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Short range ordering in Fe–Ge and Fe–Ga single crystals

Appl. Phys. Lett. 95, 171907 (2009); doi:10.1063/1.3254249

Published 29 October 2009

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Mianliang Huang and Thomas A. Lograsso
Institute for Physical Research and Technology, Iowa State University, Ames, Iowa 50011, USA
We report on the nature of short range ordering (SRO) in slow cooled (100) and (111) Fe81.6Ga18.4 and Fe81Ge9 single crystals determined by x-ray theta-2theta scans. The SRO of the Ga atoms has at least some D03 character. In contrast Ge atoms only exhibit B2 chemical ordering symmetries in the short range order. It has been proposed that the D03 character in the SRO is important for the enhancement in magnetoelasticity in Fe-based alloys; however the presence of B2 character in Fe–Ge alloys suggest that the SRO is not of primary importance in increasing the magnetostriction. ©2009 American Institute of Physics
History: Received 9 September 2009; accepted 5 October 2009; published 29 October 2009
Permalink: http://link.aip.org/link/?APPLAB/95/171907/1
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KEYWORDS and PACS

Keywords
PACS
  • 75.80.+q
    Magnetomechanical and magnetoelectric effects, magnetostriction
  • 75.40.-s
    Critical-point effects, specific heats, short-range order in magnetic materials
  • 61.66.Dk
    Crystal structure of specific alloys
  • YEAR: 2009

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ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (17)
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