Non-crystalline pyroelectric BaTiO3 thin films

✍ Scribed by V Lyahovitskaya; I Zon; Y Feldman; S Cohen; I Lubomirsky

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 84 KB
• Volume: 109
• Category: Article
• ISSN: 0921-5107
• DOI: 10.1016/j.mseb.2003.10.038

✦ Synopsis

Quasi-amorphous BaTiO 3 thin films demonstrate pyroelectricity and piezoelectricity of a magnitude of 5-15% of bulk BaTiO 3 , despite the fact that X-ray and electron diffraction data do not reveal detectable crystallites in this material. Therefore, the pyroelectric and piezoelectric effects must be attributed to a local dipole ordering, which is induced by the high compressive stress in the films. The non-crystalline films were prepared by passing amorphous BaTiO 3 layers deposited on a Si(1 0 0) substrate through a temperature gradient.