Synthesis and thermoluminescence properties of CdB4O7:Tb3+ and CdB4O7:Mn2+ |
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Authors: | T. N. Khamaganova T. G. Khumaeva A. K. Subanakov A. V. Perevalov |
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Affiliation: | 1.Baikal Institute of Nature Management, Siberian Branch,Russian Academy of Sciences,Buryat Republic,Russia;2.Geological Institute, Siberian Branch,Russian Academy of Sciences,Buryat Republic,Russia |
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Abstract: | Polycrystalline samples of undoped, terbium-doped (CdB4O7:Tb3+), and manganese-doped (CdB4O7:Mn2+) cadmium tetraborate have been prepared by solid-state reactions at 850°C. Using differential scanning calorimetry and X-ray diffraction, we have determined the melting point of CdB4O7 (t m = 976°C) and shown that this compound melts incongruently. The observed monotonic decrease in the orthorhombic cell parameters of the doped materials indicates the formation of substitutional solid solutions (sp. gr. Pbca). The thermoluminescence intensity of the doped materials has been shown to depend on the nature and concentration of the activators and the irradiation time. |
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