10.1021/acs.jpcc.8b05963.s001
Carlos Pimentel
Carlos
Pimentel
Enrico Gnecco
Enrico
Gnecco
Carlos M. Pina
Carlos M.
Pina
Epitaxial Growth and Frictional Response of Otavite
and Spherocobaltite on Dolomite (10.4) Surfaces
American Chemical Society
2018
dolomite substrates
Similar values
supersaturated solutions
dolomite crystals
CoCO 3
room temperature
otavite
observations show
force microscopy
Frictional Response
dolomite substrate structure
CdCO 3
lattice parameters
dolomite step edges
friction images
High-resolution friction AFM images
Epitaxial Growth
spherocobaltite overgrow
spherocobaltite overgrowth surfaces
2018-09-06 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Epitaxial_Growth_and_Frictional_Response_of_Otavite_and_Spherocobaltite_on_Dolomite_10_4_Surfaces/7108664
Growth
of otavite (CdCO<sub>3</sub>) and spherocobaltite (CoCO<sub>3</sub>) has been promoted on dolomite (10.4) surfaces at room temperature
by immersing cleaved dolomite crystals in highly supersaturated solutions
with respect to those phases. In situ atomic force microscopy (AFM)
observations show that otavite and spherocobaltite overgrow preferentially
on dolomite step edges and (10.4) terraces by two-dimensional nucleation.
High-resolution friction AFM images reveal the parallelism between
the lattices of the overgrowths and the substrate, demonstrating that
the growth of otavite and spherocobaltite on dolomite (10.4) surfaces
is epitaxial. Similar values of lattice parameters measured on high-resolution
friction images of substrates and overgrowths indicate the accommodation
of the otavite and spherocobaltite (10.4) surface lattices to the
dolomite substrate structure. The frictional response of otavite and
spherocobaltite overgrowth surfaces resulted to be significantly higher
than that of dolomite. These differences in frictional response can
be attributed to the strain generated by the misfits between dolomite
substrates and the overgrowths.