Structural and Ferroelectric Properties of Ba2NaNb5O15 Thin Films on La-Doped SrTiO3 Substrates
In: Japanese Journal of Applied Physics, Jg. 43 (2004-09-01), S. 6617-6617
Online
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Zugriff:
The c-axis-oriented Ba2NaNb5O15 (BNN) thin films were prepared on La0.05Sr0.95TiO3 substrates by pulsed laser deposition. The c-axis orientation and surface roughness of the BNN thin films depend on oxygen gas pressure (Po2) and substrate temperature (T sub) during the deposition. When Po2 and T sub were fixed at 5.0 mTorr and 700°C, respectively, the BNN thin film exhibited a strong c-axis orientation and a smooth surface. Its remanent polarization (P r) and coercive field (E c) were 2P r=48.5 µC/cm2 and 2E c=290 kV/cm, respectively. The band gap of this strongly c-axis-oriented BNN thin film was about 3.1 eV, which accords with that of the BNN single crystal.
| Titel: |
Structural and Ferroelectric Properties of Ba2NaNb5O15 Thin Films on La-Doped SrTiO3 Substrates
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| Autor/in / Beteiligte Person: | Higuchi, Tohru ; Masuda, Yoichiro ; Hattori, Takeshi ; Kamei, Takayuki ; Sogawa, Minoru ; Ebina, Yoshiki ; Tsukamoto, Takeyo |
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| Zeitschrift: | Japanese Journal of Applied Physics, Jg. 43 (2004-09-01), S. 6617-6617 |
| Veröffentlichung: | IOP Publishing, 2004 |
| Medientyp: | unknown |
| ISSN: | 1347-4065 (print) ; 0021-4922 (print) |
| DOI: | 10.1143/jjap.43.6617 |
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