An X-ray scattering study of the low-temperature phase transitions of LiKSO4

Autor:	Ariete Righi, R L Moreira, A Desert, U. A. Leitão, A Gibaud
Rok vydání:	1995
Předmět:	Phase transition Ferroelasticity Condensed matter physics Chemistry Crystal growth Crystal structure Atmospheric temperature range Condensed Matter Physics Condensed Matter::Materials Science Crystallography Lattice constant General Materials Science Hexagonal lattice Monoclinic crystal system
Zdroj:	Journal of Physics: Condensed Matter. 7:8445-8452
ISSN:	1361-648X 0953-8984
Popis:	X-ray diffraction studies on solution-grown LiKSO4 have been performed between 70 K and 300 K. The lattice parameters have been obtained as a function of the temperature. The hexagonal to trigonal phase transition at 205 K is seen by a slight increase of the c lattice parameter, while the ferroelastic transition at 182 K is accompanied by the appearance of an important spontaneous elastic deformation. The deformation and the domain pattern are analysed via a 'squeezing' model of the hexagonal lattice which leads to a monoclinic lattice below Tc=182 K.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::807ccd4afd296c6ea012aee693031bce https://doi.org/10.1088/0953-8984/7/44/013 Zobrazit plný text záznamu