Structure of BaTiO3 thin films modified by film–substrate interaction

✍ Scribed by Jaya P. Nair; Natalie Stavitski; Vera Lyahovitskaya; Ilya Zon; Igor Lubomirsky

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 238 KB
• Volume: 5
• Category: Article
• ISSN: 1369-8001
• DOI: 10.1016/s1369-8001(02)00111-7

✦ Synopsis

Substrate-free crystallization of BaTiO 3 thin films was investigated. It was found that the substrate-free crystallized BaTiO 3 films attain a hexagonal structure, whereas the substrate-supported films always crystallize in the tetragonal phase. The substrate-free crystallized hexagonal BaTiO 3 demonstrates detectable pyroelectric effect and does not exhibit phase transitions in the 25-423 K temperature range. Therefore, the substrate-free crystallized BaTiO 3 represents a previously unreported phase of BaTiO 3 .