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- Instituto Superior TécnicoPT39 papers
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- Institute of Astrophysics and Space SciencesPT23 papers
- European Southern ObservatoryCL13 papers
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7 papers · 1 filter
Magnetic properties of Co-doped TiO2 anatase nanopowders
L. C. J. Pereira, M. R. Nunes, O. C. Monteiro +1
This letter reports on the magnetic properties of Ti1-xCoxO2 anatase phase nanopowders with different Co contents. It is shown that oxygen vacancies play a fundamental role in prom…
CVD of CrO2: towards a lower temperature deposition process
P. M. Sousa, S. A. Dias, A. J. Silvestre +5
We report on the synthesis of highly oriented a-axis CrO2 films onto (0001) sapphire by atmospheric pressure CVD from CrO3 precursor, at growth temperatures down to 330 degree Cels…
KrF pulsed laser deposition of chromium oxide thin films from Cr8O21 targets
N. Popovici, M. L. Parames, R. C. da Silva +4
Chromium oxides, CrxOy, are of great interest due to the wide variety of their technological applications. Among them, CrO2 has been extensively investigated in recent years becaus…
Morphological and Structural Characterization of Cro2/Cr2o3 Films Grown by Laser-CVD
P. M. Sousa, A. J. Silvestre, N. Popovici1 +1
This work reports on the synthesis of chromium (III, IV) oxides films by KrF laser-assisted CVD. Films were deposited onto sapphire substrates at room temperature by photodissociat…
TiN Films Deposited by Laser CVD: A Growth Kinetics Study
A. J. Silvestre, O. Conde
Results on the chemical composition, structure and growth kinetics of titanium nitride (TiN) films deposited on mild steel substrates by pyrolytic laser-induced chemical vapour dep…
Influence of Carbon Content on the Crystallographic Structure of Boron Carbide Films
O. Conde, A. J. Silvestre, J. C. Oliveira
Boron carbide thin films were synthesised by laser-assisted chemical vapour deposition (LCVD), using a CO2 laser beam and boron trichloride and methane as precursors. Boron and car…