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Title: Effects of the A-site cation number on the properties of Ln{sub 5/8}M{sub 3/8}MnO{sub 3} manganites

Abstract

The properties of manganites can be tuned by changing the doping level x in Ln{sub 1-x}M{sub x}MnO{sub 3}. A second mechanism allows tuning of magnetic and electronic properties, for fixed x values, by varying the average A-cation radius, <r{sub A}>. Moreover, for fixed x and <r{sub A}> values, the changes in the A-cation size variance, sigma{sup 2}, also modify the ferromagnetic and metal-insulator transition temperatures. Here, we investigate the influence of the number of A-site cations on Ln{sub 5/8}M{sub 3/8}MnO{sub 3} manganites, where x, <r{sub A}> and sigma{sup 2} values are kept constant, and in the absence of phase separation phenomena. We have found that the number of cation species at the A site (N{sub A}) has a strong influence on the width of the ferromagnetic and metal-insulator transitions, and a small influence on the average transition temperature. This behavior is opposite to that observed for increasing values of the variance sigma{sup 2} in manganites, with the same x and <r{sub A}> values, where average transition temperatures are strongly reduced. - Graphical abstract: In this paper the influence of A-site cation number is shown, see attached schematic figure, on the magnetotransport properties of T{sub c}-optimized manganites, Ln{sub 5/8}M{sub 3/8}MnO{sub 3}.

Authors:
 [1];  [2];  [1]
  1. Departamento de Quimica Inorganica, Universidad de Malaga, 29071 Malaga (Spain)
  2. Instituto de Ciencia de Materiales de Barcelona, CSIC, Campus de Bellaterra, 08193 Bellaterra, Barcelona (Spain)
Publication Date:
OSTI Identifier:
21372594
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 183; Journal Issue: 5; Other Information: DOI: 10.1016/j.jssc.2010.03.018; PII: S0022-4596(10)00096-4; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CALORIMETRY; CATIONS; MANGANESE COMPOUNDS; METALS; OXIDES; RARE EARTH COMPOUNDS; TRANSITION TEMPERATURE; CHALCOGENIDES; CHARGED PARTICLES; ELEMENTS; IONS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS

Citation Formats

Collado, J A, Garcia-Munoz, J L, and Aranda, M A.G.,. Effects of the A-site cation number on the properties of Ln{sub 5/8}M{sub 3/8}MnO{sub 3} manganites. United States: N. p., 2010. Web. doi:10.1016/j.jssc.2010.03.018.
Collado, J A, Garcia-Munoz, J L, & Aranda, M A.G.,. Effects of the A-site cation number on the properties of Ln{sub 5/8}M{sub 3/8}MnO{sub 3} manganites. United States. https://doi.org/10.1016/j.jssc.2010.03.018
Collado, J A, Garcia-Munoz, J L, and Aranda, M A.G.,. 2010. "Effects of the A-site cation number on the properties of Ln{sub 5/8}M{sub 3/8}MnO{sub 3} manganites". United States. https://doi.org/10.1016/j.jssc.2010.03.018.
@article{osti_21372594,
title = {Effects of the A-site cation number on the properties of Ln{sub 5/8}M{sub 3/8}MnO{sub 3} manganites},
author = {Collado, J A and Garcia-Munoz, J L and Aranda, M A.G.,},
abstractNote = {The properties of manganites can be tuned by changing the doping level x in Ln{sub 1-x}M{sub x}MnO{sub 3}. A second mechanism allows tuning of magnetic and electronic properties, for fixed x values, by varying the average A-cation radius, <r{sub A}>. Moreover, for fixed x and <r{sub A}> values, the changes in the A-cation size variance, sigma{sup 2}, also modify the ferromagnetic and metal-insulator transition temperatures. Here, we investigate the influence of the number of A-site cations on Ln{sub 5/8}M{sub 3/8}MnO{sub 3} manganites, where x, <r{sub A}> and sigma{sup 2} values are kept constant, and in the absence of phase separation phenomena. We have found that the number of cation species at the A site (N{sub A}) has a strong influence on the width of the ferromagnetic and metal-insulator transitions, and a small influence on the average transition temperature. This behavior is opposite to that observed for increasing values of the variance sigma{sup 2} in manganites, with the same x and <r{sub A}> values, where average transition temperatures are strongly reduced. - Graphical abstract: In this paper the influence of A-site cation number is shown, see attached schematic figure, on the magnetotransport properties of T{sub c}-optimized manganites, Ln{sub 5/8}M{sub 3/8}MnO{sub 3}.},
doi = {10.1016/j.jssc.2010.03.018},
url = {https://www.osti.gov/biblio/21372594}, journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = 5,
volume = 183,
place = {United States},
year = {Sat May 15 00:00:00 EDT 2010},
month = {Sat May 15 00:00:00 EDT 2010}
}