Synthesis and Thermoluminescence Properties of PbCd2 –xMnxB6O12 Solid Solutions

Powders of the double borate PbCd2B6O12 and PbCd2 –xMnxB6O12 solid solutions have been prepared by solid-state reactions and the crystallographic characteristics of the synthesized phases have been determined (sp. gr. P21/n). Using differential scanning calorimetry and X-ray diffraction, the PbCd2B6O12 compound has been shown to melt incongruently at 734°C. The effect of activator ion concentration on the thermoluminescence intensity in phases of variable composition at temperatures in the range 25–400°C has been studied for the first time. The sample containing 5 mol % Mn2+ ions has been shown to offer the highest luminescence brightness in the visible spectral region.