Journal
APPLIED PHYSICS LETTERS
Volume 86, Issue 9, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1866505
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A thermodynamic theory is used to determine the effective pyroelectric coefficients of polarization graded ferroelectrics, with values in excess of 0.1 mu C/cm(2) degrees C are predicted for various barium strontium titanate thin films. Maximum values closer to 0.4 mu C/cm(2) degrees C are obtained for a 1 mu m thick material-compositionally graded between pure barium titanate and one that has barium to strontium in the ratio of 75:25. (C) 2005 American Institute of Physics.
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