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High-temperature γ ↔ β′ ↔ α phase transitions in Ca2B2O5 : Thermal expansion and crystal structure of α-phase. / Yukhno, Valentina; Volkov, Sergey; Bubnova, Rimma; Povolotskiy, Alexey; Ugolkov, Valery.

In: Solid State Sciences, Vol. 121, 106726, 11.2021.

Research output: Contribution to journal › Article › peer-review

Harvard

Yukhno, V, Volkov, S, Bubnova, R, Povolotskiy, A & Ugolkov, V 2021, 'High-temperature γ ↔ β′ ↔ α phase transitions in Ca2B2O5: Thermal expansion and crystal structure of α-phase', Solid State Sciences, vol. 121, 106726. https://doi.org/10.1016/j.solidstatesciences.2021.106726

APA

Yukhno, V., Volkov, S., Bubnova, R., Povolotskiy, A., & Ugolkov, V. (2021). High-temperature γ ↔ β′ ↔ α phase transitions in Ca2B2O5: Thermal expansion and crystal structure of α-phase. Solid State Sciences, 121, [106726]. https://doi.org/10.1016/j.solidstatesciences.2021.106726

Vancouver

Yukhno V, Volkov S, Bubnova R, Povolotskiy A, Ugolkov V. High-temperature γ ↔ β′ ↔ α phase transitions in Ca2B2O5: Thermal expansion and crystal structure of α-phase. Solid State Sciences. 2021 Nov;121. 106726. https://doi.org/10.1016/j.solidstatesciences.2021.106726

Author

Yukhno, Valentina ; Volkov, Sergey ; Bubnova, Rimma ; Povolotskiy, Alexey ; Ugolkov, Valery. / High-temperature γ ↔ β′ ↔ α phase transitions in Ca2B2O5 : Thermal expansion and crystal structure of α-phase. In: Solid State Sciences. 2021 ; Vol. 121.

BibTeX

@article{ec25e82008b74865bd45aec879bc2fdb,
title = "High-temperature γ ↔ β′ ↔ α phase transitions in Ca2B2O5: Thermal expansion and crystal structure of α-phase",
abstract = "A sequence of reversible phase transitions γ ↔ β′ (at 511°С) ↔ α (at 587°С) was found in Ca2B2O5 by high-temperature X-ray powder diffraction, DSC and in the high-temperature Raman spectroscopy. The crystal structure of high-temperature modification, α-Ca2B2O5, was refined by the Rietveld method at 600°С. It is isostructural to the α-Sr2B2O5 and shows the orientational disorder of isolated B2O5 pyroborate groups. Thermal expansion is strongly anisotropic (α11 = 25, α22 = 7, α33 = 2 × 10−6 °C−1 at 400 °C) and dictated by preferential orientations of BO3 triangles in the structure.",
keywords = "Borates, Crystal structure, Phase transitions, Thermal expansion, Х-ray diffraction, BORATE, Borates, CAB4O7, CALCIUM METABORATE, Crystal structure, FUKA, LUMINESCENCE, OKAYAMA PREFECTURE, Phase transitions, Thermal expansion, X-RAY-DIFFRACTION, X-ray diffraction, Х-ray diffraction",
author = "Valentina Yukhno and Sergey Volkov and Rimma Bubnova and Alexey Povolotskiy and Valery Ugolkov",
note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Masson SAS",
year = "2021",
month = nov,
doi = "10.1016/j.solidstatesciences.2021.106726",
language = "English",
volume = "121",
journal = "Solid State Sciences",
issn = "1293-2558",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - High-temperature γ ↔ β′ ↔ α phase transitions in Ca2B2O5

T2 - Thermal expansion and crystal structure of α-phase

AU - Yukhno, Valentina

AU - Volkov, Sergey

AU - Bubnova, Rimma

AU - Povolotskiy, Alexey

AU - Ugolkov, Valery

N1 - Publisher Copyright: © 2021 Elsevier Masson SAS

PY - 2021/11

Y1 - 2021/11

N2 - A sequence of reversible phase transitions γ ↔ β′ (at 511°С) ↔ α (at 587°С) was found in Ca2B2O5 by high-temperature X-ray powder diffraction, DSC and in the high-temperature Raman spectroscopy. The crystal structure of high-temperature modification, α-Ca2B2O5, was refined by the Rietveld method at 600°С. It is isostructural to the α-Sr2B2O5 and shows the orientational disorder of isolated B2O5 pyroborate groups. Thermal expansion is strongly anisotropic (α11 = 25, α22 = 7, α33 = 2 × 10−6 °C−1 at 400 °C) and dictated by preferential orientations of BO3 triangles in the structure.

AB - A sequence of reversible phase transitions γ ↔ β′ (at 511°С) ↔ α (at 587°С) was found in Ca2B2O5 by high-temperature X-ray powder diffraction, DSC and in the high-temperature Raman spectroscopy. The crystal structure of high-temperature modification, α-Ca2B2O5, was refined by the Rietveld method at 600°С. It is isostructural to the α-Sr2B2O5 and shows the orientational disorder of isolated B2O5 pyroborate groups. Thermal expansion is strongly anisotropic (α11 = 25, α22 = 7, α33 = 2 × 10−6 °C−1 at 400 °C) and dictated by preferential orientations of BO3 triangles in the structure.

KW - Borates

KW - Crystal structure

KW - Phase transitions

KW - Thermal expansion

KW - Х-ray diffraction

KW - BORATE

KW - Borates

KW - CAB4O7

KW - CALCIUM METABORATE

KW - Crystal structure

KW - FUKA

KW - LUMINESCENCE

KW - OKAYAMA PREFECTURE

KW - Phase transitions

KW - Thermal expansion

KW - X-RAY-DIFFRACTION

KW - X-ray diffraction

KW - Х-ray diffraction

UR - http://www.scopus.com/inward/record.url?scp=85115765905&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/89b6f6a0-2a3d-313a-b476-fa7b14a273f2/

U2 - 10.1016/j.solidstatesciences.2021.106726

DO - 10.1016/j.solidstatesciences.2021.106726

M3 - Article

AN - SCOPUS:85115765905

VL - 121

JO - Solid State Sciences

JF - Solid State Sciences

SN - 1293-2558

M1 - 106726

ER -

ID: 86413274