Influence of combined external stress and electric field on electric properties of 0.5% Fe-doped lead zirconate titanate ceramics
- Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30-084 Krakow (Poland)
- Institute of Materials Science, Technische Universitaet Darmstadt, Petersenstrase 23, 64287 Darmstadt (Germany)
Influence of uniaxial pressure (0-1000 bars) applied parallel to or perpendicularly to the ac or dc electric field (in one-dimensional or two-dimensional manner) on dielectric and ferroelectric properties of hard lead zirconate titanate (PZT) ceramics were investigated. The experimental results revealed that applying uniaxial pressure leads to a reduction in the peak intensity of the electric permittivity (epsilon), of the frequency dispersion as well as of the dielectric hysteresis. Moreover, with increasing pressure the peak intensity of epsilon becomes diffused and shifts to a higher temperature. It was also found that simultaneous application of uniaxial pressure and electric field (perpendicular to each other) in the poling process improves the ferroelectric properties. This indeed indicates new possibility for poling materials with a high coercive field and/or high electric conductivity. The effects of uniaxial load are weaker than that obtained for soft PZT ceramics. It was concluded that applying uniaxial pressure induces similar effects as increasing the Ti ion concentration in PZT system. The obtained results were interpreted through Cochran soft mode and domain switching processes under applying of pressure.
- OSTI ID:
- 21361913
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 9 Vol. 106; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CERAMICS
CHARGED PARTICLES
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
DIFFUSION
DISPERSIONS
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRIC FIELDS
ELECTRICAL PROPERTIES
ELEMENTS
FERROELECTRIC MATERIALS
HYSTERESIS
IONS
IRON
LEAD COMPOUNDS
MATERIALS
METALS
ONE-DIMENSIONAL CALCULATIONS
OXYGEN COMPOUNDS
PERMITTIVITY
PHYSICAL PROPERTIES
POLARIZATION
PZT
TITANATES
TITANIUM COMPOUNDS
TITANIUM IONS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TWO-DIMENSIONAL CALCULATIONS
ZIRCONATES
ZIRCONIUM COMPOUNDS