Two distinct magnetic susceptibility peaks and magnetic reversal events in a cylindrical core/shell spin-1 Ising nanowire


ŞARLI N., KESKİN M.

SOLID STATE COMMUNICATIONS, vol.152, no.5, pp.354-359, 2012 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 152 Issue: 5
  • Publication Date: 2012
  • Doi Number: 10.1016/j.ssc.2011.12.015
  • Title of Journal : SOLID STATE COMMUNICATIONS
  • Page Numbers: pp.354-359

Abstract

The magnetization and susceptibility of a cylindrical core/shell spin-1 Ising nanowire are investigated within the effective-field theory with correlations for both ferromagnetic and antiferromagnetic exchange interactions between the shell and the core. We find that the nanowire system exhibits two distinct susceptibility peaks and two successive phase transitions; either both of them are second-order transitions or one is a second-order transition and the other is a first-order transition for a small exchange interaction. The susceptibility versus switching field and the hysteresis behavior are investigated for different temperatures. It is found that the magnetization reversal events appear as peaks in the susceptibility versus switching field curve, the positions of which define the coercive field points of the nanowire system; the distance between the two susceptibility peaks decreases with increasing temperature. (C) 2011 Elsevier Ltd. All rights reserved.