Lead zirconate titanate (PZT) diagrams

Case contributed by David McGrath
Modality: Diagram

Lead zirconate titanate (PZT) is an inorganic, ceramic, piezoelectric, crystal used in ultrasound transducers.   The chemical formula of PZT is Pb[Zr(x), Ti(1-x)]O3   e.g. PbZr(0..52)Ti(0.48) O3.  Each individual PZT lattice cell has piezoelectric potential due to the dipole created by asymmetry of the position of it's atoms.  Newly-formed PZT crystals are a mixture of rhombohedral and tetragonal lattice cells due to a random orientation of their dipoles. Zr atoms tend to form rhombohedral cells and Ti atoms tend to form tetragonal cells. Before PZT can be used in ultrasound transducers it must be poled, in a process using heat and an electric field, to align the atom dipoles. 

Case Discussion

Author: David McGrath

Illustrations and Animation by: David McGrath

Original video file: https://www.youtube.com/watch?v=Gp-P8D1i4Ps

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Case Information

rID: 46897
Case created: 22nd Jul 2016
Last edited: 28th Jul 2016
Inclusion in quiz mode: Excluded

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