A fluorozirconate compound TlZrF5 synthesised by a facile hydrothermal method and its characterization

초록

A single crystal of fluorozirconate compound (TlZrF5) was grown using a facile hydrothermal synthesis technique. The crystal structure of TlZrF5 was investigated through powder X-ray diffraction analysis. The Rietveld refinement process performed using Fullproof software shows that TlZrF5 crystallizes in a monoclinic crystal system with the space group of P21/c. The EDX and XPS spectral analyses were carried out to confirm the stoichiometric elemental composition of the grown crystal. The thermal properties of the crystal were examined through the TGA/DSC analysis. X-ray-induced luminescence measurements show a strong intrinsic emission peak with a maximum at 353 nm. The radiation hardness test was conducted under continuous X-ray irradiation. The room temperature photoluminescence maximum peak was found at 354 nm under the excitation of 228 nm. The decay time of the 353-nm emission of the sample was measured under the pulsed 110-keV electron beam excitation at room temperature and found to be 385 ns. The effective atomic number (Zeff) of the title compound was estimated as 64.78. For the first time, the luminescence properties of TlZrF5 have been investigated and the preliminary results allowed to suggest that this material can be used for scintillation applications.

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