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The ytterbium aluminum garnet composition YbAG (62.5 mol.% Al2O3, 37.5 mol.% Yb2O3) was prepared in the form of glass microspheres by flame synthesis. Precursor powder for flame synthesis with high homogeneity was prepared by modified sol-gel Pechini method. XRD pattern of prepared glass microspheres indicated predominantly amorphous nature of the sample. Detailed study of morphology of the microspheres by scanning electron microscopy revealed the presence of a small fraction of partially or fully crystallized microspheres. The high-temperature X-ray powder diffraction analysis (HT XRD) was carried out in the temperature interval 750-1450 degrees C: The temperature dependence of phase composition was determined. Crystallization of Yb3Al5O12-ytterbium aluminum garnet phase-was observed in the temperature range 900-1200 degrees C. The DSC analysis with heating rates 2, 4, 6, 8, 10 degrees C min(-1)in temperature interval 25-1200 degrees C was performed in N(2)atmosphere to study thermal behavior and crystallization kinetics of prepared glass microspheres. The two exothermic effects at 918 and 939 degrees C were observed, which were attributed to Yb(3)Al(5)O(12)crystallization. The crystallization kinetics of prepared sample was examined with the use of JMAK model, and the kinetic triplet-frequency factorA = (1.8 +/- 2.2) 10(+28)min(-1)(for the first peak),A = (1.2 +/- 1.6) 10(+55)min(-1)(for the second peak), apparent activation energyE(app) = (6.4 +/- 0.1) 10(+02) kJ mol(-1)(for the first peak),E-app = (1.3 +/- 0.1) 10(+03)kJ mol(-1)(for the second peak) and the Avrami coefficientm = 3 (for the first peak) andm = 2 (for the second peak)-was determined using RSS,Radj2, AIC andW(AIC)criteria.
Keywords
Physical and Theoretical Chemistry, Condensed Matter Physics, Ytterbium aluminate glasses, JMAK model, DSC, HT XRD, SEM, THERMAL-ANALYSIS, MODEL SELECTION, NUCLEATION, BEHAVIOR, GLASSES, ALUMINA, POWDERS

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MLA
Prnová, Anna, et al. “Crystallization Kinetics of Binary Yb2O3-Al2O3 Glass.” JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, vol. 142, no. 5, 2020, pp. 2141–48, doi:10.1007/s10973-020-10049-7.
APA
Prnová, A., Plško, A., Valúchová, J., Klement, R., Chromčíková, M., Mutlu, N., … Galusek, D. (2020). Crystallization kinetics of binary Yb2O3-Al2O3 glass. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 142(5), 2141–2148. https://doi.org/10.1007/s10973-020-10049-7
Chicago author-date
Prnová, Anna, Alfonz Plško, Jana Valúchová, Róbert Klement, Mária Chromčíková, Nurshen Mutlu, Melinda Majerová, Els Bruneel, and Dušan Galusek. 2020. “Crystallization Kinetics of Binary Yb2O3-Al2O3 Glass.” JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 142 (5): 2141–48. https://doi.org/10.1007/s10973-020-10049-7.
Chicago author-date (all authors)
Prnová, Anna, Alfonz Plško, Jana Valúchová, Róbert Klement, Mária Chromčíková, Nurshen Mutlu, Melinda Majerová, Els Bruneel, and Dušan Galusek. 2020. “Crystallization Kinetics of Binary Yb2O3-Al2O3 Glass.” JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 142 (5): 2141–2148. doi:10.1007/s10973-020-10049-7.
Vancouver
1.
Prnová A, Plško A, Valúchová J, Klement R, Chromčíková M, Mutlu N, et al. Crystallization kinetics of binary Yb2O3-Al2O3 glass. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY. 2020;142(5):2141–8.
IEEE
[1]
A. Prnová et al., “Crystallization kinetics of binary Yb2O3-Al2O3 glass,” JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, vol. 142, no. 5, pp. 2141–2148, 2020.
@article{8671775,
  abstract     = {{The ytterbium aluminum garnet composition YbAG (62.5 mol.% Al2O3, 37.5 mol.% Yb2O3) was prepared in the form of glass microspheres by flame synthesis. Precursor powder for flame synthesis with high homogeneity was prepared by modified sol-gel Pechini method. XRD pattern of prepared glass microspheres indicated predominantly amorphous nature of the sample. Detailed study of morphology of the microspheres by scanning electron microscopy revealed the presence of a small fraction of partially or fully crystallized microspheres. The high-temperature X-ray powder diffraction analysis (HT XRD) was carried out in the temperature interval 750-1450 degrees C: The temperature dependence of phase composition was determined. Crystallization of Yb3Al5O12-ytterbium aluminum garnet phase-was observed in the temperature range 900-1200 degrees C. The DSC analysis with heating rates 2, 4, 6, 8, 10 degrees C min(-1)in temperature interval 25-1200 degrees C was performed in N(2)atmosphere to study thermal behavior and crystallization kinetics of prepared glass microspheres. The two exothermic effects at 918 and 939 degrees C were observed, which were attributed to Yb(3)Al(5)O(12)crystallization. The crystallization kinetics of prepared sample was examined with the use of JMAK model, and the kinetic triplet-frequency factorA = (1.8 +/- 2.2) 10(+28)min(-1)(for the first peak),A = (1.2 +/- 1.6) 10(+55)min(-1)(for the second peak), apparent activation energyE(app) = (6.4 +/- 0.1) 10(+02) kJ mol(-1)(for the first peak),E-app = (1.3 +/- 0.1) 10(+03)kJ mol(-1)(for the second peak) and the Avrami coefficientm = 3 (for the first peak) andm = 2 (for the second peak)-was determined using RSS,Radj2, AIC andW(AIC)criteria.}},
  author       = {{Prnová, Anna and Plško, Alfonz and Valúchová, Jana and Klement, Róbert and Chromčíková, Mária and Mutlu, Nurshen and Majerová, Melinda and Bruneel, Els and Galusek, Dušan}},
  issn         = {{1388-6150}},
  journal      = {{JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY}},
  keywords     = {{Physical and Theoretical Chemistry,Condensed Matter Physics,Ytterbium aluminate glasses,JMAK model,DSC,HT XRD,SEM,THERMAL-ANALYSIS,MODEL SELECTION,NUCLEATION,BEHAVIOR,GLASSES,ALUMINA,POWDERS}},
  language     = {{eng}},
  number       = {{5}},
  pages        = {{2141--2148}},
  title        = {{Crystallization kinetics of binary Yb2O3-Al2O3 glass}},
  url          = {{http://doi.org/10.1007/s10973-020-10049-7}},
  volume       = {{142}},
  year         = {{2020}},
}

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