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Dynamic pyroelectric enhancement of homogeneous ferroelectric materials , S. Zhong a

Summary: Dynamic pyroelectric enhancement of homogeneous ferroelectric materials
G. Akcay a
, S. Zhong a
, S.P. Alpay a,
*, J.V. Mantese b
Department of Materials Science and Engineering and Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
Delphi Research Laboratories, Shelby Township, MI 48315, USA
Received 28 September 2005; received in revised form 9 December 2005; accepted 13 January 2006 by A. Pinczuk
Available online 2 February 2006
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/cm2
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


Source: Alpay, S. Pamir - Department of Materials Science and Engineering, University of Connecticut


Collections: Materials Science