RT journal article
T1 A microstructural study of superconductive  nanocrystalline  diamond
A1 Villar, Maria del Pilar
A1 Alegre Salguero, María de la Paz
A1 Araújo Gay, Daniel
A1 Bustarret, Etienne
A1 Achatz, Philippe
A1 Saminadayar, L
A1 Bauerle, C
A1 Williams, O.A.
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 Nanocrystalline diamond
K1 superconductivity
K1 TEM
K1 HREM
AB A transmission electron microscopy (TEM) study of superconducting nanocrystalline diamond (NCD) continuous layers is reported. The high resolution transmission electron microscopy (HREM) and the diffraction contrast modes of observations are used to reveal the nanograins configuration. Three types of them are observed: first, close to the interface with the Si/SiO2 substrate, 10 to 20 nm-sized diamond16 seeds resulting from the 5nm size diamond powder deposition before growth that show some regrowth during CVD process, second a diamond overgrown layer, quasi-epitaxially by coalesced columnar NCD grains, and finally, up to the free surface, a thin disordered region composed of nanocrystallites smaller than 6 nm. This last layer was not nominally expected and is attributed to a renucleated-like (RND) diamond layer embedding ultra nanocrystalline grains. Diffraction contrast observations confirm this HREM observed behaviour.
SN 1862-6319
YR 2008
FD 2008-01-01T00:00:00Z
LK http://hdl.handle.net/10498/17371
UL http://hdl.handle.net/10498/17371
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 11-nov-2026