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New Solid Solutions of Ca3 – 1.5xEr x□0.5xB2SiO8 : Synthesis, Phase Transition under the Influence of Isomorphic Substitutions and Temperature, Thermal Expansion, and Luminescent Properties of Polymorphs. / Yukhno, V. A.; Povolotskii, A. V.; Krzhizhanovskaya, M. G.; Kolesnikov, I. E.; Bubnova, R. S.
в: Glass Physics and Chemistry, Том 46, № 5, 01.09.2020, стр. 415-423.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - New Solid Solutions of Ca3 – 1.5xEr x□0.5xB2SiO8
T2 - Synthesis, Phase Transition under the Influence of Isomorphic Substitutions and Temperature, Thermal Expansion, and Luminescent Properties of Polymorphs
AU - Yukhno, V. A.
AU - Povolotskii, A. V.
AU - Krzhizhanovskaya, M. G.
AU - Kolesnikov, I. E.
AU - Bubnova, R. S.
N1 - Funding Information: The study was supported by the Russian Foundation for Basic Research (project no. 17-03-00887 A). ACKNOWLEDGMENTS Publisher Copyright: © 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/9/1
Y1 - 2020/9/1
N2 - Abstract: A number of new solid solutions Ca3 − 1.5xErx□0.5xB2SiO8 (x = 0–0.4) based on borosilicate Ca3B2SiO8 are synthesized: homogeneous solid solutions with х = 0–0.125 are structurally similar to the low-temperature monoclinic polymorphic modification of β-Сa3B2SiO8; and at 0.16 < х < 0.25, to the high-temperature orthorhombic polymorph α-Сa3B2SiO8. High-temperature X-ray powder diffraction and high-temperature Raman spectroscopy (20–1000°C) are used to study the monoclinic-orthorhombic transition of solid solutions through the two-phase region (0.125 < х <0.16), thermal expansion of monoclinic and orthorhombic solid solutions (x = 0.1, 0.15), and their decomposition with the formation of silicate Ca2Er8(SiO4)6O2 above 990°C. According to the data of the optical spectroscopy, it is found that the intensity of the photoluminescence of erbium ions is significantly lower than the intrinsic luminescence of the borosilicate matrix in the entire studied range of concentrations of active ions.
AB - Abstract: A number of new solid solutions Ca3 − 1.5xErx□0.5xB2SiO8 (x = 0–0.4) based on borosilicate Ca3B2SiO8 are synthesized: homogeneous solid solutions with х = 0–0.125 are structurally similar to the low-temperature monoclinic polymorphic modification of β-Сa3B2SiO8; and at 0.16 < х < 0.25, to the high-temperature orthorhombic polymorph α-Сa3B2SiO8. High-temperature X-ray powder diffraction and high-temperature Raman spectroscopy (20–1000°C) are used to study the monoclinic-orthorhombic transition of solid solutions through the two-phase region (0.125 < х <0.16), thermal expansion of monoclinic and orthorhombic solid solutions (x = 0.1, 0.15), and their decomposition with the formation of silicate Ca2Er8(SiO4)6O2 above 990°C. According to the data of the optical spectroscopy, it is found that the intensity of the photoluminescence of erbium ions is significantly lower than the intrinsic luminescence of the borosilicate matrix in the entire studied range of concentrations of active ions.
KW - borosilicates
KW - erbium
KW - luminescence
KW - solid solutions
KW - thermal expansion
UR - http://www.scopus.com/inward/record.url?scp=85092715079&partnerID=8YFLogxK
U2 - 10.1134/S1087659620050132
DO - 10.1134/S1087659620050132
M3 - Article
AN - SCOPUS:85092715079
VL - 46
SP - 415
EP - 423
JO - Glass Physics and Chemistry
JF - Glass Physics and Chemistry
SN - 1087-6596
IS - 5
ER -
ID: 70836655