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Calculations of Avrami exponent and applicability of Johnson-Mehl-Avrami model on crystallization in Er:LiY(PO.sub.3./sub.).sub.4./sub. phosphate glass
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SYSNO ASEP 0536253 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Calculations of Avrami exponent and applicability of Johnson-Mehl-Avrami model on crystallization in Er:LiY(PO3)4 phosphate glass Author(s) Zemenová, Petra (FZU-D) RID, ORCID
Král, Robert (FZU-D) RID, ORCID
Rodová, Miroslava (FZU-D)
Nitsch, Karel (FZU-D) RID
Nikl, Martin (FZU-D) RID, ORCID, SAINumber of authors 5 Source Title Journal of Thermal Analysis and Calorimetry. - : Akadémiai Kiadó - ISSN 1388-6150
Roč. 141, č. 3 (2020), s. 1091-1099Number of pages 9 s. Language eng - English Country HU - Hungary Keywords phosphate glass ; nucleation ; crystallization ; DSC ; Avrami exponent ; JMA model Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Materials engineering R&D Projects EF16_013/0001406 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LO1409 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2015088 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000557765400002 EID SCOPUS 85075967915 DOI 10.1007/s10973-019-09068-w Annotation Preparation and thermal properties of Er3+- doped lithium–yttrium meta-phosphate glasses with a nominal composition of Er:LiY(PO3)4 were studied as a new scintillating material for neutron detection. The glassy Er:LiY(PO3)4 ingots 10 × 10 × 25 mm3 in size were prepared by quenching of the molten mixture of the starting lithium carbonate, yttrium phosphate, and phosphorus oxide in stoichiometric relations. Crystallization kinetics was experimentally studied on powder samples with particle sizes ranging from 96 to 106 μm, 200 to 212 μm, and on bulk glassy samples using the non-isothermal differential scanning calorimetry. The evaluation of the measured data was performed using the Johnson–Mehl–Avrami, Matusita and Augis–Bennett models, and the y(α) and z(α) functions. Obtained kinetic parameters were used for reconstruction of the crystallization peaks using various models and compared with actual experimental data. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2021 Electronic address https://doi.org/10.1007/s10973-019-09068-w
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