PLD prepared bioactive BaTiO3 films on TiNb implants
| Autor: | Elena Buixaderas, Tomáš Kocourek, Jan Drahokoupil, M. Tyunina, Jan Remsa, V. Studnička, Miroslav Jelinek, Jan Petzelt, Zdeněk Tolde, Přemysl Vaněk |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Annealing (metallurgy) Bioengineering Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Ferroelectricity 0104 chemical sciences Pulsed laser deposition Amorphous solid Biomaterials symbols.namesake Chemical engineering Mechanics of Materials Rutile symbols Crystallite Thin film 0210 nano-technology Raman spectroscopy |
| Zdroj: | Materials Science and Engineering: C. 70:334-339 |
| ISSN: | 0928-4931 |
| DOI: | 10.1016/j.msec.2016.08.072 |
| Popis: | BaTiO3 (BTO) layers were deposited by pulsed laser deposition (PLD) on TiNb, Pt/TiNb, Si (100), and fused silica substrates using various deposition conditions. Polycrystalline BTO with sizes of crystallites in the range from 90nm to 160nm was obtained at elevated substrate temperatures of (600°C-700°C). With increasing deposition temperature above 700°C the formation of unwanted rutile phase prevented the growth of perovskite ferroelectric BTO. Concurrently, with decreasing substrate temperature below 500°C, amorphous films were formed. Post-deposition annealing of the amorphous deposits allowed obtaining perovskite BTO. Using a very thin Pt interlayer between the BTO films and TiNb substrate enabled high-temperature growth of preferentially oriented BTO. Raman spectroscopy and electrical characterization indicated polar ferroelectric behaviour of the BTO films. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect