2007/02/27 by T. A. Tyson, Trevor A. Tyson, M. Deleon +3 · 22 citations
Chemistry · Materials Science · Mathematics · Physics and Astronomy · #Chemistry #Condensed matter physics #Crystallography #Distribution (mathematics) #Ferroelectric and Piezoelectric Materials #Ferroelectricity #Magnetic and transport properties of perovskites and related materials #Materials science #Mathematics #Multiferroics #Multiferroics and related materials #Nuclear magnetic resonance #Physics #Quantum mechanics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.75.174413
published in Physical Review B 75(17) (American Physical Society) · 7 Figures
arxiv created 2007/02/27 · openalex publication_date 2007/05/08 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
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 \ensuremath∼180\phantom\rule0.3em0exK. The distributions sharpen below the Tb magnetic ordering temperature (\ensuremath∼10\phantom\rule0.3em0exK). 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.