The Penn State Research Foundation

Patrick D Lopath

Thomas R Shrout

Seung-Eek Park

&lt;001&gt;oriented crystals of lead zinc niobate--lead titanate solid solution (0 to 5 mole % lead titanate) have high electromechanical coupling&gt;85% and exhibit electric field induced phase transition at electric field levels&gt;10.times.Ec (where Ec is the coercive field), resulting in increased transducer driving voltages, decreased fabrication degradation, and high sensitivity/large bandwidth transducer characteristics due to high electromechanical couplings, up to 92%. &lt;001&gt;oriented crystals of lead magnesium niobate--lead titanate solid solution (20 to 50 mole % lead titanate) also exhibit high electromechanical couplings&gt;85% and up to 94%, and thereby can be formed into transducers which exhibit both high sensitivity and large bandwidth.

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Port Matilda, PA, United States of America

Patrick D Lopath