Remarkable Strontium B-Site Occupancy in Ferroelectric Pb(Zr(1-X)Ti(X))O(3) Solid Solutions Doped With Cryolite-Type Strontium Niobate

Journal Article · Wed Jun 03 04:00:00 EDT 2009 · J. Amer. Ceramic Soc 90:3959,2007

OSTI ID:953930

Feltz, A; Schmidt-Winkel, P; Schossmann, M; Booth, C H; Albering, J H

New high-performance ferroelectric solid solutions based on Pb(Zr{sub 1-x}Ti{sub x})O{sub 3} (PZT), which are doped with cryolite-type strontium niobate (SNO, Sr{sub 4}(Sr{sub 2-2y/3}Nb{sub 2+2y/3})O{sub 11+y}V{sub O;1-y} with 0{<=}y{<=}1) and hence denoted PZT:SNO, and their microscopic structure and defect chemistry are described. Extended X-ray absorption fine-structure (EXAFS) analyses of PZT:SNO samples revealed that -10% of Sr{sup 2+} occupy the nominal B-sites of the perovskite-type PZT host lattice. This result is supported by EXAFS analyses of both a canonical SrTiO{sub 3} perovskite and two SNO model and reference compounds. Fit models that do not account for Sr{sup 2+} on B-sites are ruled out. A clear Sr-Pb peak in Fourier-transformed EXAFS data visually confirms this structural model. The generation of temporary oxygen vacancies and the intricate defect chemistry induced by SNO-doping of PZT are crucial for the exceptional material properties of PZT:SNO. As a result, ferroelectric PZT:SNO solid solutions are very attractive for use in new and innovative piezoelectric actuator and transducer applications.

• Research Organization: Stanford Linear Accelerator Center (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 953930
• Report Number(s): SLAC-REPRINT-2009-462
• Journal Information: J. Amer. Ceramic Soc 90:3959,2007, Journal Name: J. Amer. Ceramic Soc 90:3959,2007 Journal Issue: 12 Vol. 90; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION
ACTUATORS
DEFECTS
DOPED MATERIALS
FINE STRUCTURE
NIOBATES
OXYGEN
Other
OTHER
PEROVSKITE
PZT
SOLID SOLUTIONS
STRONTIUM
STRUCTURAL MODELS
TRANSDUCERS
VACANCIES