The polarization efficiency of the thermal sampling technique in thermally stimulated depolarization current measurements

• Published in: Physica. B, Condensed matter Condensed matter, 2010-03, Vol.405 (5), p.1374-1382
• Main Author: Christodoulides, C.
• Format: Article
• Language: English
• Subjects: Compensation law; Condensed matter; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Dielectric properties of solids and liquids; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Exact sciences and technology; Fractional polarization; Law; Physics; Polarization; Polarization and depolarization; Polarization efficiency; Sampling; Selectivity; Straight lines; Thermal sampling; Thermally stimulated depolarization; Thermally stimulated depolarization current; TSDC
• ISSN: 0921-4526; 1873-2135
• DOI: 10.1016/j.physb.2009.12.003

In this work, the polarization efficiency is examined for the technique of thermal sampling used in thermally stimulated depolarization current measurements, for the case where a very narrow temperature polarization window is used at the polarization temperature of T p . It is found that this has appreciable values only along a straight line in the E − ln τ 0 plane. The selectivity of the method is expressed by the widths Δ E ≈ 3 k T p and Δ ln τ 0 ≈ 3 of the distributions of the E and ln τ 0 values of the dipoles polarized by thermal sampling. A possible interpretation is also offered of the phenomenon known as compensation law, based on the selectivity characteristics of the thermal sampling technique examined in this work.