Title :
The dielectric behaviour of PbO-Bi2O3 electret system at infralow frequencies
Author :
Avanesyan, V. ; Bordovskii, G. ; Potachov, S.
Author_Institution :
Herzen State Pedagogical Univ. of Russia, St. Petersburg, Russia
Abstract :
The relation between depolarization currents dependences and a.c. dielectric properties of metal/Pb2Bi6O11/metal structures is considered by using a computer method. An empirical formula is proposed for analysis of the discharge process. Measurements indicate the existence of a non-Debye relaxation mechanism. The phenomenological theory of transient currents derived from the dark-depolarization experiments is reported. The dielectric information obtained includes the distribution of relaxation times for polycrystalline Pb2Bi6O11
Keywords :
dielectric depolarisation; dielectric polarisation; dielectric relaxation; electrets; lead compounds; photocapacitance; photoconducting materials; 1E-4 to 0.1 Hz; AC dielectric properties; Pb2Bi6O11; PbO-Bi2O3 electret system; computer method; dark-depolarization experiments; depolarization currents; dielectric behaviour; discharge process; empirical formula; infralow frequencies; metal/Pb2Bi6O11/metal structures; nonDebye relaxation mechanism; phenomenological theory; polycrystalline Pb2Bi6O11; positive photocapacitance effect; relaxation time distribution; transient currents; Conducting materials; Current measurement; Dielectric measurements; Dielectric substrates; Electrets; Electrodes; Frequency; Optical polarization; Temperature measurement; Voltage;
Conference_Titel :
Electrets, 1996. (ISE 9), 9th International Symposium on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-2695-4
DOI :
10.1109/ISE.1996.578110
