| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:49 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2017 Meeting
Section: Physics Education
Title:
Excel spreadsheets as a didactic tool in analyzing the dynamic evolution of
ferroelectric parameters of triglycine sulfate crystal.
Authors:
Marinel DAN(1), Luminita DAN(1), Horia ALEXANDRU(1,2)
*
Affiliation:
1) University of Bucharest, Faculty of Physics, P.O.Box MG-11, Magurele, 077125 Bucharest, Romania
2) Academy of Romanian Scientist, Romania,
E-mail
marinelot@yahoo.com
Keywords:
didactic tool, Excel spreadsheets, ferroelectric parameters, triglycine sulfate crystal
Abstract:
The study of relaxation processes involves the interpretation and analysis of a large volume of data obtained from dielectric spectroscopy. The evolution of real and imaginary components versus frequency, temperature and time, as well as the evolution of other parameters (DC conductivity, relaxation time, parameters of Cole-Cole representations, etc.) are rather difficult to follow and analyze. This analysis is usually available to researchers that have extensive experience in this field. The dynamic tracking of the evolution of these parameters leads to easier and logical understanding of different processes and links between the behaviors of different parameters. In order to present on the screen the temporal or spatial evolution of several parameters we need special soft that has to be created. Excel spreadsheets are available on the computers in the school and allow the display of a graph in short time. Using an increment / decrement button, the IF logic operator and some mathematical formulas can successively change the contents of the graphically represented columns, thus obtaining a dynamic graph showing the evolution of the desired parameters. In this paper we present a didactic tool under the Excel spreadsheets which allows analysis of the dynamic evolution of triglycine sulphate crystal parameters in the ferroelectric phase from zero Celsius to the Curie point (49 oC) of the ferroelectric transition.
|
|
|
|