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
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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 et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 9690
- DOI 10.1007/s10854-007-9501-4
- Persistent URL
- https://folia.unifr.ch/unifr/documents/300774
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