Investigation of frequency effect on electrical fatigue and crack tip domain-switching behaviors in Pb(Mg1/3Nb2/3)0.65Ti0.35O3 ceramics via synchrotron X-ray diffraction. Issue 15 (December 2017)

• Record Type: Journal Article
• Authors: Promsawat, Methee; Promsawat, Napatporn; Jiansirisomboon, Sukanda; Namsar, Orapim; Marlton, Fred; Daniels, John; Pojprapai, Soodkhet
• Is Part Of: Journal of the European Ceramic Society. Volume 37:Issue 15(2017)
• Page Start: 4609
• Page End: 4616
• Publication Date: 2017-12
• Subjects: Electrical fatigue -- PMNT -- High-energy x-ray diffraction -- Domain switching -- Frequency effect; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2017.06.020
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: The effect of frequency on the electrical fatigue, crack growth and domain switching in Pb(Mg1/3 Nb2/3 )0.65 Ti0.35 O3 ceramics has been investigated. The changes in microstructure, ferroelectric properties and domain-switching behavior of samples fatigued at 1, 10, 50 and 100 Hz were determined. In this experiment, we found that the thickness of the damaged layer under the electrodes and the crack length decrease with increasing frequency. The remnant polarization decreases while the coercive field increases with an increasing number of loading cycles. A domain orientation map around the crack tip was revealed using scanning high-energy X-ray diffraction from a synchrotron source. This showed the effect of fatigue frequency on the lattice strain distribution and ferroelectric domain texture around the crack tip.