Abstract
a-/b-axis-oriented epitaxial Bi4Ti3O12 and neodymiura-substituted Bi4Ti3O12 films with a different a-domain fraction, V(100)/[V(100)+V( 010)], were grown by metalorganic chemical vapor deposition above the phase transition temperature. It was demonstrated that the saturation polarization observed for the a-/b-axis-oriented film is proportional to the a-domain fraction estimated by x-ray diffraction. The liner relationship passing through the origin revealed that the 90° domain switching by an external electric field hardly occurred. The extrapolation gave spontaneous polarization of 58 μC/cm for a pure a-axis-oriented (Bi3.5Nd 0.5)Ti3O12 film. The domain fraction was investigated as a function of thermal strain originated from a difference in thermal expansion coefficient between the film and substrates. The domain fraction of the films changed with the thermal strain along the in-plane [010] in tetragonal a-axis-oriented films as well as epitaxially grown tetragonal Pb(Zr,Ti)O3 films.
| Original language | English |
|---|---|
| Pages (from-to) | 109-114 |
| Number of pages | 6 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 784 |
| DOIs | |
| Publication status | Published - 2003 |
| Externally published | Yes |
| Event | Ferroelectric Thin Films XII - Boston, MA, United States Duration: Dec 1 2003 → Dec 4 2003 |
All Science Journal Classification (ASJC) codes
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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