Local structure of multiferroic Tb Mn2 O5: Evidence for an anomalous Tb-O distribution

T. A. Tyson; M. Deleon; S. Yoong; S. W. Cheong

doi:10.1103/PhysRevB.75.174413

Local structure of multiferroic Tb Mn2 O5: Evidence for an anomalous Tb-O distribution

T. A. Tyson, M. Deleon, S. Yoong, S. W. Cheong

Physics

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17 Scopus citations

Abstract

The temperature dependent local structure of Tb Mn2 O5 was determined by x-ray-absorption spectroscopy. An anomalous Tb-O distribution is found. At high temperature, it is broad but resolves into two distinct peaks below ∼180 K. The distributions sharpen below the Tb magnetic ordering temperature (∼10 K). The distortions in the Tb-O distribution, away from the Pbam structure, are consistent with rotations of the Mn Ox polyhedra about the c axis and suggest that Tb-O bond polarization may play a significant role in the observed ferroelectric properties of this system.

Original language	English (US)
Article number	174413
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	75
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.75.174413
State	Published - May 8 2007

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.75.174413

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title = "Local structure of multiferroic Tb Mn2 O5: Evidence for an anomalous Tb-O distribution",

abstract = "The temperature dependent local structure of Tb Mn2 O5 was determined by x-ray-absorption spectroscopy. An anomalous Tb-O distribution is found. At high temperature, it is broad but resolves into two distinct peaks below ∼180 K. The distributions sharpen below the Tb magnetic ordering temperature (∼10 K). The distortions in the Tb-O distribution, away from the Pbam structure, are consistent with rotations of the Mn Ox polyhedra about the c axis and suggest that Tb-O bond polarization may play a significant role in the observed ferroelectric properties of this system.",

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

year = "2007",

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doi = "10.1103/PhysRevB.75.174413",

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T1 - Local structure of multiferroic Tb Mn2 O5

T2 - Evidence for an anomalous Tb-O distribution

AU - Tyson, T. A.

AU - Deleon, M.

AU - Yoong, S.

AU - Cheong, S. W.

PY - 2007/5/8

Y1 - 2007/5/8

N2 - The temperature dependent local structure of Tb Mn2 O5 was determined by x-ray-absorption spectroscopy. An anomalous Tb-O distribution is found. At high temperature, it is broad but resolves into two distinct peaks below ∼180 K. The distributions sharpen below the Tb magnetic ordering temperature (∼10 K). The distortions in the Tb-O distribution, away from the Pbam structure, are consistent with rotations of the Mn Ox polyhedra about the c axis and suggest that Tb-O bond polarization may play a significant role in the observed ferroelectric properties of this system.

AB - The temperature dependent local structure of Tb Mn2 O5 was determined by x-ray-absorption spectroscopy. An anomalous Tb-O distribution is found. At high temperature, it is broad but resolves into two distinct peaks below ∼180 K. The distributions sharpen below the Tb magnetic ordering temperature (∼10 K). The distortions in the Tb-O distribution, away from the Pbam structure, are consistent with rotations of the Mn Ox polyhedra about the c axis and suggest that Tb-O bond polarization may play a significant role in the observed ferroelectric properties of this system.

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DO - 10.1103/PhysRevB.75.174413

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Local structure of multiferroic Tb Mn2 O5: Evidence for an anomalous Tb-O distribution

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