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Research Paper | Material Science and Engineering | India | Volume 3 Issue 6, June 2014 | Rating: 6.6 / 10
Study of Variation of Capacitance in (ZnO- PbCrO4) Thick Binder Layer
Dr. Ms Meenu Singh Sachan
Abstract: In this paper the variation of capacitance with different parameters like compositions; intensity of illumination; a. c frequency and temperature has been studied. The solid mixture of (ZnO- PbCrO4) was prepared by heat treatment technique. For measurement purpose the thick binder layer (cell) were fabricated in the form of parallel plate capacitors; by embedding the sensitive material in polystyrene binder and sandwiching it between aluminium plates and conducting glass plate. The best result was obtained with (75 %ZnO- 25 % PbCrO4) composition heated at 600C for 35 minute. The measurements ware carried out in frequency range 1kc/s 45kc/s with intensity of illumination upto 1200lux and at temperature between 31C to 79 C. Increase in capacitance at high frequencies suggest of dipolar relaxation effect. The capacitance in the presence of light is higher than in dark due to the presence of greater total space charge.
Keywords: Dielectrics, Capacitance, Mixed material, Thick binder layer, Radiation
Edition: Volume 3 Issue 6, June 2014,
Pages: 2610 - 2612