Abstract
The paraelectric cubic to ferroelectric tetragonal phase transformation of thin Pb(Zr, Ti)O3/MgO(001) films was studied in synchrotron x-ray scattering experiments. As the thickness of the film decreases, the transition temperature and the amount of the tetragonal distortion were decreased continuously. The thinnest 250 A thick film was purely composed of the c-type domains in the ferroelectric tetragonal phase. Based on this, we propose a model for the domain structure of the tetragonal PZT/MgO(001) film that is different from the ones suggested in literature. We attribute the suppression of the transition to the substrate effect that prefers the c-type domains near the interface, and reduces the tetragonal distortion to minimize the film-substrate lattice mismatch.
| Original language | English |
|---|---|
| Pages (from-to) | 317-322 |
| Number of pages | 6 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 493 |
| State | Published - 1998 |
| Externally published | Yes |
| Event | Proceedings of the 1997 MRS Fall Symposium - Boston, MA, USA Duration: 30 Nov 1997 → 4 Dec 1997 |
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