Characterisations of CoCu films electrodeposited at different cathode potentials

KARAAĞAÇ Ö., ALPER M., KÖÇKAR H.

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

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 322
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.jmmm.2009.10.059
  • Dergi Adı: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1098-1101
  • Anahtar Kelimeler: CoCu film, Electrodeposition, Crystal structure, Morphology, Magnetic property, MAGNETIC-PROPERTIES, GRANULAR ALLOYS, THIN-FILMS
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

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.