The Difference Electron Nanoscope : Methods and Applications book cover
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The Difference Electron Nanoscope
Methods and Applications




ISBN 9789814774017
Published June 19, 2017 by Jenny Stanford Publishing
254 Pages 33 Color & 85 B/W Illustrations

 
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Book Description

This book deals with the difference electron nanoscope (DEN), whose principles have been invented and realised by the book author. The DEN is based on a smart combination of diffractometric and spectroscopic data and uses a visualisation of three-dimensional difference electron densities (in our case stemming from 3d orbitals) in order to obtain the key quantity involved, the electric field gradient (efg). However, the DEN is no machine, as the title of the book might infer. It is a computer program running on a fast computer system displaying 3D difference electron hyperareas floating in space and the relevant efg as a wire frame model within the unit cell of the sample involved. In this sense, it acts on a sub-nanometer scale (hence the term "nanoscope") and generates images of uncompared symmetrical and physical evidence—and beauty.

For the first time, diffractometry and spectroscopy have been integrated for the common synergetic effects that may contribute to a better understanding of electric and magnetic interactions in a crystal. The experimental derivation of the common quantity, the efg, is not confined to iron-containing samples, as the use of Mössbauer spectroscopy might infer, but can also be determined by nuclear quadrupole resonance that is not confined to special nuclides. Hence, the DEN can be applied to a huge multitude of scientifically interesting specimens since the main method involved, diffractometry in a wide sense, has no general limitations at all. So it is a rather universal method, and the monograph might contribute to a wide distribution of the method in the scientific world. Has anyone seen a real orbital before: a real orbital distribution in a crystal unit cell together with its efg tensor ellipsoid? In this book, one can see it.

Table of Contents

Introduction: What is a DEN?

An Overview on the Methods Involved

The Basic Quantity: The Electric Field Gradient (efg)

The Three Pillars of the DEN Method

The Extension of Pillar 3: The DEN method

Application of the DEN on a Representative Example (Synthetic Fayalite Fe2SiO4)

Summary and Outlook

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Editor(s)

Biography

Werner Lottermoser completed his thesis on neutron diffraction and magnetism of special silicates from Frankfurt University, Germany, and university lecturing qualification on single-crystal Mössbauer spectroscopy from Salzburg University, Austria. Currently, he is working on sub-nanometric imaging, nanomaterials, and materials for industrial applications. Dr. Lottermoser has published more than 65 papers in reputed journals and 150 abstracts, has served as a referee board member of the Journal of Physical Chemistry B in 2006, was awarded the Austrian State Prize for Innovation together with AB-Microelectronics Ltd., Salzburg, in 2015, and holds an honorary doctorate from International Biographical Centre, Cambridge.