TY - JOUR
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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U2 - 10.1103/PhysRevB.75.174413
DO - 10.1103/PhysRevB.75.174413
M3 - Article
AN - SCOPUS:34347228152
SN - 1098-0121
VL - 75
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 17
M1 - 174413
ER -