Research Papers in Physics and Astronomy

 

Date of this Version

January 1998

Comments

Published in the Journal of Magnetism and Magnetic Materials. Available online as of October 20, 2000, however it was published in January 1998, pages 209-210.

Abstract

The previous kinetics of the two-dimensional diluted Ising antiferromagnet Rb2Co0.85Mg0.15F4 is studied via the temporal relaxation of the field-induced magnetization after field cooling (FC) and zero-field cooling (ZFC), respectively, to T < TN = 75.2K. After FC different non-exponential decay laws indicate a crossover from domain reorientation to wall rearrangement at decreasing T. After ZFC rapidly saturating magnetization of naturally grown domain walls precedes the slow random-field-controlled disordering process.

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