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Controlling the surface morphologies, structural and magnetic properties of electrochemically fabricated Ni–Co thin film samples via seed layer deposition

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Abstract

In this study, the influence of the seed layer deposition on the surface morphologies, structural and magnetic features of the thin film samples of Ni–Co was investigated and results are reported. The samples were produced on indium tin oxide (ITO)-coated glass substrates with and without a seed layer by electrochemical deposition technique under a constant deposition potential. To explore the effect of the seed layer current density (SLCD) on thin films, prior to actual deposition, Ni–Co seed layers were introduced on the ITO substrates at varying current densities. The EDX analysis indicated that the samples exhibited identical deposit compositions and an anomalous co-deposition behavior regardless of the SLCD. The Ni–Co samples fabricated under this study had a face centered cubic (fcc) phase structure with preferred crystallographic orientation being in the [111] direction perpendicular to the sample plane. Furthermore, the crystallite size, crystallinity, particle size and surface roughness of the samples showed a strong dependency on applied SLCD. All Ni–Co samples, irrespective of the SLCD, featured stripe magnetic domain structure and in-plane magnetic hysteresis loop with an out-of-plane magnetization component. It was also observed that while a semi-hard magnetic characteristic was detected in all samples, the coercive field varied with the SLCD.

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Acknowledgements

The authors wish to thank Dr. Malik Kaya from Eskişehir Osmangazi University for his valuable time and efforts on electrochemical growth process.

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Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, Eskişehir Osmangazi University, 26480, Eskişehir, Turkey

    Çağdaş Denizli & M. Celalettin Baykul

  2. Department of Science Education, Bartın University, 74100, Bartın, Turkey

    Umut Saraç

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  1. Çağdaş Denizli
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Denizli, Ç., Saraç, U. & Baykul, M.C. Controlling the surface morphologies, structural and magnetic properties of electrochemically fabricated Ni–Co thin film samples via seed layer deposition. J Mater Sci: Mater Electron 31, 4279–4286 (2020). https://doi.org/10.1007/s10854-020-02981-z

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