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Effective pyroelectric response of compositionally graded ferroelectric materials
 

Summary: Effective pyroelectric response of compositionally graded
ferroelectric materials
S. Zhong, S. P. Alpay,a
and Z.-G. Ban
Department of Materials Science and Engineering and Institute of Materials Science,
University of Connecticut, Storrs, Connecticut 06269
J. V. Mantese
Delphi Research Laboratories, Shelby Township, Michigan 48315
Received 8 November 2004; accepted 21 December 2004; published online 23 February 2005
A thermodynamic theory is used to determine the effective pyroelectric coefficients of polarization
graded ferroelectrics, with values in excess of 0.1 C/cm2
C are predicted for various barium
strontium titanate thin films. Maximum values closer to 0.4 C/cm2
C are obtained for a 1 m
thick material--compositionally graded between pure barium titanate and one that has barium to
strontium in the ratio of 75:25. 2005 American Institute of Physics.
DOI: 10.1063/1.1866505
The dramatic reduction in obtainable fabrication line
widths and unit cell dimensions, together with improved chip
yields and reduced fabrication costs has resulted in a prolif-

  

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

 

Collections: Materials Science