Authors: Schuler, V.; Milano, Julian; Coati, A.; Vlad, A.; Sauvage Simkin, M.; Garreau, Y.; Demaille, D.; Hidki, S.; Novikova, A.; Fonda, E.; Zheng, Y.; Vidal, F.
Publication Date: 2016.
Language: English.
Abstract:
The growth by pulsed laser deposition of fully epitaxial nanocomposites made of CoxNi1-x nanowires (NW) vertically self-assembled in Sr0.5Ba0.5TiO3/SrTiO3(001) layers is reported. The diameter of the wires can be tuned in the 1.8-6 nm range. The composition of the wires can be controlled, with the growth sequence and the fcc crystallographic structure of the wires preserved for Co content up to 78%. The nanocomposite systems obtained display a uniaxial magnetic anisotropy with out-of-plane easy axis as shown through analysis of ferromagnetic resonance measurements. It is shown that the magnitude of the magnetic anisotropy depends sensitively on the structural quality of the nanocomposites.The energy barrier for magnetization reversal scales as the square of the diameter of the NW and reaches 60 for 6 nm diameter, with T amb = 300 K.
Author affiliation: Schuler, V.. Universite Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia
Author affiliation: Milano, Julian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Laboratorio Internacional Franco Argentino en Nanociencias; Argentina. Universite Pierre et Marie Curie; Francia
Author affiliation: Coati, A.. Synchrotron Soleil; Francia
Author affiliation: Vlad, A.. Synchrotron Soleil; Francia
Author affiliation: Sauvage Simkin, M.. Synchrotron Soleil; Francia
Author affiliation: Garreau, Y.. Synchrotron Soleil; Francia. Université Paris Diderot - Paris 7; Francia. Centre National de la Recherche Scientifique; Francia
Author affiliation: Demaille, D.. Universite Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia
Author affiliation: Hidki, S.. Universite Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia
Author affiliation: Novikova, A.. Synchrotron Soleil; Francia
Author affiliation: Fonda, E.. Synchrotron Soleil; Francia
Author affiliation: Zheng, Y.. Universite Pierre et Marie Curie; Francia. Laboratorio Internacional Franco Argentino en Nanociencias; Argentina
Author affiliation: Vidal, F.. Laboratorio Internacional Franco Argentino en Nanociencias; Argentina. Universite Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia
Repository: CONICET Digital (CONICET). Consejo Nacional de Investigaciones Científicas y Técnicas