Structure Analysis by Electron Diffraction

Structure Analysis by Electron Diffraction focuses on the theory and practice of studying the atomic structure of crystalline substances through electron diffraction.

The publication first offers information on diffraction methods in structure analysis and the geometrical theory of electron diffraction patterns. Discussions focus on the fundamental concepts of the theory of scattering and structure analysis of crystals, structure analysis by electron diffraction, formation of spot electron diffraction patterns, electron diffraction texture patterns, and polycrystalline electron diffraction patterns. The text then ponders on intensities of reflections, including atomic scattering, temperature factor, structure amplitude, experimental measurements of intensity, and review of equations for intensities of reflections in electron diffraction patterns.

The manuscript examines the Fourier methods in electron diffraction and experimental electron diffraction structure investigations. Topics include the determination of the structure of the hydrated chlorides of transition metals; structures of carbides and nitrides of certain metals and semi-conducting alloys; electron diffraction investigation of clay minerals; and possibilities inherent in structure analysis by electron diffraction.

The book is a helpful source of data for readers interested in structure analysis by electron diffraction.

Translator's Foreword

Preface to the English Edition

Preface

Chapter I. Diffraction Methods in Structure Analysis

1. Electron, X-ray and Neutron Diffraction

2. Uses of Electron Diffraction. Structure Analysis by Electron Diffraction

3. Fundamental Concepts of the Theory of Scattering and of the Structure Analysis of Crystals

References

Chapter II. The Geometrical Theory of Electron Diffraction Patterns

1. The Basic Formula. Types of Electron Diffraction Patterns

2. Formation of Spot Electron Diffraction Patterns

3. The Geometry of Electron Diffraction Spot Patterns and the Determination of the Unit Cell

4. Electron Diffraction Texture Patterns

5. Interpretation of Electron Diffraction Patterns from Textures

6. Polycrystalline Electron Diffraction Patterns

References

Chapter III. Intensities of Reflections

1. General Concepts

2. Atomic Scattering

3. Scattering of Electrons by Ions

4. Temperature Factor

5. Structure Amplitude

6. Intensity of Reflections from an Ideal Single Crystal

7. Intensity of Reflections from a Mosaic Single Crystal Film

8. Intensity of Reflections from Single Crystal Films Consisting of Large Blocks

9. Intensity of Reflections from Textured Films

10. Intensity of Reflections from Polycrystalline Films

11. Review of Equations for Intensities of Reflections in Electron Diffraction Patterns

12. Experimental Measurements of Intensity

References

Chapter IV. Fourier Methods in Electron Diffraction

1. Specific Features of Structure Analysis by Electron Diffraction

2. Some Methods of Structure Analysis

3. Fourier Series of the Potential

4. Ø2-Series (Patterson-Series)

5. Integral Characteristics of the Potential Distribution in Atoms

6. The Mean Inner Potential of Crystals

7. Normalization of the Fourier Series for the Potential

8. Potential at the Center of an Atom

9. Accuracy of the Determination of Potential Values

10. Accuracy of the Determination of Atomic Coordinates

11. Some Artificial Methods in the Use of Fourier Series

References

Chapter V. Experimental Electron Diffraction Structure Investigations

1. Experimental Technique

2. Determination of the Structure of BaCl2,.H2O

3. Determination of the Structure of the Hydrated Chlorides of Transition Metals

4. Investigation of the Structure of Certain Basic Salts

5. Electron Diffraction Studies of Close-packed Structures. The Structures of Carbides and Nitrides of Certain Metals and Semiconducting Alloys

6. Electron Diffraction Investigation of Clay Minerals

7. Location of Hydrogen Atoms by Electron Diffraction

8. Possibilities Inherent in Structure Analysis by Electron Diffraction

References

Appendixes

I. Geometrical Relationships in Direct and Reciprocal Lattices

II. Fourier Integral in Spherical Coordinates

III. Tables of Atom Factors, fe1, for Electron Scattering

IV. New Data on Atom Factors for Electron Scattering

Author Index

Subject Index