Phase transition of hexagonal be nanocrystal into cubic superlattice under x-ray radiation

Mels Boranbayev, Gulmira Yar-Mukhamedova, Farabi Bozheyev, Zhasulan Nakysbekov, Madi Aitzhanov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The structure and phase composition of annealed and irradiated beryllium plates were studied by X-ray analysis. Durable X-ray irradiation leads to phase transition of a normal hexagonal beryllium lattice into a beryllium superlattice. This superlattice is composed of beryllium superatoms that form a face-centered cubic lattice with the lattice parameter of 6.2205 Å and a superatom core that crystalizes into a diamond-type lattice with the lattice parameter of 1.5703Å. It is shown that beryllium has three phase states: normal (hexagonal lattice), a superlattice which composed of nanocrystals beryllium and form F-structure, a nanocrystallites core which is composed of 56 atoms (the magic number) crystallizes in a diamond-type lattice. It was found that by doping with beryllium various alloys after heat treatment, it is relatively easy to form covalent bonds between the atoms of “Be” and alloys. This results in increased strength, hardness, elasticity, and corrosion resistance of the resulting materials (alloys). Good reflectivity of neutrons can be explained by a very high density and magnetic moment of superatom.

Original languageEnglish
Title of host publicationMicro and Nano Technologies, Space Technologies and Planetary Science
PublisherInternational Multidisciplinary Scientific Geoconference
Pages393-400
Number of pages8
Edition6.1
ISBN (Print)9786197408355
DOIs
Publication statusPublished - 2018
Event18th International Multidisciplinary Scientific Geoconference, SGEM 2018 - Albena, Bulgaria
Duration: Jul 2 2018Jul 8 2018

Publication series

NameInternational Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
Number6.1
Volume18
ISSN (Print)1314-2704

Other

Other18th International Multidisciplinary Scientific Geoconference, SGEM 2018
CountryBulgaria
CityAlbena
Period7/2/187/8/18

Keywords

  • Beryllium
  • Nanocrystal
  • Superatom
  • Superlattice
  • X-ray radiation

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geology

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