Sr2Fe1+xRe1−xO6 double perovskites: magnetoresistance and (magneto)thermopower

Antoine Maignan; Christine Martin; Oleg Lebedev; Jonas Sottmann; Lucie Nataf; François Baudelet; Sylvie Hébert; Raúl E. Carbonio

doi:10.1039/C9CC00926D

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Sr₂Fe_1+xRe_1−xO₆ double perovskites: magnetoresistance and (magneto)thermopower†

Antoine Maignan,

*^a Christine Martin,^a Oleg Lebedev,^a Jonas Sottmann,

^a Lucie Nataf,^b François Baudelet,^b Sylvie Hébert

^a and Raúl E. Carbonio^c

Author affiliations

* Corresponding authors

^a CRISMAT, Laboratoire de Cristallographie et Sciences des Matériaux, UMR6508, Normandie Univ., ENSICAEN, UNICAEN, CNRS, CRISMAT, 14000 Caen, France
E-mail: antoine.maignan@ensicaen.fr

^b Synchrotron Soleil, Saint-Aubin BP 48, 91192 GIF-SUR-YVETTE Cedex, France

^c INFIQC (Consejo Nacional de Investigaciones Científicas y Técnicas [CONICET]–Universidad Nacional de Córdoba), Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre Esq. Medina Allende, Ciudad Universitaria, X5000HUA Córdoba, Argentina

Abstract

Polycrystalline Sr₂Fe_1+xRe_1−xO₆ samples have been synthesized and structurally characterized by X-ray powder diffraction, transmission electron microscopy and X-ray absorption spectroscopy. Resistivity strongly increases with x, but a large and negative magnetoresistance persists up to x = 0.33. This is discussed considering the charge delocalization in iron and rhenium t_2g orbitals.

This article is part of the themed collection: Perovskites

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Article information

DOI: https://doi.org/10.1039/C9CC00926D
Article type: Communication
Submitted: 01 二月 2019
Accepted: 24 四月 2019
First published: 24 四月 2019

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Chem. Commun., 2019,55, 5878-5881

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Sr₂Fe_1+xRe_1−xO₆ double perovskites: magnetoresistance and (magneto)thermopower

A. Maignan, C. Martin, O. Lebedev, J. Sottmann, L. Nataf, F. Baudelet, S. Hébert and R. E. Carbonio, Chem. Commun., 2019, 55, 5878 DOI: 10.1039/C9CC00926D

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Chemical Communications