• DocumentCode
    3603700
  • Title

    Disorder-Induced Enhancement of Magnetic Properties in Ball-Milled Fe2CrAl Alloy

  • Author

    Zhang, H.G. ; Liu, E.K. ; Yue, M. ; Wang, W.H. ; Altounian, Z. ; Wu, G.H.

  • Author_Institution
    Coll. of Mater. Sci. & Eng., Beijing Univ. of Technol., Beijing, China
  • Volume
    51
  • Issue
    11
  • fYear
    2015
  • Firstpage
    1
  • Lastpage
    4
  • Abstract
    First principles calculation for the energies and magnetic moments of Fe2CrAl with various structures has been carried out. The contradiction between theoretical and experimental magnetic moment of Fe2CrAl has been illustrated. The L21-based structure has the lowest energy and thus should be formed during synthesis, while the native magnetic Cr-clusters are responsible for the extra large magnetic moment. Based on these calculations, a metastable and partially disordered B2CD structure has been achieved in a ball-milled Fe2CrAl alloy. It shows a 300 K higher TC and a 1.5 μB higher MS, respectively, compared with the arc-melted samples with L21-based structures.
  • Keywords
    ab initio calculations; aluminium alloys; ball milling; chromium alloys; iron alloys; magnetic moments; order-disorder transformations; Fe2CrAl; L21-based structures; L21-based structure; arc melted samples; ball milling; disorder-induced enhancement; first principles calculation; iron chromium aluminum alloy; magnetic moments; magnetic properties; metastable B2CD structure; native magnetic Cr-clusters; partially disordered B2CD structure; Annealing; Ball milling; Iron; Magnetic moments; Magnetic properties; Magnetization; Ball milling; Fe2CrAl; Heusler alloy; ball milling; disorder;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.2015.2455493
  • Filename
    7155599
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3603700