• DocumentCode
    967557
  • Title

    Dependence of the permanent magnet properties of Mn55Al45on particle size

  • Author

    McCurrie, R.A. ; Rickman, J. ; Dunk, P. ; Hawkridge, D.G.

  • Author_Institution
    University of Bradford, Bradford, West Yorkshire, U.K.
  • Volume
    14
  • Issue
    5
  • fYear
    1978
  • fDate
    9/1/1978 12:00:00 AM
  • Firstpage
    682
  • Lastpage
    684
  • Abstract
    The magnetic properties of the alloy Mn55Al45in its metastable ferromagnetic state have been investigated as a function of particle size in the range 1000μm down to about 20μm. It has been shown that the coercivity rises very rapidly as the particle size decreases but the remanence was shown to increase slowly and then to decrease rapidly due to the disorder resulting from the plastic deformation during grinding. The maximum intrinsic coercivity of 5 KOe was obtained for 63-75 μm particles while the maximum remanence of 60 e.m.u/g was obtained for 125-150 μm particles. The best potential permanent magnet properties were obtained for 125-150 μm particles viz, (BH_{\\max } = 2.2 MGOe, B_{r} = 4.2 KG, andBHc= 2 kOe.
  • Keywords
    Permanent magnet materials; Coercive force; Iron alloys; Magnetic materials; Magnetic properties; Manganese alloys; Metastasis; Permanent magnets; Plastics; Remanence; Saturation magnetization;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1978.1059950
  • Filename
    1059950
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=967557