• DocumentCode
    1001036
  • Title

    Advances in properties and manufacturing of chromium dioxide

  • Author

    Chen, H.Y. ; Hiller, D.M. ; Hudson, J.E. ; Westenbroek, C. J A

  • Author_Institution
    E. I. du Pont de Nemours Wilmington, DE-U.S.A.
  • Volume
    20
  • Issue
    1
  • fYear
    1984
  • fDate
    1/1/1984 12:00:00 AM
  • Firstpage
    24
  • Lastpage
    26
  • Abstract
    A series of experiments have been designed to explore the upper limits in properties that can be produced from the high pressure, high temperature process for the synthesis of ferro-magnetic chromium dioxide. These show that CrO2coercivity and surface area, i.e. particle size, can be controlled independently over a wide range by the selection of the Cr3+to Cr6+ratio and type and level of dopant. Examples of high coercivity, reduced aspect ratio and high surface area are discussed. The performance of the high surface area (37 m2/g) in consumer video media is presented. Along with these results, a methodology that separates the particle contribution to media performance from the tape process parameters, such as surface smoothness, is presented.
  • Keywords
    Chromium materials/devices; Magnetic tape recording; Chemicals; Chromium; Coercive force; Crystals; Iron; Manufacturing; Particle production; Shape; Size control; Temperature;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1984.1063008
  • Filename
    1063008
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1001036