Journal article

Cobalt substituted ZnO thin films: a potential candidate for spintronics

  • Bhatti, Kanwal Preet Thin Film Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi, India
  • Malik, Vivek Kumar Department of Physics, University of Fribourg, Switzerland
  • Chaudhary, Sujeet Thin Film Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi, India
    05.12.2007
Published in:
  • Journal of Materials Science: Materials in Electronics. - 2008, vol. 19, no. 8-9, p. 849-854
English Cobalt doped zinc oxide thin films have been deposited using spray pyrolysis method. These single phasic films exhibited [100] preferential texture and small decrease in the lattice parameter on cobalt substitution. The films having different Co concentration have almost similar surface morphology and microstructure. These Zn1−xCoxO (x ≤ 0.10) thin films distinctly showed ferromagnetic character at room temperature. The optical transmission measurements of these films clearly proved that in these films Co substitutes for Zn²⁺ and exists in +2 state. Based on the optical, structural and magnetic measurements, the possibility of occurrence of ferromagnetic ordering due to cobalt clustering is ruled out in these spray-pyrolyzed films. A correlation of the observed ferromagnetic behavior in these Zn1−xCoxO films with structural change resulting from the addition of Co is presented in this paper.
Faculty
Faculté des sciences
Department
Physique
Language
  • English
Classification
Physics
License
License undefined
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Persistent URL
https://folia.unifr.ch/unifr/documents/300774
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