Title:
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Spontaneous formation of spiral-like patterns with distinct periodic physical properties by confined electrodeposition of Co-In disks
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Author:
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Golvano Escobal, Irati; Gonzalez-Rosillo, Juan Carlos; Domingo Marimon, Neus; Illa, Xavi; López-Barbera, José Francisco; Fornell Beringues, Jordina; Solsona Mateos, Pau; Aballe, Lucía; Foerster, Michael; Baró, M. D..; Puig i Molina, Mª Teresa; Pané i Vidal, Salvador; Nogués, Josep; Pellicer Vilà, Eva Maria; Sort Viñas, Jordi
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Abstract:
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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 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. |
Subject(s):
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-Electrochemistry -Materials for devices -Surfaces, interfaces and thin films |
Rights:
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open access
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https://creativecommons.org/licenses/by/3.0/ |
Document type:
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Article |
Published by:
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Share:
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Uri:
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https://ddd.uab.cat/record/170470
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