Nonlinear Optical Characteristics of Magnesium – Zinc Nano composites

Rintu Mary Sebastian; Mathew S; P Radhakrishnan; E M Mohammed

Volume : VI, Issue : I, January - 2016

Nonlinear Optical Characteristics of Magnesium – Zinc Nano composites

Rintu Mary Sebastian, Mathew S, P Radhakrishnan, E M Mohammed

Abstract :

In this paper we report the nonlinear optical properties of Mg – Zn nano crystalline mixed ferrites Prepared by sol–gel technique. The XRD patterns revealed the absence of any impurity peak and points to the formation of pure cubic spinel structure in all the compounds. XRF analysis confirmed the purity of the samples. Saturation magnetization and remanence decreased with zinc doping. The optical limiting properties are investigated using the open aperture z – scan technique. The optical nonlinearity increased and the material shows better optical limiting characteristics at higher zinc doping concentrations. The values of optical limiting parameters of Mg – Zn nano composite makes it a potential material for the development of nonlinear optical devices with a relatively small limiting threshold. To the best of our knowledge a systematic variation of the optical limiting property with doping Concentration has not been reported elsewhere.