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International Journal Of Chemistry, Mathematics And Physics(IJCMP)

Thermoluminescence in Pure and Nd+3 + K+ Doped Lead Germanate Single Crystals

Aarti Wazalwar


International Journal of Chemistry, Mathematics And Physics(IJCMP), Vol-4,Issue-6, November - December 2020, Pages 122-126 , 10.22161/ijcmp.4.6.3

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Article Info: Received: 11 Nov 2020; Received in revised form: 03 Dec 2020; Accepted: 12 Dec 2020; Available online: 23 Dec 2020

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Pure lead germanate was grown by Zochralski’stechnique.Nd+3 + K+ doped lead germanate was grown for comparative studies. Thermoluminescence studies were conducted on pure lead germanate and Nd+3 + K+ doped lead germanate. Thermoluminescence in pure lead germanate single crystals (LG) and Nd+3 + K+ doped lead germanate single crystals (DDLG) has been measured in terms of photomultiplier output current on Thermoluminescence Set Up. Thermoluminescence studies of LG revealed an increasing trend of Thermoluminescence output, with increasing temperature and sharp consistent maxima at 50°C and 100°C. TL studies of DDLG revealed a decreasing trend of Thermoluminescence output, with increasing temperature and a sharp consistent peak at 100°C and 120°C. It was further noted that doping increased Thermoluminescence output. Thermoluminescence in ferroelectric lead germanate was attributed to change in polarization with change in temperature and creation of defect states.

lead germanate, thermoluminescence, doping, polarization, defect states.

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