The Penn State Research Foundation

Trs Technologies, Inc.

Richard J Meyer, Jr

Thomas R Shrout

Wesley S Hackenberger

Shujun Zhang

Jun Luo

Nevin P Sherlock

David J Van Tol

A &#x3c;110&#x3e; domain engineered relaxor-PT single crystals having a dielectric loss of about 0.2%, a high electromechanical coupling factor greater than about 85%, and high mechanical quality factor greater than about 500 is disclosed. In one embodiment, the relaxor-PT material has the general formula, Pb(BB)O&#x2014;Pb(B)O, where Bmay be one ion or combination of Mg, Zn, Ni, Sc, In, Yb, Bmay be one ion or combination of Nb, Ta, W, and Bmay be Tior combination of Tiwith Zrand/or Hf.

Relaxor-PT ferroelectric single crystals

An electroacoustic transducer having a tail mass, a head mass and at least two parallelepiped shaped piezoelectric material elements disposed between and attached to the tail mass and the head mass is provided. The tail mass has a body extending between a first end and a second end, the body having a cavity with a cavity wall and the cavity extending from the first end towards the second end. The head mass has a head and an elongated shaft attached to and extending from the head, the shaft having a shaft axis and being located at least partially within the cavity of the tail mass. The at least two parallelepiped shaped piezoelectric material elements are made from a piezoelectric material having a non-zero dshear piezoelectric coefficient where the dcoefficient can be d, dor d.

Acoustic transducer

Growing community of inventors

State College, PA, United States of America

Richard J Meyer, Jr