• DocumentCode
    1021788
  • Title

    Influence of particle perfection on properties of γ-Fe2O3

  • Author

    Wenbo, Liu

  • Author_Institution
    Institute of Magnetic Recording Technology, Shanxi, PRC
  • Volume
    23
  • Issue
    1
  • fYear
    1987
  • fDate
    1/1/1987 12:00:00 AM
  • Firstpage
    89
  • Lastpage
    91
  • Abstract
    In this paper, two parameters ΔSSA and OAPM are suggested to describe quantitatively the particle perfection which has strong influence on the magnetic and rheological properties of magnetic powder. ΔSSA is the difference between the value determined by BET method and that calculated by the following equation: SSA = 2/dl (2R+1), where d, l and R are density, particle length and acicularity ratio of particles respectively. OAPM is the oil absorption per unit specific surface area of γ-Fe2O3. The technical data of products provided by two famous manufacturers are analysed. The relations among ΔSSA, OAPM, coercivity, squareness, orientation ratio and SFD etc. are discussed.
  • Keywords
    Magnetic recording; Particle measurements; Surfaces; Absorption; Chemicals; Crystallization; Magnetic properties; Magnetic recording; Partial response channels; Particle measurements; Petroleum; Powders; Rheology;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1987.1064801
  • Filename
    1064801
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1021788