Title:	A comparative study on the optical limiting properties of different nano spinel ferrites with Z-scan technique
Authors:	Thomas, Jeevan Job Krishnan, Shiji Sridharan, K. Philip, Reji Nanadakumar, Kalarikkal
Keywords:	Magnetic materials Sol–gel chemistry Optical properties
Issue Date:	Aug-2012
Publisher:	Elsevier B.V.
Citation:	Materials Research Bulletin, 2012, Vol.47, p1855-1860
Abstract:	We report the optical limiting properties of five different spinel ferrites, NiFe2O4, Ni0.5Zn0.5Fe2O4, ZnFe2O4, Ni0.5Co0.5Fe2O4, and CoFe2O4 with an average particle grain size of 8 nm. The optical limiting properties are investigated using the open aperture Z-scan technique. The obtained nonlinearity fits to a two-photon like absorption process. Except for NiFe2O4, the observed nonlinearity has contributions from excited state absorption. The optical limiting response is also studied against particle size and the nonlinearity is found to increase with increasing particle size within the range of our investigations. On comparing the optical limiting properties, ZnFe2O4 is found to be a better candidate for the optical limiting applications. To the best of our knowledge, this is the first report where the optical limiting properties of spinel ferrites are compared
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/5096
ISSN:	0025-5408
Alternative Location:	http://dx.doi.org/10.1016/j.materresbull.2012.04.067
Copyright:	2012 Elsevier Ltd.
Appears in Collections:	Research Papers (LAMP)

Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.