Ferromagnetic Ni-doped ZnO nanoparticles synthesized by a chemical precursor method
Journal Title: Carbon - Science and Technology - Year 2013, Vol 5, Issue 2
Abstract
A simple chemical synthesis method of pristine ZnO and Ni-doped ZnO (NixZn1-xO; x = 0.01-0.05) nanoparticles is reported. Structural and morphological properties of the synthesized nanoparticles have been studied using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), vibrating sample magnetometer (VSM), and high-resolution transmission electron microscopy (HRTEM). Average crystallite size calculated from XRD peak widths using Debye Scherrer’s formula comes out to be 12 nm, 8 nm and 10 nm in pristine ZnO, Ni0.01Zn0.99O, and Ni0.05Zn0.95O samples, respectively. HRTEM images clearly show high crystalline order in the derived nanoparticles with particle size of 15- 18 nm, which are in good agreement with the XRD results. Magnetic measurements reveal that the incorporation of Ni2+ cations into the ZnO lattice results in induced room-temperature ferromagnetism in the otherwise non-magnetic ZnO.
Authors and Affiliations
Jeevan Jadhav, Mahesh Patange, Somnath Biswas
Keywords
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