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Title: Co-substitution at the Mn-site in YMnO{sub 3}: Structural stability and physical properties

Abstract

Highlights: Black-Right-Pointing-Pointer Solid state synthesis of several series of hexagonal co-substituted YMn{sub 1-x}(M Prime ,M Double-Prime ){sub x}O{sub 3}. Black-Right-Pointing-Pointer Evidencing the critical parameters which govern the stabilization of the hexagonal phase. Black-Right-Pointing-Pointer Inducing a decrease of the antiferromagnetic ordering temperature by co-substitutions. -- Abstract: The YMnO{sub 3} oxide, crystallizing in the P6{sub 3}cm space group is one of the most studied multiferroic material. While these properties can be modified by substitutions at the Mn-site, the peculiar fivefold coordination appears to limit the M solubility range in YMn{sub 1-x}M{sub x}O{sub 3}. This motivated the preparation by solid state reaction of several series of co-substituted YMn{sub 1-x}(M Prime ,M Double-Prime ){sub x}O{sub 3}, which were studied using both powder X-ray diffraction and transmission electron microscopy. The cation pairs have been chosen for their ability to adopt a fivefold coordination similar to that of Mn{sup 3+} in YMnO{sub 3}, to keep a constant average trivalent oxidation state and to maintain an average cationic radius similar to that of Mn{sup 3+}. For YMn{sub 1-x}(Cu{sub 1/2}Ti{sub 1/2}){sub x}O{sub 3}, a complete solid solution is observed without cation ordering. For all other studied cation pairs, the solubility range is always reaching a minimum value ofmore » 25% for the Zn containing pairs (Zn{sub 2/3}V{sub 1/3} and Zn{sub 3/4}Mo{sub 1/4}), a maximum of 50% being reached for the Cu containing pairs (Cu{sub 2/3}V{sub 1/3}, Cu{sub 2/3}Nb{sub 1/3} and Cu{sub 3/4}W{sub 1/4}). Interestingly, the non-centrosymmetric P6{sub 3}cm space group is retained within the solubility range without generating cation ordering phenomena. These co-substitutions at the Mn{sup 3+} are found to induce a decrease of the antiferromagnetic ordering temperature, the T{sub N} variations being similar to the temperature decrease of the dielectric anomaly. Thus, these oxides are interesting candidates for the study of the multiferroic behavior of YMnO{sub 3} derivatives.« less

Authors:
 [1]
  1. CNRS - UMR 6508-CRISMAT, 14050 Caen (France)
Publication Date:
OSTI Identifier:
22212490
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 4; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANTIFERROMAGNETISM; CATIONS; DIELECTRIC MATERIALS; HEXAGONAL LATTICES; MAGNETIC PROPERTIES; MANGANESE IONS; OXIDES; POWDERS; SOLID SOLUTIONS; SOLIDS; SOLUBILITY; SPACE GROUPS; STABILITY; STABILIZATION; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Malo, S., E-mail: sylvie.malo@ensicaen.fr, ENSICAEN - UMR 6508-CRISMAT, 14050 Caen, Universite de Caen Basse-Normandie - UMR 6508-CRISMAT, 14050 Caen, Maignan, A., ENSICAEN - UMR 6508-CRISMAT, 14050 Caen, and Universite de Caen Basse-Normandie - UMR 6508-CRISMAT, 14050 Caen. Co-substitution at the Mn-site in YMnO{sub 3}: Structural stability and physical properties. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.01.015.
Malo, S., E-mail: sylvie.malo@ensicaen.fr, ENSICAEN - UMR 6508-CRISMAT, 14050 Caen, Universite de Caen Basse-Normandie - UMR 6508-CRISMAT, 14050 Caen, Maignan, A., ENSICAEN - UMR 6508-CRISMAT, 14050 Caen, & Universite de Caen Basse-Normandie - UMR 6508-CRISMAT, 14050 Caen. Co-substitution at the Mn-site in YMnO{sub 3}: Structural stability and physical properties. United States. doi:10.1016/J.MATERRESBULL.2012.01.015.
Malo, S., E-mail: sylvie.malo@ensicaen.fr, ENSICAEN - UMR 6508-CRISMAT, 14050 Caen, Universite de Caen Basse-Normandie - UMR 6508-CRISMAT, 14050 Caen, Maignan, A., ENSICAEN - UMR 6508-CRISMAT, 14050 Caen, and Universite de Caen Basse-Normandie - UMR 6508-CRISMAT, 14050 Caen. Sun . "Co-substitution at the Mn-site in YMnO{sub 3}: Structural stability and physical properties". United States. doi:10.1016/J.MATERRESBULL.2012.01.015.
@article{osti_22212490,
title = {Co-substitution at the Mn-site in YMnO{sub 3}: Structural stability and physical properties},
author = {Malo, S., E-mail: sylvie.malo@ensicaen.fr and ENSICAEN - UMR 6508-CRISMAT, 14050 Caen and Universite de Caen Basse-Normandie - UMR 6508-CRISMAT, 14050 Caen and Maignan, A. and ENSICAEN - UMR 6508-CRISMAT, 14050 Caen and Universite de Caen Basse-Normandie - UMR 6508-CRISMAT, 14050 Caen},
abstractNote = {Highlights: Black-Right-Pointing-Pointer Solid state synthesis of several series of hexagonal co-substituted YMn{sub 1-x}(M Prime ,M Double-Prime ){sub x}O{sub 3}. Black-Right-Pointing-Pointer Evidencing the critical parameters which govern the stabilization of the hexagonal phase. Black-Right-Pointing-Pointer Inducing a decrease of the antiferromagnetic ordering temperature by co-substitutions. -- Abstract: The YMnO{sub 3} oxide, crystallizing in the P6{sub 3}cm space group is one of the most studied multiferroic material. While these properties can be modified by substitutions at the Mn-site, the peculiar fivefold coordination appears to limit the M solubility range in YMn{sub 1-x}M{sub x}O{sub 3}. This motivated the preparation by solid state reaction of several series of co-substituted YMn{sub 1-x}(M Prime ,M Double-Prime ){sub x}O{sub 3}, which were studied using both powder X-ray diffraction and transmission electron microscopy. The cation pairs have been chosen for their ability to adopt a fivefold coordination similar to that of Mn{sup 3+} in YMnO{sub 3}, to keep a constant average trivalent oxidation state and to maintain an average cationic radius similar to that of Mn{sup 3+}. For YMn{sub 1-x}(Cu{sub 1/2}Ti{sub 1/2}){sub x}O{sub 3}, a complete solid solution is observed without cation ordering. For all other studied cation pairs, the solubility range is always reaching a minimum value of 25% for the Zn containing pairs (Zn{sub 2/3}V{sub 1/3} and Zn{sub 3/4}Mo{sub 1/4}), a maximum of 50% being reached for the Cu containing pairs (Cu{sub 2/3}V{sub 1/3}, Cu{sub 2/3}Nb{sub 1/3} and Cu{sub 3/4}W{sub 1/4}). Interestingly, the non-centrosymmetric P6{sub 3}cm space group is retained within the solubility range without generating cation ordering phenomena. These co-substitutions at the Mn{sup 3+} are found to induce a decrease of the antiferromagnetic ordering temperature, the T{sub N} variations being similar to the temperature decrease of the dielectric anomaly. Thus, these oxides are interesting candidates for the study of the multiferroic behavior of YMnO{sub 3} derivatives.},
doi = {10.1016/J.MATERRESBULL.2012.01.015},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 4,
volume = 47,
place = {United States},
year = {2012},
month = {4}
}