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Breakthrough in understanding piezoelectric mechanism in Pb-free ferroelectrics

By Eileen De Guire / September 11, 2012

Applying a poling field (Epol) creates a rhombohedral (R)/tetragonal (T) morphotropic phase boundary in a single phase grain of (Bi½Na½)TiO3-6%BaTiO3. Such direct in-situ transmission electron microscopy observations led to the establishment of an Epol vs x phase diagram for (1-x)(Bi½Na½)TiO3–xBaTiO3. Credit: Tan; Iowa State University. Lead zirconate titanate ceramics are the “gold standard” materials for…

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