0.37BF-0.31PMN-0.32PT: A superior piezo-/pyro-/ferro-electric ternary ceramic at MPB. Issue 15 (15th October 2018)

• Record Type: Journal Article
• Authors: Joseph, Abhilash J.; Sinha, Nidhi; Goel, Sahil; Hussain, Abid; Kumar, Binay
• Is Part Of: Ceramics international. Volume 44:Issue 15(2018)
• Page Start: 18633
• Page End: 18640
• Publication Date: 2018-10-15
• Subjects: B. Grain size -- B. Electron microscopy -- C. Ferroelectric properties -- C. Piezoelectric properties -- True-remanent hysteresis; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.07.089
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: A near morphotropic phase boundary composition 0.37BF-0.31PMN-0.31PT has been synthesized using the conventional solid-state reaction method. Scanning electron microscopy revealed a dense microstructure of the ternary ceramic system. A high piezoelectric coefficient (d33 * = 572 pm/V) was revealed from the displacement-voltage curve (butterfly loop). An excellent pyroelectric response was displayed by the ceramic in the temperature range of 30–80 °C. Good saturated ferroelectric loops with good fatigue resistant characteristic and high value of remanent polarization (Pr = 60.62 μC/cm 2 ) and coercive field (Ec = 18.77 kV/cm) were obtained for the synthesized ceramic. Apart from the conventional method used for reporting the Pr value, which is normally larger than the practically usable (remanent) polarization component, true-remanent hysteresis task was used to isolate the non-remanent component and hence reveal the true-remanent component of polarization which was found to be ~ 80% that of the conventional Pr value suggesting low leakage contributions in the ternary ceramic system. Time-dependent compensated hysteresis task was performed to study the resistive-leakage nature of the ceramic, which is a frequency dependent parameter. Graphical abstract: fx1