Local deformation in hexagonal boron nitride crystal near the B K-shell π-excitation

A. A. Pavlychev, R. Franke, St Bender, J. Hormes

Результат исследований: Научные публикации в периодических изданияхстатья

14 Цитирования (Scopus)

Выдержка

Theoretical and experimental studies of the B K-shell absorption near the π-excitation in hexagonal boron nitride were carried out. The absorption spectrum over the interval 191.5-193.5 eV was analysed in the framework of the quasi-atomic model with respect to its molecular simulation and for the features of its recombination. Our analysis points to the appearance of local deformations in the crystal lattice around a core-excited atom which are mainly created by the breaking of the ground-state symmetry due to out-of-plane displacements of core-excited boron atoms in a basal plane (0.16 Å). The comparison with the experimental B K-shell absorption spectra for the metastable incoherent phase BN and defect-containing BN crystals supports this polaron mechanism. Methods for the description of the x-ray absorption in solids taking into account the related atomic rearrangement are discussed.

Язык оригиналаанглийский
Страницы (с-по)2181-2189
Число страниц9
ЖурналJournal of Physics Condensed Matter
Том10
Номер выпуска9
DOI
СостояниеОпубликовано - 9 мар 1998

Отпечаток

Boron nitride
boron nitrides
Absorption spectra
absorption spectra
Gene Conversion
Atoms
Crystals
Boron
Crystal symmetry
x ray absorption
crystal lattices
Crystal lattices
Ground state
excitation
crystals
atoms
boron
intervals
X rays
Defects

Предметные области Scopus

  • Материаловедение (все)
  • Физика конденсатов

Цитировать

Pavlychev, A. A. ; Franke, R. ; Bender, St ; Hormes, J. / Local deformation in hexagonal boron nitride crystal near the B K-shell π-excitation. В: Journal of Physics Condensed Matter. 1998 ; Том 10, № 9. стр. 2181-2189.
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Local deformation in hexagonal boron nitride crystal near the B K-shell π-excitation. / Pavlychev, A. A.; Franke, R.; Bender, St; Hormes, J.

В: Journal of Physics Condensed Matter, Том 10, № 9, 09.03.1998, стр. 2181-2189.

Результат исследований: Научные публикации в периодических изданияхстатья

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AB - Theoretical and experimental studies of the B K-shell absorption near the π-excitation in hexagonal boron nitride were carried out. The absorption spectrum over the interval 191.5-193.5 eV was analysed in the framework of the quasi-atomic model with respect to its molecular simulation and for the features of its recombination. Our analysis points to the appearance of local deformations in the crystal lattice around a core-excited atom which are mainly created by the breaking of the ground-state symmetry due to out-of-plane displacements of core-excited boron atoms in a basal plane (0.16 Å). The comparison with the experimental B K-shell absorption spectra for the metastable incoherent phase BN and defect-containing BN crystals supports this polaron mechanism. Methods for the description of the x-ray absorption in solids taking into account the related atomic rearrangement are discussed.

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