Abstract
Homogeneous KTN (Potassium Tantalate Niobate) solutions were prepared using potassium acetate and metal alkoxides in 2-methoxyethanol by controlled hydrolysis with 1:2 (KTN/H2O) molar ratio. We report on the synthesis of sol-gel KTN for both the fabrication of homogeneous, dense and stoichiometrically correct ceramic discs by hot isostatic pressing and the deposition of spin-on as well as sputtered thin films. The spin-on KTN films on Pt/Si or r-sapphire were polycrystalline and stoichiometric, however, sputtered films on sapphire were fully (100) oriented and polycrystalline on Pt/SiO2/Si substrates with some potassium deficiency. The refractive indices of sputtered, dense KTN films on sapphire were between 2.00 and 2.05.
Original language | English (US) |
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Pages (from-to) | 75-84 |
Number of pages | 10 |
Journal | Ferroelectrics, Letters Section |
Volume | 28 |
Issue number | 3-4 |
DOIs | |
State | Published - 2001 |
Externally published | Yes |
Keywords
- KTN thin films
- Magnetron sputtering
- Sol-gel
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics