Modified vertical Bridgman method: time and cost effective tool for preparation of Cs.sub.2./sub.HfCl.sub.6./sub. single crystals

0536240 - FZÚ 2021 RIV NL eng J - Journal Article
Vaněček, Vojtěch - Král, Robert - Páterek, Juraj - Babin, Vladimir - Jarý, Vítězslav - Hybler, Jiří - Kodama, S. - Kurosawa, S. - Yokota, Y. - Yoshikawa, A. - Nikl, Martin
Modified vertical Bridgman method: time and cost effective tool for preparation of Cs₂HfCl₆ single crystals.
Journal of Crystal Growth. Roč. 533, Mar (2020), s. 1-6, č. článku 125479. ISSN 0022-0248. E-ISSN 1873-5002
R&D Projects: GA MŠMT EF16_013/0001406; GA MŠMT(CZ) LO1409; GA MŠMT(CZ) LM2015088; GA ČR GJ18-17555Y
Grant - others:OP VVV - SAFMAT(XE) CZ.02.1.01/0.0/0.0/16_013/0001406
Institutional support: RVO:68378271
Keywords : characterization * crystal structure * Bridgman technique * halides * scintillator materials
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 1.797, year: 2020
Method of publishing: Limited access
https://doi.org/10.1016/j.jcrysgro.2020.125479

Modification of halide μ-PD apparatus by custom made elements allowed us to grow cesium hafnium chloride (CHC) by vertical Bridgman method with significantly reduced growth time. Structural and optical properties of samples prepared from as-grown crystals were studied and compared to crystals grown by standard VB method. The X-ray diffraction confirmed the formation of cesium hafnium chloride single-phase and natural cleavage of the crystals along the (1 1 1) crystallographic plane. Photoluminescence emission, excitation, absorption, and radioluminescence spectroscopy revealed that the optical quality of the crystals grown by the modified VB method was comparable to the quality of the crystals grown by standard VB method. This setup allows the time and cost-effective material screening and it is a powerful tool for the development of new halide based single crystal scintillators.
Permanent Link: http://hdl.handle.net/11104/0314057