Crystal structure evolution in the van der Waals vanadium trihalides

0557986 - FZÚ 2023 RIV GB eng J - Článek v odborném periodiku
Kratochvílová, M. - Doležal, P. - Hovančík, D. - Pospíšil, J. - Bendová, A. - Dušek, Michal - Holý, V. - Sechovský, V.
Crystal structure evolution in the van der Waals vanadium trihalides.
Journal of Physics-Condensed Matter. Roč. 34, č. 29 (2022), č. článku 294007. ISSN 0953-8984. E-ISSN 1361-648X
Grant CEP: GA ČR(CZ) GA21-06083S; GA MŠMT(CZ) LM2018096
Institucionální podpora: RVO:68378271
Klíčová slova: transition-metal trihalide * low-temperature x-ray diffraction * Van der Waals material * structural transition
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 2.7, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1088/1361-648X/ac6d38

Most transition-metal trihalides are dimorphic. The representative chromium-based triad, CrCl3, CrBr3, CrI3, is characterized by the low-temperature (LT) phase adopting the trigonal BiI3-type while the structure of the high-temperature (HT) phase is monoclinic of AlCl3 type (C2/m). The structural transition between the two crystallographic phases is of the first-order type with large thermal hysteresis in CrCl3 and CrI3. We studied crystal structures and structural phase transitions of vanadium-based counterparts VCl3, VBr3, and VI3 by measuring specific heat, magnetization, and x-ray diffraction as functions of temperature and observed an inverse situation.
Trvalý link: http://hdl.handle.net/11104/0331922