Zivkovi, I. and Awana, V. P. S. and Berger, H. (2008) Nonlinear magnetic response in ruthenocuprates. European Physical Journal B: Condensed Matter and Complex Systems , 62 (4). pp. 423-431. ISSN 1434-6036

PDF - Published Version Restricted to Registered users only Download (779Kb) | Request a copy

Abstract

We have performed an investigation of the nonlinear magnetic response in ruthenocuprates. A negative, diverging-like peak at the main magnetic transition TN in RuSr2RECu2O8 (RE = Gd, Y) indicates a possible canted antiferromagnetic order. Another well defined feature above TN points to a blocking of superparamagnetic particles through the T−3 dependence of the third harmonic at higher temperatures. Below TN a nondiverging peak appears, which is strongly affected by the addition of 10% of Cu ions in the RuO2 planes. In RuSr2RE2−xCexCu2O10 the main magnetic transition TM is accompanied by two characteristic temperatures in the third harmonic of the ac susceptibility, in agreement with recent studies from μSR and M¨ossbauer spectroscopy. We find that the spin-spin correlation temperature is the same in both families of ruthenocuprates.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Springer Verlag.
Subjects:	Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	24 Apr 2015 10:21
Last Modified:	24 Apr 2015 10:21
URI:	http://npl.csircentral.net/id/eprint/1116

Actions (login required)

View Item