Uniaxial-stress effects in a 95/5 lead zirconate titanate ceramic
The response of a lead zirconate titanate ceramic to statically applied uniaxial stresses in the range 0--0.4 GPa has been investigated. The material studied was a niobium-doped composition with the chemical formula Pb/sub 0.99/Nb/sub 0.02/(Zr/sub 0.95/Ti/sub 0.05/)/sub 0.98/O/sub 3/. Properties measured as a function of stress include electrical charge release from poled specimens, ferroelectric hysteresis-loop behavior, macroscopic strains, and ultrasonic velocities. Data from the experiments exhibit anomalous behavior at low-stress levels (0.05--0.2 GPa). Comparison with similar data obtained under conditions of hydrostatic pressure indicate that the anomalies observed in the uniaxial-stress experiments are caused by domain-reorientation processes rather than by the ferroelectric to antiferroelectric phase transition. This transition occurs at 0.32 GPa under hydrostatic-pressure conditions, but no evidence for it is seen in the uniaxial-stress measurements to 0.4 GPa. The relationship of the present results to other uniaxial-stress studies and to shock-wave studies on ferroelectric ceramics is discussed.
- Research Organization:
- Sandia Laboratories, Albuquerque, New Mexico 87185
- OSTI ID:
- 6857533
- Journal Information:
- J. Appl. Phys.; (United States), Vol. 49:9
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CERAMICS
DIELECTRIC PROPERTIES
LEAD OXIDES
ZIRCONIUM OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
FERROELECTRIC MATERIALS
HIGH PRESSURE
HYSTERESIS
MEDIUM PRESSURE
NIOBIUM OXIDES
PRESSURE DEPENDENCE
SHOCK WAVES
STRAINS
STRESSES
TITANIUM OXIDES
ULTRASONIC WAVES
CHALCOGENIDES
DIELECTRIC MATERIALS
ELECTRICAL PROPERTIES
LEAD COMPOUNDS
MATERIALS
NIOBIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SOUND WAVES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
360203 - Ceramics
Cermets
& Refractories- Mechanical Properties