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Spontaneous formation of spiral-like patterns with distinct periodic physical properties by confined electrodeposition of Co-In disks

Spatio-temporal patterns are ubiquitous in different areas of materials science and biological systems. However, typically the motifs in these types of systems present a random distribution with many possible different structures. Herein, we demonstrate that controlled spatio-temporal patterns, with...

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Detalles Bibliográficos
Autores principales: Golvano-Escobal, Irati, Gonzalez-Rosillo, Juan Carlos, Domingo, Neus, Illa, Xavi, López-Barberá, José Francisco, Fornell, Jordina, Solsona, Pau, Aballe, Lucia, Foerster, Michael, Suriñach, Santiago, Baró, Maria Dolors, Puig, Teresa, Pané, Salvador, Nogués, Josep, Pellicer, Eva, Sort, Jordi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4961954/
https://www.ncbi.nlm.nih.gov/pubmed/27462025
http://dx.doi.org/10.1038/srep30398
Descripción
Sumario:Spatio-temporal patterns are ubiquitous in different areas of materials science and biological systems. However, typically the motifs in these types of systems present a random distribution with many possible different structures. Herein, we demonstrate that controlled spatio-temporal patterns, with reproducible spiral-like shapes, can be obtained by electrodeposition of Co-In alloys inside a confined circular geometry (i.e., in disks that are commensurate with the typical size of the spatio-temporal features). These patterns are mainly of compositional nature, i.e., with virtually no topographic features. Interestingly, the local changes in composition lead to a periodic modulation of the physical (electric, magnetic and mechanical) properties. Namely, the Co-rich areas show higher saturation magnetization and electrical conductivity and are mechanically harder than the In-rich ones. Thus, this work reveals that confined electrodeposition of this binary system constitutes an effective procedure to attain template-free magnetic, electric and mechanical surface patterning with specific and reproducible shapes.