New Material Compositions That Expand the Operating Domain of Piezoelectric Single Crystals

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-07-C-0857
Agency Tracking Number: N064-034-0223
Amount: $490,337.00
Phase: Phase II
Program: STTR
Awards Year: 2007
Solicitation Year: 2006
Solicitation Topic Code: N06-T034
Solicitation Number: N/A
Small Business Information
479 Quadrangle Dr., Suite-E, Bolingbrook, IL, 60440
DUNS: 011683419
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Pengdi Han
 (630) 754-8621
Business Contact
 Pengdi Han
Title: President
Phone: (630) 754-8621
Research Institution
 David Payne
 1304, West Green Street
Materials Sci. & Engr.
Urbana, IL, 61801
 (217) 333-2937
 Nonprofit college or university
High-drive applications for new PMN-PT piezoelectric crystals require additional bias fields due to the relatively low coercivity (EC, ~ 2 kV/cm). However, this complicates the design of Navy devices, increases the cost, and makes the devices more susceptible to electrical failure. Thus, the goals of the proposed project are to increase EC, and extend the thermal stability of PMN-PT based transducers through compositional modifications (e.g., additions of lead indium niobate). We propose a budget of $749,908 for the growth and commercialization of PIN-PMN-PT transducer crystals, 3 inch in diameter, over a 2-year period. We will subcontract to the University of Illinois at Urbana-Champaign to support work for an understanding of the role of composition and structure on domain pinning and increased coercivity. We anticipate establishing manufacturing methods for the growth of PIN-PMN-PT based crystals with high EC (3x) and improved thermal stability (i.e., with de-poling temperature above 110 °C). In addition, the piezoelectric, dielectric and elastic properties of the grown crystals will be systematically characterized to provide guidelines for their use in Navy transducer systems, and commercial ultrasound devices.

* Information listed above is at the time of submission. *

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