Magnetoresistance measurements on electrodeposited $Co_xCu_{1-x }$alloy films

• Published in: Turkish journal of physics 2001, Vol.25 (1), p.27-33
• Main Authors: BAKKALOĞLU, Ömer F, KARAHAN, İsmail H
• Format: Article
• Language: English
• Subjects: Alaşım; alloy; atomic absorption spectrometry; Atomik soğurma spektrometrisi; Atomlar ve Moleküller; Atoms and Molecules; Bakır; cobalt; copper; crystal structure; electrodeposition; Electronic Structure, Electrical, Magnetic and Optical Properties; Elektronik Yapı, Elektriksel, Manyetik ve Optik Özellikler; Elektroçöktürme; Experimental Methods and Instrumentation for Particle and Nuclear Physics; giant magnetoresistance; İnce film; Kobalt; Kristal yapı; Kuvvetli mıknatısal direnç; magnetoresistance effect; Manyetorezistans etki; Physics of Elementary Particles and Fields; Structure of Condensed Matter and Radiation Physics; Temel Parçacık ve Alan Fiziği; Temel Parçacık ve Nükleer Fizik Deney Yöntemleri ve Aletsel Uygulamaları; thin film; X-ışını kırınımı; X-ray diffraction; Yoğunlaşmış Madde Yapısı ve Radyasyon Fiziği
• ISSN: 1300-0101

$Co_xCu_{1-x }$ alloy films were prepared by using electrodeposition technique. The variations of Co and Cu contents of the films were investigated as functions of bath pH and Co content. The compositions of the alloy films were determined using an atomic absorption spectrophotometer. The crystal structures of the alloy films were analyzed using a Cu (K $\alpha$ )-X-ray diffractometer. The diffraction lines observed were only those of copper component in the alloy films. All three films showed negative magnetoresistance and a giant magnetoresistance effect on the order of 1% in $Co_{0.26}$ $Cu_{0.74}$ and 1.7% in $Co_{0.19}$ $Cu_{0.81}$ alloy films at 100K. It was also detected that the magnetoresistance effect at first increased, then decreased with increasing Co content.