Microwave-Assisted Synthesis, Microstructure, and Magnetic Properties of Rare-Earth Cobaltites

Gutiérrez Seijas, Julia; Prado-Gonjal, Jesús; Ávila Brande, David; Terry, Ian; Morán, Emilio; Schmidt, Rainer

doi:10.1021/acs.inorgchem.6b02557

Microwave-Assisted Synthesis, Microstructure, and Magnetic Properties of Rare-Earth Cobaltites

Gutiérrez Seijas, Julia; Prado-Gonjal, Jesús; Ávila Brande, David; Terry, Ian; Morán, Emilio; Schmidt, Rainer

Authors

Julia Gutiérrez Seijas

Jesús Prado-Gonjal

David Ávila Brande

Dr Ian Terry ian.terry@durham.ac.uk
Associate Professor

Emilio Morán

Rainer Schmidt

Abstract

The series of perovskite rare-earth (RE) doped cobaltites (RE)CoO3 (RE = La–Dy) was prepared by microwave-assisted synthesis. The crystal structure undergoes a change of symmetry depending on the size of the RE cation. LaCoO3 is rhombohedral, S.G. R3̅c (No. 167), while, for the rest of the RE series (Pr–Dy), the symmetry is orthorhombic, S.G. Pnma (No. 62). The crystal structure obtained by X-ray diffraction was confirmed by high-resolution transmission electron microscopy, which yielded a good match between experimental and simulated images. It is further shown that the well-known magnetism in LaCoO3, which involves a thermally induced Co3+ (d6) low spin to intermediate or high spin state transition, is strongly modified by the RE cation, and a rich variety of magnetic order has been detected across the series.

Citation

Gutiérrez Seijas, J., Prado-Gonjal, J., Ávila Brande, D., Terry, I., Morán, E., & Schmidt, R. (2017). Microwave-Assisted Synthesis, Microstructure, and Magnetic Properties of Rare-Earth Cobaltites. Inorganic Chemistry, 56(1), 627-633. https://doi.org/10.1021/acs.inorgchem.6b02557

Journal Article Type	Article
Acceptance Date	Dec 13, 2016
Online Publication Date	Dec 21, 2016
Publication Date	Jan 3, 2017
Deposit Date	Feb 14, 2017
Publicly Available Date	Dec 21, 2017
Journal	Inorganic Chemistry
Print ISSN	0020-1669
Electronic ISSN	1520-510X
Publisher	American Chemical Society
Peer Reviewed	Peer Reviewed
Volume	56
Issue	1
Pages	627-633
DOI	https://doi.org/10.1021/acs.inorgchem.6b02557

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Copyright Statement
This document is the Accepted Manuscript version of a Published Work that appeared in final form in Inorganic Chemistry, copyright © 2016 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.inorgchem.6b02557.