Abstract
This work highlights, for the first time, the coating of ferroelectric nanoparticles with a chemical fluid deposition process in supercritical fluids. BaTiO3 nanoparticles of about 50 nm are coated with a shell of a few nanometers of amorphous alumina and can be recovered as a dry powder for processing. The sintering of these core-shell nanoparticles gives access to a ceramic material with very interesting ferroelectric properties, in particular, dielectric losses below 1%.
Publication types
-
Research Support, Non-U.S. Gov't
MeSH terms
-
Adsorption
-
Aluminum Oxide / analysis
-
Aluminum Oxide / chemistry*
-
Barium Compounds / analysis
-
Barium Compounds / chemistry*
-
Ceramics / analysis
-
Ceramics / chemistry
-
Chromatography, Supercritical Fluid / methods*
-
Crystallization / methods
-
Ferric Compounds / analysis
-
Ferric Compounds / chemistry*
-
Magnetics*
-
Materials Testing
-
Nanotechnology / methods*
-
Nanotubes / analysis
-
Nanotubes / chemistry*
-
Nanotubes / ultrastructure*
-
Particle Size
-
Titanium / analysis
-
Titanium / chemistry*
Substances
-
Barium Compounds
-
Ferric Compounds
-
barium titanate(IV)
-
ferrite
-
Titanium
-
Aluminum Oxide