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Title: Discontinuous evolution of the highly distorted orthorhombic structure and the magnetic order in LaMnO[sub 3[+-][delta]] perovskite

Abstract

In this work the authors present a systematic study of the crystallographic structure and the magnetic ordering of LaMnO[sub 3[+-][delta]] perovskites. Changing the oxygen composition within the range 2.995 < 3 [+-] [delta] < 3.140, they found a 3 + [delta][sub 1] value (3.04 < 3 + [delta][sub 1] < 3.05) which defines a boundary in the magnetic phase diagram T vs 3 [+-] [delta]. For 3 + [delta] < 3 + [delta][sub 1], antiferromagnetic order is present in the samples with a small ferromagnetic component, while for large 3 + [delta] values (3 + [delta] > 3 + [delta][sub 1]) the samples are ferromagnetic. The transition from one region to the other is associated with a change in volume of around 1%.

Authors:
; ; ; ;  [1]
  1. (Comision Nacional de Energia Atomica, San Carlos de Bariloche (Argentina). Centro Atomico Bariloche)
Publication Date:
OSTI Identifier:
6068128
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 146:2; Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CRYSTAL STRUCTURE; EXPERIMENTAL DATA; FERROMAGNETISM; JAHN-TELLER EFFECT; LANTHANUM OXIDES; MAGNETIC PROPERTIES; MANGANESE OXIDES; STOICHIOMETRY; TEMPERATURE DEPENDENCE; X-RAY DIFFRACTION; CHALCOGENIDES; COHERENT SCATTERING; DATA; DIFFRACTION; INFORMATION; LANTHANUM COMPOUNDS; MAGNETISM; MANGANESE COMPOUNDS; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SCATTERING; TRANSITION ELEMENT COMPOUNDS; 360202* - Ceramics, Cermets, & Refractories- Structure & Phase Studies; 360204 - Ceramics, Cermets, & Refractories- Physical Properties

Citation Formats

Prado, F., Sanchez, R.D., Caneiro, A., Causa, M.T., and Tovar, M. Discontinuous evolution of the highly distorted orthorhombic structure and the magnetic order in LaMnO[sub 3[+-][delta]] perovskite. United States: N. p., 1999. Web. doi:10.1006/jssc.1999.8386.
Prado, F., Sanchez, R.D., Caneiro, A., Causa, M.T., & Tovar, M. Discontinuous evolution of the highly distorted orthorhombic structure and the magnetic order in LaMnO[sub 3[+-][delta]] perovskite. United States. doi:10.1006/jssc.1999.8386.
Prado, F., Sanchez, R.D., Caneiro, A., Causa, M.T., and Tovar, M. Wed . "Discontinuous evolution of the highly distorted orthorhombic structure and the magnetic order in LaMnO[sub 3[+-][delta]] perovskite". United States. doi:10.1006/jssc.1999.8386.
@article{osti_6068128,
title = {Discontinuous evolution of the highly distorted orthorhombic structure and the magnetic order in LaMnO[sub 3[+-][delta]] perovskite},
author = {Prado, F. and Sanchez, R.D. and Caneiro, A. and Causa, M.T. and Tovar, M.},
abstractNote = {In this work the authors present a systematic study of the crystallographic structure and the magnetic ordering of LaMnO[sub 3[+-][delta]] perovskites. Changing the oxygen composition within the range 2.995 < 3 [+-] [delta] < 3.140, they found a 3 + [delta][sub 1] value (3.04 < 3 + [delta][sub 1] < 3.05) which defines a boundary in the magnetic phase diagram T vs 3 [+-] [delta]. For 3 + [delta] < 3 + [delta][sub 1], antiferromagnetic order is present in the samples with a small ferromagnetic component, while for large 3 + [delta] values (3 + [delta] > 3 + [delta][sub 1]) the samples are ferromagnetic. The transition from one region to the other is associated with a change in volume of around 1%.},
doi = {10.1006/jssc.1999.8386},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 146:2,
place = {United States},
year = {1999},
month = {9}
}