The effect of CoFe2O4 and CoFe2O4/SiO2 nanoparticles on structural, linear and nonlinear optical properties of MOF-199

Abstract

CoFe2O4, CoFe2O4/SiO2, MOF-199, CoFe2O4/MOF-199 and CoFe2O4/SiO2/MOF-199 were prepared, and their characteristics have been compared. According to the results, incorporation of silica shell significantly reduced the magnetic property of CoFe2O4 particles. Moreover, incorporation of ferrites in the course of synthesis of composite did not hinder formation of MOF-199, however, morphology and textural features of the composites were distinguished from those of bare MOF-199. The nonlinear optical parameters, such as (n2,β) and susceptibility of samples were evaluated with 532 nm wavelength through the simple and accurate Z-scan technique. The values of n2 and β were measured as 10-8(cm2/W) and 10-4(cm/W), respectively. By integrating MOF into materials, the nonlinear optical characteristics of compounds can be enhanced through electron transfers and the inclusion of π-electron delocalization systems within their structure. Our results indicated the unique properties of CoFe2O4/SiO2/MOF-199, which opens possibilities for advancements in telecommunication and other fields.