Crystallographic analysis of phase transformations in danburite CaSi2B2O8

S. V. Borisov; S. A. Magarill; N. V. Pervukhina

doi:10.1134/S0022476620070070

Crystallographic analysis of phase transformations in danburite CaSi₂B₂O₈

S. V. Borisov, S. A. Magarill, N. V. Pervukhina

Лаборатория полупроводниковых и диэлектрических материалов ФФ

Результат исследования: Научные публикации в периодических изданиях › статья

Аннотация

The crystallographic analysis of the structures of danburite CaSi₂B₂O₈, which is orthorhombic (Pnma) at normal pressure, triclinic (P1 ¯) at a pressure of 25.4 GPa, and monoclinic (P2₁/c) at a pressure of 32.3 GPa, shows that they are based on a joint packing of Ca cations and O anions whose regularity increases with pressure. A common structural fragment is the configuration of atoms related by the glide reflection plane retaining for Ca and a part of O, B positions with a possible Si migration according to the seesaw mechanism (N. V. Belov).

Язык оригинала	английский
Страницы (с-по)	1059-1067
Число страниц	9
Журнал	Journal of Structural Chemistry
Том	61
Номер выпуска	7
DOI	https://doi.org/10.1134/S0022476620070070
Состояние	Опубликовано - 1 июл 2020

Доступ к документу

10.1134/S0022476620070070

Link to publication in Scopus

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Цитировать

Borisov, S. V., Magarill, S. A., & Pervukhina, N. V. (2020). Crystallographic analysis of phase transformations in danburite CaSi₂B₂O₈. Journal of Structural Chemistry, 61(7), 1059-1067. https://doi.org/10.1134/S0022476620070070

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abstract = "The crystallographic analysis of the structures of danburite CaSi2B2O8, which is orthorhombic (Pnma) at normal pressure, triclinic (P1 ¯) at a pressure of 25.4 GPa, and monoclinic (P21/c) at a pressure of 32.3 GPa, shows that they are based on a joint packing of Ca cations and O anions whose regularity increases with pressure. A common structural fragment is the configuration of atoms related by the glide reflection plane retaining for Ca and a part of O, B positions with a possible Si migration according to the seesaw mechanism (N. V. Belov).",

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AU - Borisov, S. V.

AU - Magarill, S. A.

AU - Pervukhina, N. V.

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N2 - The crystallographic analysis of the structures of danburite CaSi2B2O8, which is orthorhombic (Pnma) at normal pressure, triclinic (P1 ¯) at a pressure of 25.4 GPa, and monoclinic (P21/c) at a pressure of 32.3 GPa, shows that they are based on a joint packing of Ca cations and O anions whose regularity increases with pressure. A common structural fragment is the configuration of atoms related by the glide reflection plane retaining for Ca and a part of O, B positions with a possible Si migration according to the seesaw mechanism (N. V. Belov).

AB - The crystallographic analysis of the structures of danburite CaSi2B2O8, which is orthorhombic (Pnma) at normal pressure, triclinic (P1 ¯) at a pressure of 25.4 GPa, and monoclinic (P21/c) at a pressure of 32.3 GPa, shows that they are based on a joint packing of Ca cations and O anions whose regularity increases with pressure. A common structural fragment is the configuration of atoms related by the glide reflection plane retaining for Ca and a part of O, B positions with a possible Si migration according to the seesaw mechanism (N. V. Belov).

KW - cation and anion sublattices

KW - crystallographic analysis

KW - danburite phases under pressure

KW - pseudo symmetry

KW - stable fragments

KW - symmetry–stability

KW - SYMMETRY

KW - symmetry-stability

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