"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Influence of statistical interactions on the ΔH method

F. CIUBOTARU1,* , A. STANCU1, M. CERCHEZ1,2

Affiliation

  1. Department of Solid State and Theoretical Physics, Alexandru Ioan Cuza University, 700506, Iaşi, Romania
  2. Heinrich-Heine-Universität, Universitätsstr. 1, 40225 Düsseldorf, Germany

Abstract

This paper is dedicated to a complex study of the effect of the statistical field interactions on the ΔH method used as a tool for experimental evaluation of the intrinsic field distribution in particulate media, especially in modern perpendicular recording media. A Preisach-type approach is considered, in the first level of complexity we consider a Classical Preisach model (CPM) in which unvariable interaction field distribution is taken into account and a more general approach given by the PM2 model (Preisach Model for Patterned Media) is presented. PM2 model was developed as a special tool for characterization of interactions in structured materials like the well known patterned media. In such systems, the interaction field distribution has a complex structure and show a strong dependence on the sample magnetization. For each model we have compared the results for a system with negligible interactions with the more interactive systems..

Keywords

Intrinsic switching field distribution, Preisach model, Hysteresis, Statistical interactions, ΔH method.

Submitted at: Jan. 25, 2007
Accepted at: April 15, 2007

Citation

F. CIUBOTARU, A. STANCU, M. CERCHEZ, Influence of statistical interactions on the ΔH method, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 4, pp. 1172-1175 (2007)