Wikipedia
Barium titanate
Barium titanate is the inorganic compound with the chemical formula BaTiO. Barium titanate is a white powder and transparent as larger crystals. This titanate is a ferroelectric ceramic material, with a photorefractive effect and piezoelectric properties.
Usage examples of "barium titanate".
Hiroto's breakthrough came with a form of barium titanate crystals his team had created in the lab.
He had envisioned a computer made up not only of light wafer chips but 'gates' of barium titanate prisms which would capture and direct not merely data at the speed of light but entire images.