Growth and magnetic properties of vertically aligned epitaxial CoNi nanowires in (Sr, Ba)TiO3 with diameters in the 1.8-6 nm range

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 Year
2016
Language
English
Format
article
Status
Published version
Description
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.
Fil: Schuler, V.. Universite Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia
Fil: 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
Fil: Coati, A.. Synchrotron Soleil; Francia
Fil: Vlad, A.. Synchrotron Soleil; Francia
Fil: Sauvage Simkin, M.. Synchrotron Soleil; Francia
Fil: Garreau, Y.. Synchrotron Soleil; Francia. Université Paris Diderot - Paris 7; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Demaille, D.. Universite Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Hidki, S.. Universite Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Novikova, A.. Synchrotron Soleil; Francia
Fil: Fonda, E.. Synchrotron Soleil; Francia
Fil: Zheng, Y.. Universite Pierre et Marie Curie; Francia. Laboratorio Internacional Franco Argentino en Nanociencias; Argentina
Fil: Vidal, F.. Laboratorio Internacional Franco Argentino en Nanociencias; Argentina. Universite Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia
Subject
FERROMAGNETIC NANOWIRES
FERROMAGNETIC RESONANCE
PULSED LASER DEPOSITION
SELF-ASSEMBLY
VERTICAL EPITAXY
X-RAY ABSORPTION
X-RAY DIFFRACTION
Astronomía
Ciencias Físicas
CIENCIAS NATURALES Y EXACTAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/48779