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Article
Microstructural analysis of twinned β−Gd5Si2Ge2
Physical Review B
  • John Meyers, Iowa State University
  • L. Scott Chumbley, Iowa State University
  • Wonyoung Choe, Iowa State University
  • Gordon J. Miller, Iowa State University
Document Type
Article
Disciplines
Publication Date
7-24-2002
DOI
10.1103/PhysRevB.66.012106
Abstract

The room-temperature microstructure of the giant magnetocaloric material Gd5Si2Ge2 is investigated using transmission electron microscopy and selected area diffraction. Nonmerohedral twinning is identified and its twin law, which relates one twin component to the other, is revealed. Based on selected area diffraction pattern data, we build a structural model for nonmerohedral twinning and explain its origin in terms of the irregular shear movement of two-dimensional ∞2[Gd5(Si2Ge2)] slabs held together by (Si,Ge) dimers.

Comments

This article is from Physical Review B 66 (2002): 1-3, doi: 10.1103/PhysRevB.66.012106. Posted with permission.

Copyright Owner
The American Physical Society
Language
en
Date Available
2014-09-09
File Format
application/pdf
Citation Information
John Meyers, L. Scott Chumbley, Wonyoung Choe and Gordon J. Miller. "Microstructural analysis of twinned β−Gd5Si2Ge2" Physical Review B Vol. 66 (2002) p. 1 - 3
Available at: http://works.bepress.com/l_chumbley/24/