Frustrated Magnetization in PrxLa-4xBaCuOsFe

W. A. Ortiz, H. Pardo, P. M. Araujo-Moreira, E. Quagliata, K. Prassides, R. Mariezcurrena, A. W. Mombru

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The crystal structure of the system PrjMi-4BaCuOsFe has been recently reviewed. Tfie magnetic structure of samples with x = 0 aiidx = 1 is mainly due to effective local moments of iron and copper. In Pr-rich samples, Fe ions occupy two non-equivalent positions, making it substantially plausible that two or more magnetic subsets might coexist in the system. This contribution presents magnetization studies on five samples of the PrjMi. xBaCuOsFe system (x = 0. 0, 0. 2, 0. 5, 0. 7 and 1. 0). All samples exhibit a strong irreversible behavior between zero-fieldcooled and field-cooled procedures below a certain irreversibility temperature 7-4 Above Tk both branches are coincident and well described by a Curie-Weiss fitting. Decreasing the temperature below TJ, the zero-βeld-cooled response increases less than the field-cooled curve, indicating some degree of frustrated antiferromagnelic couplings.

Original languageEnglish
Title of host publicationMaterials Science Forum
EditorsF.P. Missell
PublisherTrans Tech Publications Ltd
Pages353-357
Number of pages5
ISBN (Print)9780878498277
Publication statusPublished - 1999 Jan 1

Publication series

NameMaterials Science Forum
Volume302-303
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Keywords

  • , antiferromagnetism
  • Spin glass

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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