Quantizing the polarization of lead zirconate--titanate

Technical Report · Thu Dec 01 04:00:00 EST 1977

OSTI ID:5094906

Hewett, S W

The polarization of polycrystalline lead zirconate-titanate ceramics was investigated. Thin disks were sintered from compacts of calcined lead zirconate-titanate with various stoichiometry and dopants. A packing powder technique was used to control lead oxide loss during firing. The charge displaced during poling was measured using a Sawyer-Tower circuit at various poling temperatures. The resonant and antiresonant frequencies were measured 24 hrs. after poling to determine the planar coupling coefficient and mechanical quality factor for all samples. It is shown that the saturation polarization for all undoped samples is 161 ..mu..C/cm/sup 2/ regardless of the poling temperature. This value is 82% of the saturation polarization estimated for a single crystal. The piezoelectric constants show no correlation with poling temperature in the range studied as long as saturation polarization is achieved. The electric field required for saturation polarization was plotted against temperature so that the required field could be estimated at any given temperature.

• Research Organization: California Univ., Berkeley (USA). Lawrence Berkeley Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5094906
• Report Number(s): LBL-7322
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
CRYSTALS
ELECTRICITY
FABRICATION
LEAD COMPOUNDS
MONOCRYSTALS
OXYGEN COMPOUNDS
PIEZOELECTRICITY
POLARIZATION
SINTERING
TEMPERATURE DEPENDENCE
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONATES
ZIRCONIUM COMPOUNDS