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

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$490,337.00
Award Year:
2007
Program:
STTR
Phase:
Phase II
Contract:
N00014-07-C-0857
Award Id:
77933
Agency Tracking Number:
N064-034-0223
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
H. C. MATERIALS CORP. (Currently H. C. Materials Corporation)
479 Quadrangle Dr., Suite-E, Bolingbrook, IL, 60440
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
011683419
Principal Investigator:
Pengdi Han
CEO
(630) 754-8621
han@hcmat.com
Business Contact:
Pengdi Han
President
(630) 754-8621
han@hcmat.com
Research Institution:
UNIV. OF ILLINOIS
David Payne
1304, West Green Street
Materials Sci. & Engr.
Urbana, IL, 61801
(217) 333-2937
Nonprofit college or university
Abstract
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 degrees 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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