Magnetic and Microstructural Studies on PVA/Co Nanocomposite Prepared by Ion Beam Sputtering Technique

In this paper, we report the embedment of Cobalt (Co) nanoparticles by ion beam sputtering (IBS) in poly(vinylalcohol) (PVA) substrate to prepare nanocomposite film. The Co film of 5 nm was deposited on PVA by IBStechnique. Formation of nanocrystalline Co with hcp phase is revealed in GIXRD pattern of the film which alsoindicates that there is no change in the crystalline structure of PVA even after sputtering of the metallic nanoparticles.The average particle size of Co nanoparticles as evaluated using Scherer formula is found to be about 2 nm. UVVisabsorption spectrum of the film showed SPR peaks of Co metal in their nano size level embedded in the PVAmatrix system. XPS study confirms the metallic nature of Co MOKE studies show that the nanocomposite film isferromagnetic with Hc׀׀ of. 42.8 Oe. Defence Science Journal, Vol. 64, No. 3, May 2014, pp. 290-294, DOI:http://dx.doi.org/10.14429/dsj.64.7332