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DEPENDENCE OF NORMAL AND REVERSED GYROREMANENT MAGNETIZATION ON AC FIELD STRENGTH IN PARTICULATE MEDIA

T. Salaoru1, D. K. Potter2, L. Stoleriu1,* , C. Papusoi1, A. Stancu1

Affiliation

  1. Faculty of Physics, “Alexandru Ioan Cuza” University, Iasi 700506, Romania
  2. Institute of Petroleum Engineering, Heriot-Watt University, Edinburgh, UK

Abstract

In this paper we present experimental results of the dependence of gyroremanent magnetization (GRM) on AC field strength for both “normal” and “reversed” GRM. The experiments were performed on samples of whole tape containing gFe2O3 particles, as well as samples containing dilutely dispersed gFe2O3 particles set in resin, to highlight any differences due to particle interactions. The dispersed particles also had differing degrees of anisotropy, so that any potential differences due to intrinsic anisotropy could also be determined. The results were also compared with recent data on dilutely dispersed CrO2 particles..

Keywords

Gyroremanent effect, Particulate media, Anisotropy.

Submitted at: April 26, 2004
Accepted at: June 10, 2004

Citation

T. Salaoru, D. K. Potter, L. Stoleriu, C. Papusoi, A. Stancu, DEPENDENCE OF NORMAL AND REVERSED GYROREMANENT MAGNETIZATION ON AC FIELD STRENGTH IN PARTICULATE MEDIA, Journal of Optoelectronics and Advanced Materials Vol. 6, Iss. 2, pp. 619-622 (2004)