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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/8043
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dc.contributor.authorMenon, P. Soumya-
dc.contributor.authorKunjumon, Jibi-
dc.contributor.authorBansal, Manisha-
dc.contributor.authorNair, Sutheertha S.-
dc.contributor.authorBeryl, C.-
dc.contributor.authorVinitha, G.-
dc.contributor.authorMaity, Tuhin-
dc.contributor.authorAbraham, Priya Mary-
dc.contributor.authorSajan, D.-
dc.contributor.authorPhilip, Reji-
dc.date.accessioned2023-02-20T04:58:38Z-
dc.date.available2023-02-20T04:58:38Z-
dc.date.issued2023-02-15-
dc.identifier.citationCeramics International, 2023, Vol.49,p5815en_US
dc.identifier.issn0272-8842-
dc.identifier.urihttp://hdl.handle.net/2289/8043-
dc.descriptionRestricted Accessen_US
dc.description.abstractPristine NiO and 2% Cr doped NiO nanostructures are successfully synthesized by the modified auto–combustion method for the determination and improvement of linear and nonlinear optical behaviours, and for identifying them as suitable materials for optical limiting applications. Vibrational and linear optical properties of both nanostructures are investigated, and structural and morphological studies are carried out using XRD, FE-SEM, and HR-TEM. From the Kubelka-Munk model, the energy band gaps for pristine and doped samples are found to be 3.52 eV and 3.44 eV, respectively. Both pristine as well as Cr-doped NiO nanostructures reveal substantial nonlinear optical behaviour at the excitation wavelength of 532 nm, arising from the presence of strong reverse saturable absorption. The third order nonlinear absorption coefficients have values of the order of 10−10 m/W and 10−6 m/W, under pulsed (5 ns) and continuous wave laser excitations, respectively. These values confirm the suitability of these nanostructures for fabricating efficient optical limiting devices for safeguarding human eyes and optical sensors from hazardous laser radiation.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.urihttps://doi.org/10.1016/j.ceramint.2022.10.301en_US
dc.rights2022 Elsevieren_US
dc.subjectReverse saturable absorptionen_US
dc.subjectOptical limiteren_US
dc.subjectZ-scanen_US
dc.subjectNonlinear absorptionen_US
dc.subjectNonlinear refractionen_US
dc.titleRole of surface defects in the third order nonlinear optical properties of pristine NiO and Cr doped NiO nanostructuresen_US
dc.typeArticleen_US
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