Application of direct methods for crystal structure determination using strongly dynamical bulk electron diffraction

W. Sinkler; L. D. Marks

doi:10.1016/S1044-5803(99)00021-2

Application of direct methods for crystal structure determination using strongly dynamical bulk electron diffraction

W. Sinkler^*, L. D. Marks

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

In recent work it was shown that dynamical diffraction effects on direct methods calculations can be taken into account, and that the effect of dynamical scattering is an approximate reconstruction of |1 - Ψ(r)|, where Ψ(r) is the complex electron exit wave. The present work examines these approximations in more detail using the channeling theory and empirical examples. Despite a dependence on thickness and structure in the general case, the approximations are well justified for structures that consist of well-defined atomic columns along the beam direction. An overview of the present minimum relative entropy direct methods algorithm is presented.

Original language	English (US)
Pages (from-to)	283-295
Number of pages	13
Journal	Materials Characterization
Volume	42
Issue number	4
DOIs	https://doi.org/10.1016/S1044-5803(99)00021-2
State	Published - 1999

Funding

The authors would like to acknowledge helpful discussions with E. Landree. Support for this work from the National Science Foundation (DMR 91-20000) through the Science and Technology Center for Superconductivity is gratefully acknowledged.

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/S1044-5803(99)00021-2

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title = "Application of direct methods for crystal structure determination using strongly dynamical bulk electron diffraction",

abstract = "In recent work it was shown that dynamical diffraction effects on direct methods calculations can be taken into account, and that the effect of dynamical scattering is an approximate reconstruction of |1 - Ψ(r)|, where Ψ(r) is the complex electron exit wave. The present work examines these approximations in more detail using the channeling theory and empirical examples. Despite a dependence on thickness and structure in the general case, the approximations are well justified for structures that consist of well-defined atomic columns along the beam direction. An overview of the present minimum relative entropy direct methods algorithm is presented.",

author = "W. Sinkler and Marks, {L. D.}",

note = "Funding Information: The authors would like to acknowledge helpful discussions with E. Landree. Support for this work from the National Science Foundation (DMR 91-20000) through the Science and Technology Center for Superconductivity is gratefully acknowledged.",

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T1 - Application of direct methods for crystal structure determination using strongly dynamical bulk electron diffraction

AU - Sinkler, W.

AU - Marks, L. D.

N1 - Funding Information: The authors would like to acknowledge helpful discussions with E. Landree. Support for this work from the National Science Foundation (DMR 91-20000) through the Science and Technology Center for Superconductivity is gratefully acknowledged.

PY - 1999

Y1 - 1999

N2 - In recent work it was shown that dynamical diffraction effects on direct methods calculations can be taken into account, and that the effect of dynamical scattering is an approximate reconstruction of |1 - Ψ(r)|, where Ψ(r) is the complex electron exit wave. The present work examines these approximations in more detail using the channeling theory and empirical examples. Despite a dependence on thickness and structure in the general case, the approximations are well justified for structures that consist of well-defined atomic columns along the beam direction. An overview of the present minimum relative entropy direct methods algorithm is presented.

AB - In recent work it was shown that dynamical diffraction effects on direct methods calculations can be taken into account, and that the effect of dynamical scattering is an approximate reconstruction of |1 - Ψ(r)|, where Ψ(r) is the complex electron exit wave. The present work examines these approximations in more detail using the channeling theory and empirical examples. Despite a dependence on thickness and structure in the general case, the approximations are well justified for structures that consist of well-defined atomic columns along the beam direction. An overview of the present minimum relative entropy direct methods algorithm is presented.

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EP - 295

JO - Materials Characterization

JF - Materials Characterization

IS - 4

ER -

Application of direct methods for crystal structure determination using strongly dynamical bulk electron diffraction

Abstract

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