11. Despite being outmoded, strontium titanate is still manufactured and periodically encountered in jewellery. 12. Lafontaine graduated in 1969; his thesis concerned the production of barium titanate crystals. 13. Barium titanate goes through two phase transitions that change the crystal shape and volume. 14. Barium titanate crystals find use in nonlinear optics. 15. Seiko uses lithium titanate batteries in its recent Kinetic ( automatic quartz ) wristwatches. 16. Nickel ( II ) Titanate has been used as a catalyst for toluene oxidation. 17. This titanate is a ferroelectric ceramic material, with a photorefractive effect and piezoelectric properties. 18. Like many oxides, barium titanate is insoluble in water but attacked by sulfuric acid. 19. Strontium titanate 's only major drawback ( if one excludes excess fire ) is fragility. 20. Piezoelectric transducers and actuators are often made of the complex oxide PZT ( lead zirconate titanate ).
