TITLE

Cut directions for the optimization of piezoelectric coefficients of lead magnesium niobate–lead titanate ferroelectric crystals

AUTHOR(S)
Pengdi Han; Weiling Yan; Jian Tian; Xinling Huang; Huixin Pan
PUB. DATE
January 2005
SOURCE
Applied Physics Letters;1/31/2005, Vol. 86 Issue 5, p052902
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The representation surfaces of the piezoelectric strain coefficient (d) were calculated for [011], [001], and [111] poled lead magnesium niobate–lead titanate (PMN–PT) crystals with ∼31% PT. It was discovered that the zxt±45° cut (rotation around z axis ±45°) for [011] poled PMN–PT crystal gives a unique repolable shear piezoelectric coefficient d36 up to 2600 pC/N. The zxt 0° cut (without rotation) d31 up to -1750 pC/N was obtained for the [011] poled crystals. It was also found that an extraordinarily high shear piezoelectric coefficient d15 up to 5190 pC/N for the single-domain crystal (3 m) occurred in the zxt-22.5 cut (22.5° clockwise rotation about the x axis). These calculated results were experimentally verified.
ACCESSION #
16345407

 

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