Dimorphism of RF3 (R = La–Nd) crystals based on the data of X-ray diffraction studies
- Авторы: Bolotina N.1, Chernaya T.1, Verin I.1, Khrykina O.1, Sobolev B.1
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Учреждения:
- Shubnikov Institute of Crystallography
- Выпуск: Том 61, № 1 (2016)
- Страницы: 29-34
- Раздел: Structure of Inorganic Compounds
- URL: https://journals.rcsi.science/1063-7745/article/view/189585
- DOI: https://doi.org/10.1134/S1063774516010041
- ID: 189585
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Аннотация
The ratio of two forms of tysonite in nominally pure single crystals of RF3 (R = La–Nd) obtained from melts under identical conditions (the as-grown state) is studied for the first time by X-ray diffraction. Crystals of RF3 with R = La–Nd belong to the β-LaF3 structural type (space group \(P\bar 3c1\), Z = 6) and form twins. Samples 0.2–0.4 in diameter contain inclusions of the high-temperature a form (space group P63/mmc, Z = 2). It is shown that twinning and dimorphism of the RF3 crystals (R = La–Nd) have a common structural basis.
Об авторах
N. Bolotina
Shubnikov Institute of Crystallography
Автор, ответственный за переписку.
Email: nb_bolotina@mail.ru
Россия, Leninskii pr. 59, Moscow, 119333
T. Chernaya
Shubnikov Institute of Crystallography
Email: nb_bolotina@mail.ru
Россия, Leninskii pr. 59, Moscow, 119333
I. Verin
Shubnikov Institute of Crystallography
Email: nb_bolotina@mail.ru
Россия, Leninskii pr. 59, Moscow, 119333
O. Khrykina
Shubnikov Institute of Crystallography
Email: nb_bolotina@mail.ru
Россия, Leninskii pr. 59, Moscow, 119333
B. Sobolev
Shubnikov Institute of Crystallography
Email: nb_bolotina@mail.ru
Россия, Leninskii pr. 59, Moscow, 119333