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

doi:10.1016/j.jssc.2012.03.011

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 journal › Article › Academic › peer-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 language	English
Pages (from-to)	50-54
Journal	Journal of solid state chemistry
Volume	195
DOIs	https://doi.org/10.1016/j.jssc.2012.03.011
Publication status	Published - Nov 2012

Keywords

Jarosite
Phonon mode
Frustrated triangular antiferromagnet

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10.1016/j.jssc.2012.03.011

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@article{fe3a5c40b9bf4d5dae51269ea7d2cac9,

title = "Spin-lattice coupling in iron jarosite",

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.}",

year = "2012",

month = nov,

doi = "10.1016/j.jssc.2012.03.011",

language = "English",

volume = "195",

pages = "50--54",

journal = "Journal of solid state chemistry",

issn = "0022-4596",

publisher = "Academic Press",

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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

Y1 - 2012/11

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

M3 - Article

SN - 0022-4596

VL - 195

SP - 50

EP - 54

JO - Journal of solid state chemistry

JF - Journal of solid state chemistry

ER -

Spin-lattice coupling in iron jarosite

Abstract

Keywords

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