Prof.
Wilfried Schranz
(University of Vienna, Faculty of Physics)
16/09/2015, 15:15
DyProSo2015 Main track
Talk
Since structural changes in materials usually couple to strain, acoustic spectroscopy provides a very sensitive tool for the study of dynamic properties of solids and liquids. In principle a frequency range from 0.01 Hz up to GHz or even THz can be covered with different methods, including Dynamic Mechanical Analysis (DMA) , Resonance techniques, Ultrasonics, Brillouin – and neutron...
Mr
Marcin Majka
(The Henryk Niewodniczański Institute of Nuclear Physics Polish Academy of Sciences)
16/09/2015, 15:40
DyProSo2015 Main track
Talk
A distribution of relaxation times results in a relaxation described by formulae more complex than a single decreasing exponential function. A known example is the stretched exponential function [1] often treated as a continuous linear combination of purely exponential decays [2]. An experiment providing the relaxation function and the appropriate impulse response, i.e. the response of the...
Dr
Jiri Hlinka
(Institute of Physics AS CR)
15/09/2015, 14:35
DyProSo2015 Main track
Talk
Pseudo-binary solid solutions of perovskites ferroelectrics are often showing either a ferroelectric transitions with a glassy dynamics or enhanced piezoelectric properties. Because of the demonstrated application potential of (1–x)Pb(Zn1/3Nb2/3)O3–xPbTiO3 and related materials, considerable research efforts are still payed to the understanding these phenomena.
The IR spectroscopy of such...
