Properties of compacts from BaF2 nano-powder obtained by pulsed electron beam evaporation
V.G. Ilves, S.Yu. Sokovnin, S.V. Zayats, A.M. Murzakaev, Т.М. Demina, M.G. Zuev
Institute of Electrophysics of the Ural Branch of RAS
Ural Federal University named after the First President of Russia B. N. Yeltsin
The Institute of Solid State Chemistry of the Ural Branch of RAS
Abstract: In this work, a mesoporous crystalline BaF2 nanopowder with specific surface area (Sred) up to 34,8 m2/g was obtained by evaporation of targets of a micron BaF2 powder (Sred = 0,38 m2/g) of optical purity with a pulsed electron beam. Textural and thermal features of BaF2 nanopowder (before and after annealing at 200°C in air) and individual properties of compacts made from BaF2 nanopowder by pulsed magnetic pressing and static pressing are studied. By means of pulsed magnetic pressing in vacuum at a temperature of about 425°C, vitreous, opaque compacts of black color, promising for use as scintillators and dosimeters, were obtained. The effect of pressing methods on the cathodoluminescence and photoluminescence characteristics of compacts from BaF2 is studied.
Keywords: pulsed electron beam evaporation, nanocrystalline barium fluoride, textural and thermal properties of BaF2 nanopowder, luminescence of compacts from BaF2 nanopowder.
Ilves, V.G. Properties of compacts from BaF2 nano-powder obtained by pulsed electron beam evaporation / V.G. Ilves, S.Yu. Sokovnin, S.V. Zayats et al. // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials: Interuniversity collection of proceedings / Ed. by V.M. Samsonov, N.Yu. Sdobnyakov. – Tver: TSU, 2018. – I. 10. – P. 322-329.
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