Effect of porosity on the ferroelectric and piezoelectric properties of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 piezoelectric ceramics. (1st March 2018)

• Record Type: Journal Article
• Authors: Yap, Emily W.; Glaum, Julia; Oddershede, Jette; Daniels, John E.
• Is Part Of: Scripta materialia. Number 145(2018)
• Page Start: 122
• Page End: 125
• Publication Date: 2018-03-01
• Subjects: Porous material -- Piezoelectric ceramics -- Electroceramics -- Three-dimensional tomography -- Finite element analysis; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.10.022
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: The ferroelectric and piezoelectric properties of (Ba0.85 Ca0.15 )(Zr0.1 Ti0.9 )O3 (BCZT) ceramics were measured as a function of porosity. Porous BCZT ceramics were fabricated using the sacrificial fugitive technique. Two different pore morphologies were induced by adding polymeric microspheres and fibres as the pore-forming agents. Increasing porosity led to decreasing ferroelectric and piezoelectric properties due to a reduction of polarisable BCZT ceramic available. With the benefit of being a lead-free piezoelectric material, porous BCZT ceramics may be considered for acoustic impedance matching in actuator and sensor applications, and also as a functional component in biomedical applications. Graphical abstract: