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Article

Effect of Porosity on Functional Properties of Lead-Free Piezoelectric BaZr0.15Ti0.85O3 Porous Ceramics

1
Dielectrics, Ferroelectrics & Multiferroics Group, Faculty of Physics, Alexandru Ioan Cuza University, 11 Carol I Blvd., 700506 Iasi, Romania
2
National Institute of Research and Development for Technical Physics, 700050 Iasi, Romania
3
Research Department, Faculty of Physics, Alexandru Ioan Cuza University, 11 Carol I Blvd., 700506 Iasi, Romania
*
Author to whom correspondence should be addressed.
Materials 2020, 13(15), 3324; https://doi.org/10.3390/ma13153324
Received: 30 March 2020 / Revised: 21 July 2020 / Accepted: 23 July 2020 / Published: 26 July 2020
(This article belongs to the Special Issue Functional Electroceramics)
The present paper reports the dependence of dielectric, ferroelectric and piezoelectric properties on the porosity level in BaZr0.15Ti0.85O3 ceramics with porosity from 5% to 21%. Microporosity with 0–3 connectivity has been produced using PMMA microspheres as a sacrificial template. The functional properties (dielectric, ferroelectric and piezoelectric effect) are mostly affected by the “dilution effect”: permittivity decreases by 40% when porosity increases by 21%, and Pmax decreases from 13 to 5 µC/cm2 while the Prem is in the range of (2–8) µC/cm2. However, the reduction of the zero-field permittivity and hysteretic behaviour of ε(E) while the tunability level is still high makes from porous ceramics interesting materials for tunability application. View Full-Text
Keywords: porous ceramics; dielectric properties; DC tunability; piezoelectric coefficient porous ceramics; dielectric properties; DC tunability; piezoelectric coefficient
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MDPI and ACS Style

Curecheriu, L.; Lukacs, V.A.; Padurariu, L.; Stoian, G.; Ciomaga, C.E. Effect of Porosity on Functional Properties of Lead-Free Piezoelectric BaZr0.15Ti0.85O3 Porous Ceramics. Materials 2020, 13, 3324. https://doi.org/10.3390/ma13153324

AMA Style

Curecheriu L, Lukacs VA, Padurariu L, Stoian G, Ciomaga CE. Effect of Porosity on Functional Properties of Lead-Free Piezoelectric BaZr0.15Ti0.85O3 Porous Ceramics. Materials. 2020; 13(15):3324. https://doi.org/10.3390/ma13153324

Chicago/Turabian Style

Curecheriu, Lavinia, Vlad Alexandru Lukacs, Leontin Padurariu, George Stoian, and Cristina Elena Ciomaga. 2020. "Effect of Porosity on Functional Properties of Lead-Free Piezoelectric BaZr0.15Ti0.85O3 Porous Ceramics" Materials 13, no. 15: 3324. https://doi.org/10.3390/ma13153324

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