Frustrated Magnetization in PrxLa-4xBaCuOsFe

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

Frustrated Magnetization in PrxLa-4xBaCuOsFe

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

Advanced Institute for Materials Research (AIMR)

Research output: Chapter in Book/Report/Conference proceeding › Chapter

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 language	English
Title of host publication	Materials Science Forum
Editors	F.P. Missell
Publisher	Trans Tech Publications Ltd
Pages	353-357
Number of pages	5
ISBN (Print)	9780878498277
Publication status	Published - 1999 Jan 1

Publication series

Name	Materials Science Forum
Volume	302-303
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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title = "Frustrated Magnetization in PrxLa-4xBaCuOsFe",

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.",

keywords = ", antiferromagnetism, Spin glass",

author = "Ortiz, {W. A.} and H. Pardo and Araujo-Moreira, {P. M.} and E. Quagliata and K. Prassides and R. Mariezcurrena and Mombru, {A. W.}",

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AU - Ortiz, W. A.

AU - Pardo, H.

AU - Araujo-Moreira, P. M.

AU - Quagliata, E.

AU - Prassides, K.

AU - Mariezcurrena, R.

AU - Mombru, A. W.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - 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.

AB - 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.

KW - , antiferromagnetism

KW - Spin glass

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M3 - Chapter

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SN - 9780878498277

T3 - Materials Science Forum

SP - 353

EP - 357

BT - Materials Science Forum

A2 - Missell, F.P.

PB - Trans Tech Publications Ltd

ER -

Frustrated Magnetization in PrxLa-4xBaCuOsFe

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Keywords

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