Abstract
Ferroelectric Bi3.25Nd0.75Ti3O 12 (BNT) thin films were grown on (111)Pt/Ti/SiO2/Si substrates by a chemical solution method. The films were composed of large rod-like grains. XRD and Raman spectroscopy measurements showed they were polycrystalline perovskite structure with a good crystallinity. Pt/BNT/Pt capacitors had been fabricated and showed good ferroelectricity. The optical constants (n, k) of BNT thin films in the wavelength ranges of 0.2-1.7 μm and 2.5-11.4 μm were obtained by spectroscopic ellipsometry measurements. The dispersion of the refractive index in the interband transition region followed the single electronic oscillator model. The optical band gap was found to be about 3.61 eV.
| Original language | English |
|---|---|
| Pages (from-to) | 439-442 |
| Number of pages | 4 |
| Journal | Applied Physics A: Materials Science and Processing |
| Volume | 88 |
| Issue number | 2 |
| DOIs | |
| State | Published - Aug 2007 |
| Externally published | Yes |