Characterisations of CoCu films electrodeposited at different cathode potentials

KARAAĞAÇ Ö., ALPER M., KÖÇKAR H.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol.322, pp.1098-1101, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 322
  • Publication Date: 2010
  • Doi Number: 10.1016/j.jmmm.2009.10.059
  • Journal Name: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1098-1101
  • Keywords: CoCu film, Electrodeposition, Crystal structure, Morphology, Magnetic property, MAGNETIC-PROPERTIES, GRANULAR ALLOYS, THIN-FILMS
  • Bursa Uludag University Affiliated: Yes

Abstract

Structural and magnetic properties of CoCu films electrodeposited on polycrystalline Cu substrates were investigated as a function of cathode potential used for their deposition. The compositional analysis, performed by energy dispersive X-ray spectroscopy, demonstrated that an increase in the deposition potential results in an increase in Co content of CoCu films. The crystal structure of the films was studied using the X-ray diffraction (XRD) technique. It was observed that they have a face centred cubic (fcc) structure, but also contain partly hexagonal close-packed phase. XRD results revealed that the (1 1 1) peak of fcc structure splits into two as Co (1 1 1) and Cu (1 1 1) peaks and the peak intensities change depending on the deposition potential and hence the film composition. The magnetic measurements were carried out at room temperature using a vibrating sample magnetometer. The magnetic findings indicated that coercivity decreases and saturation magnetisation increases with the increase of Co:Cu ratio caused by the deposition potential and also all films have planar magnetisation. (C) 2009 Elsevier B.V. All rights reserved.