Abstract
Lithium magnesium borate (LMB) glass system co-doped with the oxides of dysprosium (Dy2O3) and phosphorus (P2O5) were synthesized using melt-quenching method. Prepared samples were characterized using various techniques to determine the effects of co-dopants concentration variation on their thermoluminescence (TL) and photoluminescence (PL) properties. TL glow curves of LMB:0.5Dy sample revealed a single prominent peak at Tm=190°C, where TL intensity was enhanced by a factor of 2.5 with the increase of P2O5 concentration up to 1mol%. This enhancement was accompanied by a shift in Tm towards higher temperature. Good linearity in the range of 1–100Gy with linear correlation coefficient of 0.998 was achieved. PL spectra displayed two significant peaks centred at 481nm and 573nm. These attractive luminescence features of the proposed glass system may be useful for the development of radiation dosimetry.
•A simple glow curve exhibits a peak at 220°C and optimum intensity for 1mol% of phosphorus ions.•A good linearity up to 100Gy in the dose response with correlation coefficient ~0.998.•Two emission bands evidenced at 481nm and 573nm are assigned to 4F9/2→4H13/2 and 4F9/2→4H13/2 transitions, respectively.