Piezoeletric materials are used for a variety of actuator and sensor applications. Finding a Pb-free replacement for the popular Pb(Zr,Ti)O3 has been a major challenge for the community.
Using the Combinatorial Laser MBE, we have rapidly mapped composition phase diagrams of doped BiFeO3 and identified a novel Pb-free composition at a structural phase boundary. Piezoelectric properties at the boundary are comparable to those of Pb(Zr,Ti)O3
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