Electromechanical properties of high- coupling (1-xi)Pb(Zn1/3Nb2/3)O3-xiPbTiO3 single crystals for sound projectors.

Isothermal weak field frequency sweeps were conducted over the temperature range 30 to 140 degrees C on multidomain, oriented, and poled (1-x)Pb(Zn(1/3)Nb(2/3))O(3)-xPbTiO(3) (PZN-PT) single crystals with x = 0.045, 0.06, 0.

Regularization method for measurement of structural intensity using nearfield acoustical holography.

The regularization method for measurement of structural intensity using nearfield acoustical holography is proposed. Spatial derivatives of normal displacement are necessary to obtain the structural intensity. The derivative operations amplify high-wave-number components of measurement noise.