RT Journal Article
T1 Molecular-scale surface processes during the growth of calcite in the presence ofmanganese
A1 Astilleros García-Monge, José Manuel
A1 Pina Martínez, Carlos Manuel
A1 Fernández Díaz, María Lourdes
A1 Putnis, Andrew
AB Abstract—This paper deals with the growth behaviour of the Mn-Ca-CO3-H2O solid solution-aqueous solution system on calcite {1014} surfaces. This system represents a model example, which allows us to study the effect of a number of controlling factors on the crystallisation: (1) the supersaturation function, (x), and nucleation rate function, J(x), for the Mn-Ca-CO3-H2O system, (2) the relationship of such functions to the molecular scale growth mechanisms operating on growing surfaces, and (3) the surface structure of the calcite {1014} faces. In situ atomic force microscopy (AFM) growth experiments revealed a wide variety of surface phenomena, such as the transition between growth mechanisms, anisotropic changes in the step rates, and the influence of the Mn-bearing newly formed surface on subsequent growth (step stoppage followed by the formation of two-dimensional nuclei and the reproduction of the original calcite {1014} surface microtopography). These phenomena result from the interplay between the controlling parameters and are explained in those terms.
PB Elsevier Science Ltd
SN 0016-7037
YR 2002
FD 2002
LK https://hdl.handle.net/20.500.14352/57125
UL https://hdl.handle.net/20.500.14352/57125
LA eng
DS Docta Complutense
RD 3 oct 2024