Kinetic laws of thermal transformations in nickel nanofilms

Autor:	S. V. Bin, V. E. Surovaya, E. P. Surovoi, L. N. Bugerko
Rok vydání:	2014
Předmět:	Materials science Non-blocking I/O Oxide chemistry.chemical_element Thermodynamics Kinetic energy Nickel chemistry.chemical_compound chemistry Band diagram Charge carrier Physical and Theoretical Chemistry Spectroscopy Volta potential
Zdroj:	Russian Journal of Physical Chemistry A. 88:2172-2178
ISSN:	1531-863X 0036-0244
Popis:	Transformations in nickel nanofilms as a function of thickness (d = 3–60 nm) and temperature of heat treatment (T = 373–873 K) are studied via optical spectroscopy, microscopy, and gravimetry. It is found that, depending on the thickness of nickel films and temperature of heat treatment, the kinetic curves of the degree of transformation are satisfactorily described in terms of the linear, inverse logarithmic, cubic, and logarithmic laws. The contact potential difference for Ni and NiO films and the photovoltage for Ni-NiO systems are measured. An energy band diagram for Ni-NiO systems is constructed. A model of the thermal transformation of Ni films, including the stages of oxygen adsorption, charge carrier redistribution in a Ni-NiO contact field, and the formation of nickel(II) oxide, is proposed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a9e627ced2824c4beb3a6efa66857574 https://doi.org/10.1134/s0036024414120358 Zobrazit plný text záznamu Full text from SpringerLink