Abstract
Among the ferroelectric bismuth layered perovskites belonging to Aurivillius family, the MBi4Ti4O15 (MBT15, M = Sr, Ca, Pb) thin films have been fabricated by a chemical solution deposition technique, and their structures and ferroelectric properties were investigated in this work. The SrBi4Ti4O15 (SBT15) film fabricated on IrO2 presented the highest remanent polarization (Pr) among the films in this series. It demonstrated a saturated hysteresis loop at 5 V with Pr of 19 μC/cm2 and coercive field (Ps) of 116 kV/cm. The PbBi4Ti 4O15 (PBT15) thin films were selectively controlled in c-axis and off-c-axis orientation on Pt layer by adjusting the annealing condition. The off-c-axis oriented PbBi4Ti4O15 film demonstrated considerably higher Pr (8.7 μC/cm2) than that of c-axis oriented film (3.7 μC/cm2). Regardless of grain orientation, however, PBT15 films were not fatigued up to 1010 cycles under 9V application. The CaBi4Ti4O15 (CBT15) thin films were also produced on Pt and IrO2 electrode, respectively, by controlling the annealing condition. The CBT15 film on IrO 2 presented higher Pr (∼10.8 μC/cm2) than that of film (∼6.7 μC/cm2) on Pt.
| Original language | English |
|---|---|
| Pages (from-to) | 57-67 |
| Number of pages | 11 |
| Journal | Integrated Ferroelectrics |
| Volume | 65 |
| DOIs | |
| State | Published - 2004 |
Bibliographical note
Funding Information:This work has been supported by the Ministry of Information & Communication of Korea (Support Project of University ITRC Program supervised by KIPA).
Keywords
- CaBiTiO
- Fatigue
- Ferroelectric
- Hysteresis loop
- Layered perovskite
- PbBiTi O
- SrBiTiO
- Thin film