Effect Of Gamma Irradiation On Structural And Optical Properties Of Muscovite Mica

Vol.1  No.4

Year : 2014

Issue : Jan-Mar

Title : Effect Of Gamma Irradiation On Structural And Optical Properties Of Muscovite Mica

Author Name : Sukhnandan Kaur, Surinder Singh, Lakhwant Singh

Synopsis :

Present work reports the structural and optical properties of pristine and gamma irradiated muscovite mica. The XRD spectra are used to estimate structural parameters such as crystallite size and micro strain of pristine and irradiated samples. Williamson Hall analysis is employed to calculate crystallite size and micro strain of pristine and irradiated sheets. UV-VIS analysis provides the value of optical indirect, direct band gap and Urbach energy. It was found that the value of optical indirect and direct band gap increases with the increase of gamma dose upto 100 kGy and then decreases with further increase in gamma dose upto 2000 kGy. Thus, the increase of optical band gap makes natural muscovite fits for efficient optoelectronic devices.

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