Open AccessСканирующая туннельная микроскопия поверхности нанопленок иттербия и адсорбированных на ней слоев молекул кислорода
Author(s) -
М.В. Кузьмин,
М.А. Митцев
Publication year - 2020
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2020.08.49548.81-20
Subject(s) - morphology (biology) , adsorption , scanning tunneling microscope , monolayer , layer (electronics) , oxygen , materials science , phase (matter) , molecule , crystallography , nanotechnology , chemical engineering , chemistry , organic chemistry , engineering , genetics , biology
Using scanning tunneling microscopy, surfaces of Yb-Si(111) и O-Yb-Si(111) structures (the Yb nanofilm thickness is 16 monolayers (6.08 nm)) have been studied for the first time, and the information about the morphology and phase composition of these surfaces has been gained. It is established that before the oxygen adsorption, the nanofilms have a high degree of uniformity in thickness, the groth mechanism which is very similar to the layer-by-layer fashion, and the uniform crystallographic structure. Upon the oxygen adsorption a layer composed of islands of oxygen molecules is formed. The height of this layer is 0.112 nm. It is shown that the morphology of the nanofilm within the surface areas which are covered by the monomolecular oxygen film is significantly changed. At the same time the morphology of surface areas which are not occupied by adsorbed layer has still remained intact.