Vector magnetisation of recording media: a new method to compensate for demagnetising fields

Author

Bernards, J.P.C. ; Cramer, H.A.J.

Author_Institution

Philips Res. Lab., Eindhoven, Netherlands

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

4873

Lastpage

4875

Abstract

Until now measurements of M(H) loops of thin samples have been corrected for demagnetization after completion of the measurement. In this way, it is possible to correct for the component of the demagnetizing field which is parallel to the applied field. The authors present a method to correct for the total demagnetizing field during the measurement by simultaneously changing the strength of the applied field and rotating the sample. This method has been applied to a sample of metal-evaporated (ME) tape and a Co-Cr layer. These measurements show that the method is significantly better than existing methods. It is shown that the intrinsic magnetic properties of the ME tape and the Co-Cr layer measured with the method are remarkably similar

Keywords

chromium alloys; cobalt alloys; compensation; demagnetisation; ferromagnetic properties of substances; magnetic hysteresis; magnetic recording; magnetic tapes; magnetic thin films; magnetic variables measurement; Co-Cr layers; compensation; hysteresis loop; intrinsic magnetic properties; magnetic recording media; metal evaporated tape; micromagnetic models; total demagnetizing field; vector magnetisation; Demagnetization; High definition video; Laboratories; Magnetic field measurement; Magnetic hysteresis; Magnetic properties; Magnetization; Micromagnetics; Neodymium; Perpendicular magnetic recording;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278975

Filename

278975