Local structure of multiferroic RMn2O5: Important role of the R site

T. A. Tyson; Z. Chen; M. A. DeLeon; S. Yoong; S. W. Cheong

doi:10.1016/j.jmmm.2009.02.017

Local structure of multiferroic RMn₂O₅: Important role of the R site

T. A. Tyson, Z. Chen, M. A. DeLeon, S. Yoong, S. W. Cheong

Physics

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

5 Scopus citations

Abstract

The temperature and magnetic field dependent local structure of RMn₂O₅ systems was examined. While no significant displacements of the Mn ions are observed, it is found that the R-O distribution exhibits changes at low temperature which are possibly related to the changes in the electric polarization. Density functional computations are used to explore the system dynamics and to link the local structural measurements with anomalous changes in the infrared absorption spectra. The anomalous R-O distribution and observed coupling to magnetic fields point to the need to properly treat the 4f electrons on the R sites in these systems.

Original language	English (US)
Pages (from-to)	1714-1718
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	321
Issue number	11
DOIs	https://doi.org/10.1016/j.jmmm.2009.02.017
State	Published - Jun 2009

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Keywords

Local structure
Multiferroic
XAFS

Access to Document

10.1016/j.jmmm.2009.02.017

Cite this

@article{189abbf3e61f48c58876d4c5b7965ad7,

title = "Local structure of multiferroic RMn2O5: Important role of the R site",

abstract = "The temperature and magnetic field dependent local structure of RMn2O5 systems was examined. While no significant displacements of the Mn ions are observed, it is found that the R-O distribution exhibits changes at low temperature which are possibly related to the changes in the electric polarization. Density functional computations are used to explore the system dynamics and to link the local structural measurements with anomalous changes in the infrared absorption spectra. The anomalous R-O distribution and observed coupling to magnetic fields point to the need to properly treat the 4f electrons on the R sites in these systems.",

keywords = "Local structure, Multiferroic, XAFS",

author = "Tyson, {T. A.} and Z. Chen and DeLeon, {M. A.} and S. Yoong and Cheong, {S. W.}",

note = "Funding Information: This work is supported by DOE Grants DE-FG02-07ER46402 and DE-FG02-07ER46382. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the US DOE under Contract no. DE-AC02-05CH11231.",

year = "2009",

month = jun,

doi = "10.1016/j.jmmm.2009.02.017",

language = "English (US)",

volume = "321",

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journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

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T1 - Local structure of multiferroic RMn2O5

T2 - Important role of the R site

AU - Tyson, T. A.

AU - Chen, Z.

AU - DeLeon, M. A.

AU - Yoong, S.

AU - Cheong, S. W.

N1 - Funding Information: This work is supported by DOE Grants DE-FG02-07ER46402 and DE-FG02-07ER46382. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the US DOE under Contract no. DE-AC02-05CH11231.

PY - 2009/6

Y1 - 2009/6

N2 - The temperature and magnetic field dependent local structure of RMn2O5 systems was examined. While no significant displacements of the Mn ions are observed, it is found that the R-O distribution exhibits changes at low temperature which are possibly related to the changes in the electric polarization. Density functional computations are used to explore the system dynamics and to link the local structural measurements with anomalous changes in the infrared absorption spectra. The anomalous R-O distribution and observed coupling to magnetic fields point to the need to properly treat the 4f electrons on the R sites in these systems.

AB - The temperature and magnetic field dependent local structure of RMn2O5 systems was examined. While no significant displacements of the Mn ions are observed, it is found that the R-O distribution exhibits changes at low temperature which are possibly related to the changes in the electric polarization. Density functional computations are used to explore the system dynamics and to link the local structural measurements with anomalous changes in the infrared absorption spectra. The anomalous R-O distribution and observed coupling to magnetic fields point to the need to properly treat the 4f electrons on the R sites in these systems.

KW - Local structure

KW - Multiferroic

KW - XAFS

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