Strain induced enhanced ferromagnetic behavior in inhomogeneous low doped La0.95Sr0.05MnO3+delta

We report an unusual high-temperature ferromagnetic transition in bulk single-phase nanocrystalline La0.95Sr0.05MnO3+delta, achieved through localized strain and inhomogeneous Sr-doping. Magnetization measurements show a well defined transition at 290K and a broad one at similar to 150 K. HRTEM imag...

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Detalhes bibliográficos
Autor principal: Das, S. (author)
Outros Autores: Amaral, J. S. (author), De, K. (author), Willinger, M. (author), Goncalves, J. N. (author), Roy, A. (author), Dhak, P. (author), Giri, S. (author), Majumder, S. (author), Silva, C. J. R. (author), Gomes, M. J. M. (author), Mahapatra, P. K. (author), Amaral, V. S. (author)
Formato: article
Idioma:eng
Publicado em: 2017
Assuntos:
GIANT MAGNETORESISTANCE
PHASE-TRANSITION
MANGANITES
LAMNO3
SIZE
Texto completo:http://hdl.handle.net/10773/19216
País:Portugal
Oai:oai:ria.ua.pt:10773/19216
Descrição
Resumo:We report an unusual high-temperature ferromagnetic transition in bulk single-phase nanocrystalline La0.95Sr0.05MnO3+delta, achieved through localized strain and inhomogeneous Sr-doping. Magnetization measurements show a well defined transition at 290K and a broad one at similar to 150 K. HRTEM imaging reveals the strain on the highly crystalline nanometer sized grains and Sr-doping gradients, while oxygen homogeneity at the grain interfaces is confirmed by EELS-spectra. The magnetic behavior, far from the expected bulk phase diagram, shows how local doping and strain can strongly tune the macroscopic properties of a bulk material. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4793657]

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