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Structure and properties of thermoluminescent calcium fluoride glass-ceramic materials

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Abstract

New types of material for use inγ-dosimetry described here are glass-ceramics and silicate glass-ceramic enamels with thermoluminescent properties containing up to 30 wt% CaF2 doped with MnO2 and rare earth oxides. The structure and thermoluminescent properties of these materials have been investigated by applying a variety of complementary methods: X-ray analysis, electron microscopy, differential thermal analysis, electron paramagnetic resonance measurements and volume dilatometry. Thermal history, i.e. phase composition and degree of crystallinity, largely determines the thermoluminescent properties of the vitro-crystalline materials investigated. Optimal heat treatment favouring appropriate crystallization leads to a maximum in thermoluminescent intensity. Completely amorphous materials containing 20 to 30 wt% CaF2 in the form of a glassy solution are devoid of any thermoluminescence. The thermoluminescent properties of natural fluorite are compared with those of synthetic materials.

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Authors and Affiliations

  1. Institute of Physical Chemistry, Bulgarian Academy of Sciences, 1040, Sofia, Bulgaria

    I. Gutzow, E. Zlateva, S. Angelov & S. Levy

  2. Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1040, Sofia, Bulgaria

    S. Levy

Authors
  1. I. Gutzow
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  2. E. Zlateva
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  3. S. Angelov
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  4. S. Levy
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Gutzow, I., Zlateva, E., Angelov, S. et al. Structure and properties of thermoluminescent calcium fluoride glass-ceramic materials. J Mater Sci 24, 1281–1286 (1989). https://doi.org/10.1007/PL00020208

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  • DOI: https://doi.org/10.1007/PL00020208

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