Geometrically designed domain wall trap in tri-segmented nickel magnetic nanowires for spintronics devices

Autor: Manuel Vázquez, Aristotelis Patsopoulos, Farzad Nasirpouri, Cristina Bran, Ester M. Palmero, Eider Berganza Eguiarte, Seyed-Majid Peighambari-Sattari, D. Kechrakos

Publikováno v: Scientific Reports
Repositorio Institucional del Instituto Madrileño de Estudios Avanzados en Nanociencia
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Scientific Reports, Vol 9, Iss 1, Pp 1-11 (2019)
Digital.CSIC. Repositorio Institucional del CSIC

[EN] “Domain wall traps” have been engineered and well-exploited in nanostrips by creating a geometrical trapping site, e.g. a single notch along a stripe, compared to diameter-modulated (DM) cylindrical magnetic nanowires (NWs) where multi-segme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13f64283f52d19006686dbbacc557d9c
http://europepmc.org/articles/PMC6588627

Stiff modes in spinvalve simulations with OOMMF

Autor: Spyridon Mitropoulos, Kyriakos Ovaliadis, D. Kechrakos, Michael J. Donahue, Vassilis Tsiantos

Publikováno v: Physica B Condens Matter

Micromagnetic simulations are an important tool for the investigation of magnetic materials. Micromagnetic software uses various techniques to solve differential equations, partial or ordinary, involved in the dynamic simulations. Euler, Runge-Kutta,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3484f5b54dc4ba68649077be29f8e599
https://doi.org/10.1016/j.physb.2015.10.010

Exchange bias effect in cylindrical nanowires with ferromagnetic core and polycrystalline antiferromagnetic shell

Autor: A. Patsopoulos, D. Kechrakos

We model the exchange bias effect in thin cylindrical nanowires composed of a ferromagnetic core and an antiferromagnetic shell implementing a classical spin Hamiltonian and Monte Carlo simulations. We address systematically the effect of shell polyc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d535e8780b845ad25e188b5990529b5e

Field-dependent energy barriers in Co/CoO core-shell nanoparticles

Autor: Oksana Chubykalo-Fesenko, P. Nieves, D. Kechrakos

Publikováno v: Digital.CSIC. Repositorio Institucional del CSIC
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We perform atomistic modeling of Co/CoO nanoparticles with a diameter of a few nanometers and realistic values of the exchange and anisotropy parameters in order to study the field-dependent energy barriers under forward and backward reversal of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c879a2ab00c4a56ecce7c3ca83e50234
http://hdl.handle.net/10261/186844

Magnetic properties of dense nanoparticle arrays with core/shell morphology

Autor: Kalliopi N. Trohidou, M. Vasilakaki, D. Kechrakos

Publikováno v: Journal of Magnetism and Magnetic Materials. 316:e291-e294

We calculate the magnetization hysteresis for an ordered array of composite magnetic nanoparticles with a ferromagnetic (FM) core and an antiferromagnetic (AFM) shell, located on a triangular lattice and coupled via magnetostatic forces. Each nanopar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70353e27e37ca780d464b31861a14cf9
https://doi.org/10.1016/j.jmmm.2007.02.122