, A. J. C.; Handayani, I. P.; Mufti, N.; Blake, G. R.; van Loosdrecht, P. H. M.; Palstra, T. T. M.

    In: Journal of solid state chemistry, Vol. 195, 11.2012, p. 50-54.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Spin-lattice coupling in iron jarosite

    AU - Buurma, A. J. C.

    AU - Handayani, I. P.

    AU - Mufti, N.

    AU - Blake, G. R.

    AU - van Loosdrecht, P. H. M.

    AU - Palstra, T. T. M.

    PY - 2012/11

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    N2 - We have studied the magnetoelectric coupling of the frustrated triangular antiferromagnet iron jarosite using Raman spectroscopy, dielectric measurements and specific heat. Temperature dependent capacitance measurements show an anomaly in the dielectric constant at TN. Specific heat data indicate the presence of a low frequency Einstein mode at low temperature. Raman spectroscopy confirms the presence of a new mode below TN that can be attributed to folding of the Brillouin zone. This mode shifts and sharpens below TN. We evaluate the strength of the magnetoelectric coupling using the symmetry unrestricted biquadratic magnetoelectric terms in the free energy.

    AB - We have studied the magnetoelectric coupling of the frustrated triangular antiferromagnet iron jarosite using Raman spectroscopy, dielectric measurements and specific heat. Temperature dependent capacitance measurements show an anomaly in the dielectric constant at TN. Specific heat data indicate the presence of a low frequency Einstein mode at low temperature. Raman spectroscopy confirms the presence of a new mode below TN that can be attributed to folding of the Brillouin zone. This mode shifts and sharpens below TN. We evaluate the strength of the magnetoelectric coupling using the symmetry unrestricted biquadratic magnetoelectric terms in the free energy.

    KW - Jarosite

    KW - Phonon mode

    KW - Frustrated triangular antiferromagnet

    U2 - 10.1016/j.jssc.2012.03.011

    DO - 10.1016/j.jssc.2012.03.011

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    Buurma AJC, Handayani IP, Mufti N, Blake GR, van Loosdrecht PHM, Palstra TTM. Spin-lattice coupling in iron jarosite. Journal of solid state chemistry. 2012 Nov;195:50-54. https://doi.org/10.1016/j.jssc.2012.03.011