Abstract
The ferroelectric behavior of (Bi,La)4Ti3O 12 (BLT) films deposited on Si(100) substrates with the use of ZrO2 buffer layers was demonstrated. ZrO2 films were prepared using the sol-gel method. Then, they were subjected to dry O 2 annealing in a rapid-thermal-annealing furnace. BLT films were deposited on these structures through the sol-gel method, and they were characterized through X-ray diffraction analysis and atomic-force microscopy. It was found from capacitance-voltage measurements that the BLT films had a hysteresis loop and that the memory window was about 2 V for the voltage sweep of ± 5 V. Based on these results, it can be concluded that the use of the BLT/ZrO2/Si(100) structure in the fabrication of MFISFETs (metal-ferroelectric-insulator-semiconductor field-effect transistors) holds great promise.
| Original language | English |
|---|---|
| Pages (from-to) | 123-130 |
| Number of pages | 8 |
| Journal | Integrated Ferroelectrics |
| Volume | 75 |
| DOIs | |
| State | Published - 2005 |
| Event | Seventeenth International Symposium on Integrated Ferroelectrics, ISIF-17 - Shanghai, China Duration: 17 Apr 2005 → 20 Apr 2005 |
Keywords
- BLT
- FeRAM
- MFIS structure
- Memory window
- ZrO