Estimation of kinetic parameters from thermoluminescence glow curves of pure and Eu³⁺ doped barium zirconate titanate (BZT)

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• 作者：G. Nag Bhargavi^a ; Ayush Khare^a ; ^{akhare.phy@nitrr.ac.in" class="auth_mail" title="E-mail the corresponding author} ; ^{ayushkhare139@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Namita Brahme^b
• 关键词：78.20.-e ; 68.37.Hk ; 68.37.Og ; 61.82.Rx
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：129
• 期：Complete
• 页码：83-92
• 全文大小：2094 K

文摘

Herein, we report on the thermoluminescence (TL) characteristics of pure and Eu³⁺ doped barium zirconate titanate (BZT: Eu) powder samples synthesised by solid state reaction technique (SSRT) at a temperature of 1300 °C. From the X-ray diffraction (XRD) spectra, the crystalline form of the powder possessing cubic structure was observed. The field emission scanning electron microscopy (FESEM) images show the agglomeration of the particles while high resolution transmission electron microscopy (HRTEM) reveals formation of well-organized super-lattices. The TL glow curves of the powder samples are obtained upon irradiation with ultraviolet (UV) light for different times. The TL glow curves so obtained were deconvoluted to get multiple peaks. The kinetic parameters of the glow curves were calculated by Chen’s Peak Shape Method. The glow curves for the two samples are found to obey second order kinetics.