ZrO2 and TiO2 modified lead-free (K0.5Na0.5)NbO3 (KNN) piezoelectric ceramics are prepared by conventional solid-state reaction. The effect of acceptor doping on structural and functional properties are investigated. A decrease in the Curie temperature and an increase in the dielectric constant values are observed when doping. More interestingly, an increase in the coercive field Ec and remanen...

In this paper, Bi2O3-doped (K0.5Na0.5)NbO3 (x = 0.1, 0.2, 0.3, 0.4) lead-free ceramics are prepared by a conventional solid-state reaction and analyzed studying the structure, ferroelectric, piezoelectric properties. It is found that doping of Bi2O3 increases proportion trigonal phase in KNN ceramics, thus enabling construction with an orthogonal–trigonal boundary at room temperature. At same t...

Ferroelectric perovskites have been ubiquitously applied in piezoelectric devices for decades, among which, eco-friendly lead-free (K,Na)NbO3-based materials recently demonstrated to be an excellent candidate sustainable development. Molecular dynamics is a versatile theoretical calculation approach the investigation of dynamical properties ferroelectric perovskites. However, molecular simulati...