Science and Technology Production
Congress
Authorship
DIFEO, MAURO CÉSAR
;
Madrigal Juan
;
Ramajo, Leandro
;
Castro, Miriam
Date
2025
Publishing House and Editing Place
-
Summary
Information provided by the agent in
SIGEVA
Piezoelectric materials based on lead zirconate titanate (PZT) are highly prevalent in electronic devices owing to their outstanding electrical properties, particularly in proximity to the morphotropic phase boundary (MPB) where tetragonal and rhombohedral phases meet. However, the European Union (EU) has imposed stringent regulations on hazardous substances, propelling research efforts toward lead-free piezoceramics [1]. Among the alternatives, bismuth sodium titanates (BNT) have garnered sign...
Piezoelectric materials based on lead zirconate titanate (PZT) are highly prevalent in electronic devices owing to their outstanding electrical properties, particularly in proximity to the morphotropic phase boundary (MPB) where tetragonal and rhombohedral phases meet. However, the European Union (EU) has imposed stringent regulations on hazardous substances, propelling research efforts toward lead-free piezoceramics [1]. Among the alternatives, bismuth sodium titanates (BNT) have garnered significant attention due to their polymorphic phase boundary between orthorhombic and tetragonal phases. Despite their promise, BNT ceramics present challenges such as high coercive electric fields and leakage currents, limiting their widespread adoption. To overcome these limitations, researchers have turned to (Bi0.5Na0.5)TiO3–BaTiO3 (BNT-BT) solid solutions [2]. These materials undergo a polymorphic phase transition, exhibiting favorable piezoelectric properties and emerging as viable candidates to supplant lead-based piezoelectrics. This study investigates the effects of Cu and Zr doping on BNT-BT ceramic materials, where CuO addition improves the sintering process and ZrO2 doping enhances the ferroelectric properties.
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Key Words
piezoelectriclead-freeCu doppingZr dopping