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


Denizli C., SARAÇ U., BAYKUL M. C.

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, cilt.31, sa.5, ss.4279-4286, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 31 Sayı: 5
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1007/s10854-020-02981-z
  • Dergi Adı: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Chemical Abstracts Core, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.4279-4286
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

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.