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Observation of two separate charge density wave transitions in Gd2Te5 via transmission electron microscopy and high-resolution X-ray diffraction

TitleObservation of two separate charge density wave transitions in Gd2Te5 via transmission electron microscopy and high-resolution X-ray diffraction
Publication TypeJournal Article
Year of Publication2010
AuthorsShin KY, Ru N, Fisher IR, Condron CL, Toney MF, Wu YQ, Kramer MJ
Journal TitleJournal of Alloys and Compounds
Volume489
Pages332-335
Date Published01/21
ISBN Number0925-8388
Accession NumberISI:000273251000005
Keywordscharge density wave, intermetallics, nbse3, pressure, SM2TE5, SMTE3, transmission electron microscopy, x-ray diffraction
Abstract

Gd2Te5 is a layered material consisting of alternating single and double square planar Te sheets. At room temperature the material hosts a complex lattice modulation characterized by multiple in-plane wavevectors. Diffraction measurements performed via transmission electron microscopy and high-resolution X-ray scattering reveal two distinct transitions at T-c1 = 410(3) and T-c2 = 532(3) K, associated with an on-axis incommensurate lattice modulation and an off-axis commensurate lattice modulation respectively. Our results show that the two lattice modulations are separate in origin but that there is some coupling between them. (C) 2009 Elsevier B.V. All rights reserved.
URL<Go to ISI>://000273251000005
DOIDoi 10.1016/J.Jallcom.2009.09.154