ChemInform Abstract: Properties of Dielectric BaTiO3 Thin Films Prepared by Spray Pyrolysis.

✍ Scribed by N. GOLEGO; S. A. STUDENIKIN; M. COCIVERA

• Publisher: John Wiley and Sons
• Year: 2010
• Weight: 32 KB
• Volume: 29
• Category: Article
• ISSN: 0931-7597
• DOI: 10.1002/chin.199839290

✦ Synopsis

Properties of Dielectric BaTiO 3 Thin Films Prepared by Spray Pyrolysis. -Both smooth and highly porous films are deposited depending on deposition temp. and rate. As-deposited films contain an unidentified, low-symmetry Ba titanate modification. Annealing at 500-900 • C converts the films to the cubic phase, while annealing at 1000 • C produces the tetragonal phase and an increase in the grain size. The films are highly dielectric with DC resistivity in the 10 10 -10 12 Ω•cm range. The effective dielectric constant (20-25 at 10 kHz) is possibly determined by amorphous grain-boundary region with high density of traps. -(GOLEGO, N.;