NANOCRYSTAL SHAPE ANISOTROPY DETERMINATION USING EXAFS

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Using the set of the nanocrystals (NC) having the rectangular parallelepiped shape and a cubic crystal structure of the zinc-blende type as model system, the possibilities of determining the NC shape anisotropy using the polarized EXAFS technique were demonstrated. It was shown that the effective value of the coordination number of absorbing atoms in an NC with anisotropic shape depends on its size and the orientation of the X-ray radiation polarization vector relative to the NC surface. The effective values of the coordination numbers of the first coordination sphere of atoms in NCs having different size and surface composition were modeled. Taking into account the influence of the experimental error of the EXAFS method the possibilities of the model applicability for analysis of the real systems with NC were analyzed.

作者简介

K. Svit

Rzhanov institute of semiconductor physics, Siberian Branch of the Russian Academy of Sciences

编辑信件的主要联系方式.
Email: svitkirill1989@gmail.com
俄罗斯联邦, 630090, Novosibirsk

K. Zhuravlev

Rzhanov institute of semiconductor physics, Siberian Branch of the Russian Academy of Sciences

Email: svitkirill1989@gmail.com
俄罗斯联邦, 630090, Novosibirsk

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