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: Contribution to journalConference article

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
Pages (from-to)393-400
Number of pages8
JournalInternational Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
Volume18
Issue number6.1
DOIs
Publication statusPublished - Jan 1 2018
Event18th International Multidisciplinary Scientific Geoconference, SGEM 2018 - Albena, Bulgaria
Duration: Jul 2 2018Jul 8 2018

Keywords

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

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geology

Fingerprint Dive into the research topics of 'Phase transition of hexagonal be nanocrystal into cubic superlattice under x-ray radiation'. Together they form a unique fingerprint.

  • Cite this