Authors: Kanwal Preet Bhatti Vivek Kumar Malik Sujeet Chaudhary
Publish Date: 2007/12/05
Volume: 19, Issue: 8-9, Pages: 849-854
Abstract
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−x Co x O x ≤ 010 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 spraypyrolyzed films A correlation of the observed ferromagnetic behavior in these Zn1−x Co x O films with structural change resulting from the addition of Co is presented in this paperOne of the authors KPB acknowledges CSIR India for the research fellowship Authors also acknowledge DIT/MHRD Govt of India for financial grant and the technical support provided by Mr Nagendra Chaudhary and Mr Girija Bhushan Dash of the laboratory
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