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

Authors
Journal
Journal of Alloys and Compounds
0925-8388
Publisher
Elsevier
Publication Date
Volume
556
Identifiers
DOI: 10.1016/j.jallcom.2012.12.102
Keywords
  • X-Ray Powder Diffraction
  • High Resolution Powder Diffraction
  • Synchrotron Radiation
  • Phase Transition
  • Peak Broadening
  • Annealing

Abstract

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 Kα1 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.

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