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

Irati Golvano-Escobal, Juan Carlos Gonzalez-Rosillo, Neus Domingo, Xavi Illa, José Francisco López-Barberá, Jordina Fornell, Pau Solsona, Lucia Aballe, Michael Foerster, Santiago Surinãch, Maria Dolors Baró, Teresa Puig, Salvador Pané, Josep Nogués, Eva Pellicer, Jordi Sort

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8 Citations (Scopus)

Abstract

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.
Original languageEnglish
Article number30398
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - 27 Jul 2016

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