INFLUENCE OF DEPOSITION RATE ON THE FORMATION AND INTERFACE STRUCTURE OF NiCo THIN FILMS ON Ni
Abstract
Molecular dynamics simulations were performed to investigate the effect of deposition rate on the growth of Ni₅₀Co₅₀ thin films on a Ni(001) substrate. Deposition rates from 5 to 25 atoms/ps were examined at 300 K with an incident energy of 2 eV. Higher deposition rates increased surface roughness, structural disorder, and interfacial atomic mixing, whereas lower rates promoted smoother films and sharper interfaces. These findings provide atomistic insights into thin-film growth and guidance for optimizing NiCo coating deposition.
References
Nayak, C., Biswas, A., Kumar, R., Sarkar, S. K., & Bhattacharyya, D., “Co-Ni co-sputter deposited bimetallic thin film catalysts for alkaline hydrogen and oxygen evolution reactions,” Electrochimica Acta, vol. 492, p. 144333, 2024.
Mbugua, N. S., Kang, M., Zhang, Y., Ndiithi, N. J., V. Bertrand, G., & Yao, L., “Electrochemical deposition of Ni, NiCo alloy and NiCo–ceramic composite coatings—A critical review,” Materials, vol. 13(16), p. 3475, 2020.
Chen, Y., Cai, Z., Li, H., Sun, G., Zhao, L., Han, S., ... & Lian, J., “Optimizing mechanical and tribological properties of electrodeposited NiCo alloy coatings by tailoring hierarchical nanostructures,” Surface and Coatings Technology, vol. 450, p. 129027, 2022.
Ölçen, K. K., & Dikici, T., “Evaluation of the shielding effectiveness of electrodeposited Zn-Ni, Zn–Co, Ni–Co, and Zn–Ni–Co alloy coatings,” Journal of Materials Science: Materials in Electronics, vol. 35(19), p. 1376, 2024.
Chen, Y., Yang, H., Feng, H., Yang, P., Zhang, J., & Shu, B., “Electrodeposition and corrosion performance of Ni-Co alloys with different cobalt contents,” Materials Today Communications, vol. 35, p. 106058, 2023.
Weng, Z., Zhang, F., Xu, C., & Zhou, J., “The effect of incident energy, incident angle and substrate temperature on surface morphology and atomic distribution of NiTi films,” Materials & Design, vol. 187, p. 108350, 2020.
Ait Ichou, M., Mes-adi, H., Saadouni, K., & Mazroui, M. H., “Deposition of TiNi thin films on Ni (001) substrate using molecular dynamics simulation,” Physica B: Condensed Matter, vol. 671, p. 415365, 2023.
Mes-adi, H., Saadouni, K., & Mouhib, T., “A numerical investigation into the growth of TiNi thin films using molecular dynamics,” Journal of Crystal Growth, vol. 667, p. 128218, 2025.
Liang, C., Tian, Z., Zheng, Q., Wang, J., Fu, M., Ai, Y., & Dong, K., “Molecular dynamics simulation of mechanical properties of NiCo alloy under primary cascade damage,” Vacuum, vol. 230, p. 113681, 2024.
Pham, A. V., Fang, T. H., Nguyen, V. T., & Chen, T. H., “Mechanical characteristics of Ni50Co50/Ni substrate during indentation by molecular dynamics,” Modelling and Simulation in Materials Science and Engineering, vol. 30(4), p. 045006, 2022.
Nobin, M. N. M., Ali, M. L., & Alam, M. K., “Edge dislocations, alloy composition, and grain boundaries effects on the mechanical properties in NiCo binary alloy,” Scientific Reports, vol. 14(1), p. 27790, 2024.
Lablali, M., Mes-Adi, H., & Mazroui, M., “Effect of deposition rate and annealing on Nb thin film growth on Cu substrate: Molecular dynamics simulation,” Vacuum, vol. 229, p. 113548, 2024.