Elastic constant measurements of super ionic LiKSO4:Na single crystals


Autoria(s): Jacob, Philip; Louis, Godfrey; Varughese, G; Santhosh Kumar, A
Data(s)

13/12/2010

13/12/2010

2009

Resumo

Elastic properties of sodium doped Lithium potassium sulphate, LiK0.9Na0.1SO4, crystal has been studied by ultrasonic Pulse Echo Overlap [PEO] technique and are reported for the first time. The controversy regarding the type of crystal found while growth is performed at 35 °C with equimolar fraction of Li2SO4H2O, K2SO4 and Na2SO4 has been resolved by studying the elastic properties. The importance of this crystal is that it exhibits pyroelectric, ferroelectric and electro optic properties. It is simultaneously ferroelastic and superionic. The elastic properties of LiK0.9Na0.1SO4 crystal are well studied by measuring ultrasonic velocity in the crystal in certain specified crystallographic directions and evaluating the elastic stiffness constants, compliance constants and Poisson’s ratios. The anisotropy in the elastic properties of the crystal are well explained by the pictorial representation of the surface plots of phase velocity, slowness and linear compressibility in a-b and a-c planes.

Cochin University of Science and Technology,Mahatma Gandhi University & Catholicate College, Pathanamthitta

Identificador

Cryst. Res. Technol. 44, No. 3, 300 – 304 (2009)

http://dyuthi.cusat.ac.in/xmlui/purl/2024

DOI 10.1002/crat.200800475

Idioma(s)

en

Publicador

Wiley InterScience

Palavras-Chave #Inorganic compounds #Elasticity #Elastic constants #Growth from solutions
Tipo

Working Paper