Abstract
Ultrasonic measurements are reported on K0.95Li0.05TaO3 in a frequency range from 107 to 109 Hz and in a temperature range from 4 K to 200 K. The data for T>or=75 K are discussed in terms of a relaxation process associated with pi /2 reorientations and quadrupole moments induced by off-centre Li impurities. Relaxation is slightly polydispersive and follows an Arrhenius law with an excitation energy of 1070 K; there is no critical retardation. The Arrhenius parameters are similar to those found for nuclear magnetic relaxation. Below 70 K the data are indicative of scattering of acoustic waves by macroscopic domains.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Paper version not known
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of physics. Condensed matter : an Institute of Physics journal
Paper Title
Journal
Date
