The Effect of Fe Content in Electrodeposited CoFe/Cu Multilayers on Structural, Magnetic and Magnetoresistance Characterizations

Tekgul A., ALPER M., KÖÇKAR H., ŞAFAK HACIİSMAİLOĞLU M., KARAAĞAÇ Ö.

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, cilt.10, sa.11, ss.7783-7786, 2010 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 10 Sayı: 11
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1166/jnn.2010.2882
  • Dergi Adı: JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.7783-7786
  • Anahtar Kelimeler: Electrodeposition, CoFe/Cu Multilayers, XRD, GMR, Magnetic Properties, GIANT MAGNETORESISTANCE
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

A series of CoFe/Cu multilayers were electrodeposited on Ti substrates from the electrolytes containing their metal ion under potentiostatic control, but the Fe concentration in the electrolytes was changed from 0.0125 M to 0.2 M. The deposition was carried out in a three-electrode cell at room temperature. The deposition of Cu layers was made at a cathode potential of -0.3 V with respect to saturated calomel electrode (SCE), while the ferromagnetic CoFe layers were deposited at -1.5 V versus SCE. The structural studies by X-ray diffraction revealed that the multilayers have face-centered-cubic structure. The magnetic characteristics of the films were investigated using a vibrating sample magnetometer and their easy-axis was found to be in film plane. Magnetoresistance measurements were carried out using the Van der Pauw method at room temperature with magnetic fields up to +/- 12 kOe. All multilayers exhibited giant magnetoresistance (GMR) and the GMR values up to 8% were obtained.