Effects of mechanical grinding and low temperature annealing on crystal structure of Er5Si4

TitleEffects of mechanical grinding and low temperature annealing on crystal structure of Er5Si4
Publication TypeJournal Article
Year of Publication2013
AuthorsCao Q, Chumbley LS, Mudryk Y, Zou M, Pecharsky VK, Gschneidner KA
Journal TitleJournal of Alloys and Compounds
Volume556
Pages127-134
Date Published04
Type of ArticleArticle
ISBN Number0925-8388
Accession NumberWOS:000315183600021
Keywordsalloys, annealing, gd-5(si2ge2), gd-5(sixge1-x)(4), High resolution powder diffraction, identification, induced phase-transformation, Peak broadening, phase transition, plates, rare earth-germanium, silicon compounds, steels, Synchrotron radiation, transition, X-ray powder diffraction
Abstract

The effect of mechanical grinding and subsequent low temperature annealing on the orthorhombic to monoclinic structural transition in the Er5Si4 compound was studied by X-ray powder diffraction using both a conventional laboratory Cu K alpha(1) radiation and a high-energy synchrotron source. A reversible phase transition from the orthorhombic to monoclinic structure occurs as a result of mechanical grinding. Low temperature annealing reverses the transformation and converts the formed monoclinic phase back to the orthorhombic, evidently by relieving residual stress introduced during the grinding. (C) 2013 Published by Elsevier B.V.

URL<Go to ISI>://WOS:000315183600021
DOI10.1016/j.jallcom.2012.12.102