Abstract
The nanofine spatial dissipative structures (NSDS) were characterized by transmission electron microscopy and electron diffraction. The NSDS obtained by thermogradiently processing an amorphous selenium film by unilateral heating of its lower surface at T = 413 K preliminarily. The results indicate that the NSDS of hexagonal selenium obtained in an amorphous film possess an azimuthal curvature of the lattice and a nonlinear fan-shaped system of flexural contours on their electron microscopic image. The lattice of the above NSDS undergoes elastic – plastic rotational curvature around three mutually perpendicular directions. The lattice rotation angles of hexagonal selenium NSDS reach: around [001], – 25°, around the direction perpendicular [001] and lying in the plane of the amorphous film – 32°, around the direction perpendicular to the first two ones and not lying in the plane of the amorphous film - azimuthal curvature of the lattice, – 35°. Thus, as a result of electron-microscopic and microdiffraction studies, it was found that NSDS of hexagonal selenium with azimuthal curvature of the lattice, causing the curvature of its habitus, are in a nonequilibrium state.
Highlights
It is known that the formation of dissipative structures can be realized by an explosive crystallization of amorphous substances [1]
nanofine spatial dissipative structures (NSDS) of hexagonal selenium with azimuthal curvature of the lattice are formed in an amorphous Se film during thermogradient processing of by heating its lower surface at T = 413 K
Quenching of NSDS of hexagonal selenium by cooling in an air was performed after completion of the thermogradient processing of the amorphous Se film
Summary
It is known that the formation of dissipative structures can be realized by an explosive crystallization of amorphous substances [1] Another way of forming such structures exists – with rotational curvature of the lattice by thermogradient processing of an amorphous film by unilateral heating of its lower surface [2, 3]. Taking into account the above, the formation of NSDS of hexagonal selenium with rotational curvature of the lattice and given dimensions was carried out by the method of thermogradient processing of an amorphous film [2, 3]. NSDS of hexagonal selenium with azimuthal curvature of the lattice are formed in an amorphous Se film during thermogradient processing of by heating its lower surface at T = 413 K.
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