Open AccessИнтеркалирование натрием графеновых пленок на Re(10(1)0)
Author(s) -
Е.В. Рутьков,
Е.Ю. Афанасьева,
Н.П. Лавровская,
Н.Р. Галль
Publication year - 2018
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2018.05.45807.301
Subject(s) - graphite , graphene , intercalation (chemistry) , materials science , diffusion , phase (matter) , layer (electronics) , sodium , rhenium , nanotechnology , inorganic chemistry , composite material , thermodynamics , chemistry , metallurgy , physics , organic chemistry
It is shown that during low-temperature (300–500 K) intercalation of sodium atoms into thin multilayer graphene and graphite films on rhenium the first graphene layer plays the role of a trap to which atoms coming on the surface diffuse through a graphite film. The intercalation phase of the interlayer space in the graphite bulk is actively filled at a sodium atoms concentration under the first graphene layer close to the maximum possible (2 ± 0.5) × 10^14 cm^–2. This phase capacity is proportional to the graphite film thickness that can be varied in this work from one graphene layer to ~50 atomic layers. The diffusion energy E _ d of Na atoms through the graphite film was estimated to be E _ d ≈ 1.4 eV.