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Title: Local Structure of Multiferroic TbMn2O5: Evidence for an Anomalous Tb-O Distribution

Abstract

The temperature dependent local structure of TbMn2O5 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 MnOx 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.

Authors:
; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
960008
Report Number(s):
BNL-82994-2009-JA
Journal ID: ISSN 0163-1829; PRBMDO; TRN: US1005865
DOE Contract Number:
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review B: Condensed Matter and Materials Physics; Journal Volume: 75; Journal Issue: 17
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DISTRIBUTION; POLARIZATION; SPECTROSCOPY; FERROELECTRIC MATERIALS; TERBIUM COMPOUNDS; national synchrotron light source

Citation Formats

Tyson,T., Deleon, M., Yoong, S., and Cheong, S. Local Structure of Multiferroic TbMn2O5: Evidence for an Anomalous Tb-O Distribution. United States: N. p., 2007. Web. doi:10.1103/PhysRevB.75.174413.
Tyson,T., Deleon, M., Yoong, S., & Cheong, S. Local Structure of Multiferroic TbMn2O5: Evidence for an Anomalous Tb-O Distribution. United States. doi:10.1103/PhysRevB.75.174413.
Tyson,T., Deleon, M., Yoong, S., and Cheong, S. Mon . "Local Structure of Multiferroic TbMn2O5: Evidence for an Anomalous Tb-O Distribution". United States. doi:10.1103/PhysRevB.75.174413.
@article{osti_960008,
title = {Local Structure of Multiferroic TbMn2O5: Evidence for an Anomalous Tb-O Distribution},
author = {Tyson,T. and Deleon, M. and Yoong, S. and Cheong, S.},
abstractNote = {The temperature dependent local structure of TbMn2O5 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 MnOx 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.},
doi = {10.1103/PhysRevB.75.174413},
journal = {Physical Review B: Condensed Matter and Materials Physics},
number = 17,
volume = 75,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}
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