Co- doped ZnO nanostructures with magnetic properties by electrochemical route

Simimol, A and Murali, K and Chowdhury, P and Barshilia, Harish C (2013) Co- doped ZnO nanostructures with magnetic properties by electrochemical route. In: NSEST 2013, 2013-08-23, IISc, Bangalore.

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We present the fabrication of highly oriented wurtzite ZnO nanorods by electrodeposition using Zn(NO3)2 as the electrolyte. The ZnO nanostructures were synthesized with different Co doping concentrations on high purity Cu foil and ITO coated glass substrates. We have studied in detail the effects of Co doping on the morphology, structure and magnetic properties of ZnO nanocoatings. The surface morphology and the presences of Co content in the coatings were reported using the field emission scanning electron microscopy (FESEM) and energy dispersive spectroscopy (EDS), respectively. The significant changes in morphologies of ZnO coatings can be effectively controlled by varying the concentrations of the dopant. The X-ray diffraction data demonstrate the incorporation of dopant in the wurtzite structure of ZnO. Moreover, the studies on the magnetic properties of Co doped ZnO samples were carried out using vibrating sample magnetometer (VSM) in order to determine the contributions of oxygen vacancy related defects. A clear ferromagnetic behavior is observed with a coercivity of 356 gauss for a concentration of 0.5 mM CoSO4 doped ZnO on high purity copper foil.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Nanostructures;Electrochemical;Vibrating sample magnetometer (VSM)
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Mrs Manoranjitha M D
Date Deposited: 29 Jul 2015 05:14
Last Modified: 29 Jul 2015 05:14

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