Low-temperature phase transition and magnetic properties of K.sub.3./sub.YbSi.sub.2./sub.O.sub.7./sub.

0545145 - FZÚ 2022 RIV GB eng J - Journal Article
Dabić, P. - Kahlenberg, V. - Krüger, B. - Rodić, M. - Kovač, S. - Blanuša, J. - Jagličić, Z. - Karanović, L. - Petříček, Václav - Kremenović, A.
Low-temperature phase transition and magnetic properties of K₃YbSi₂O₇.
Acta Crystallographica Section B-Structural Science Crystal Engineering and Materials. Roč. 77, č. 4 (2021), s. 584-593. E-ISSN 2052-5206
R&D Projects: GA ČR(CZ) GA18-10504S
Institutional support: RVO:68378271
Keywords : alkali rare-earth silicates * phase transition * magnetic properties * crystal field splitting * lanthanide silicates
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 2.684, year: 2021
Method of publishing: Limited access
https://doi.org/10.1107/S2052520621006077

The new ambient-temperature hexagonal (space group P63/mmc) polymorph of tripotassium ytterbium(III) disilicate (β-K3YbSi2O7) has been synthesized by the high-temperature flux method and subsequently structurally characterized. In the course of the temperature-dependent single-crystal diffraction experiments, a phase transformation of β-K3YbSi2O7 to a novel low-temperature orthorhombic phase (β'-K3YbSi2O7, space group Cmcm) has been observed at about 210 K. β-K3YbSi2O7 is isostructural with K3ErSi2O7, whereas β'-K3YbSi2O7 adopts a new type of structure.
Permanent Link: http://hdl.handle.net/11104/0321895