Title :
The elastic stiffness coefficients related to the ferroelastic phase transition of hexagonal crystals
Author :
Ya-hui Gao ; Guo-xiang Zhou ; Mei-ling Guo ; Jia Li
Author_Institution :
Sch. of Sci., Hebei Univ. of Technol., Tianjin, China
fDate :
Oct. 30 2014-Nov. 2 2014
Abstract :
Three dimensional slowness surfaces are used to investigate ferroelastic phase transitions of hexagonal crystals. Two classes of three dimensional slowness surfaces have been found. The soft mode and the most prominent softening direction have been determined by the maximum slowness. For a hexagonal crystal, the components of the elastic stiffness coefficients c44 or c66 has direct relation with the ferroelastic phase transitions.
Keywords :
elastic constants; ferroelastic transitions; soft modes; elastic stiffness coefficients; ferroelastic phase transition; hexagonal crystals; soft mode; softening direction; three-dimensional slowness surface; Crystals; Piezoelectricity; Surface acoustic wave devices; Surface acoustic waves; Vectors; Elastic stiffness coefficients; Ferroelastic phase transition; Hexagonal crystals; Three dimensional slowness surfaces;
Conference_Titel :
Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA), 2014 Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-6424-6
DOI :
10.1109/SPAWDA.2014.6998590
