Title :
Behaviour of ρ relaxation in polarization cyclic processes by TSDC
Author :
Belana, Juan ; Modarra, M. ; Colomer, Pere
Author_Institution :
Dept. de Fisica i Enginyeria Nucl., ETSEIT, Barcelona, Spain
Abstract :
It has been studied the p relaxation reproductibility of TSDC discharges obtained from PET-a and PMMA electrets formed by windowing polarization. It has been observed that this relaxation is sensitive to the sample initial conditions. Cyclic charge-discharge treatments, carried out on these samples keeping all the polarization parameters constant, results in a trapping capability increase which seems to have a purely electrical origin and it also seems to be sensitive to electrical ageing
Keywords :
dielectric polarisation; dielectric relaxation; discharges (electric); electrets; polymers; thermally stimulated currents; PET-a electrets; PMMA electrets; TSDC discharges; charge-discharge treatment; electrical ageing; relaxation; trapping capability; windowing polarization; Aging; Amorphous materials; Cooling; Electrets; Heating; Polarization; Polymers; Positron emission tomography; Temperature distribution; Thermal conductivity;
Conference_Titel :
Electrets, 1994. (ISE 8), 8th International Symposium on
Conference_Location :
Paris
Print_ISBN :
0-7803-1940-0
DOI :
10.1109/ISE.1994.514826
