Dynamic pyroelectric enhancement of homogeneous ferroelectric materials
نویسندگان
چکیده
The time-dependent thermal response to a step-wise temperature increase of a ferroelectric plate of BaTiO3 of finite thickness was determined using a combination of basic heat transfer relations to model the temperature variation in the ferroelectric as a function of time and a thermodynamic model based on a modified Landau formalism to calculate the polarization profile due to the temperature gradient. An enhancement over the static pyroelectric response was revealed, having a maximum value of K0.01 mC/cm 8C, for detector thicknesses in the range of 1 to 100 mm. q 2006 Elsevier Ltd. All rights reserved. PACS: 77.70.Ca; 77.90.Ck
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تاریخ انتشار 2006