The difference electron nanoscope : methods and applications / Werner Lottermoser

Von:

Lottermoser, Werner, 1909-1997 [VerfasserIn]

Resource type: Ressourcentyp: Buch (Online)Buch (Online)Sprache: Englisch Verlag: Roca Raton, FL : CRC Press, Taylor & Francis Group, 2017Verlag: [Singapore] : Pan Stanford Publishing, 2017Beschreibung: 1 Online-RessourceISBN:

9781315196640
1351767674
9781351767675

Schlagwörter:

Andere physische Formen: 1315196646 | 9814774014 | 9789814774017 | Erscheint auch als: The difference electron nanoscope. Druck-Ausgabe Singapore : Pan Stanford Publishing, 2017. x, 252 SeitenLOC-Klassifikation:

QH212.E4

Online-Ressourcen:

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Zusammenfassung: "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."--Provided by publisherZusammenfassung: 3.1.1.7 Later contributions to...3.1.2 Single Crystal Mossbauer Spectroscopy; 3.1.2.1 Preparation of the single crystal sample; 3.1.2.2 Orientation of the single crystal individuals; 3.1.2.3 Manufacturing of the oriented single crystal samples; 3.1.3 Nuclear Magnetic Resonance and Nuclear Quadrupole Resonance; 3.1.3.1 Basics; 3.2 The Full Quantitative Method to Calculate an efg from First Principles; 3.2.1 Fundamentals of Theoretical Approaches: Density Functional Theory; 3.2.1.1 Historical background; 3.2.1.2 The Nobel Prize winner Walter Kohn; 3.2.1.3 The Nobel Prize winner John A. PopleZusammenfassung: 3.3.2.2 The intensity distribution of the reflections3.3.2.3 Generalization of the above example; 3.3.3 Synchrotron Diffraction; 3.3.4 Neutron Diffraction; 3.3.4.1 The diffracted intensities; 3.3.4.2 Corrections of observables; 3.3.4.3 Sample specific corrections; 3.3.4.4 The neutron diffractometers; 3.3.4.5 Preparation of the sample; 3.3.4.6 Experiments at the D15 device for integrated neutrons; 3.3.4.7 Experiments at the D3 for spin-polarized neutrons; 4: The Extension of Pillar 3: The DEN Method; 4.1 The Principal Idea; 4.2 The Hardware Components; 4.3 Description of the SoftwareZusammenfassung: 3.3.2.2 The intensity distribution of the reflections3.3.2.3 Generalization of the above example; 3.3.3 Synchrotron Diffraction; 3.3.4 Neutron Diffraction; 3.3.4.1 The diffracted intensities; 3.3.4.2 Corrections of observables; 3.3.4.3 Sample specific corrections; 3.3.4.4 The neutron diffractometers; 3.3.4.5 Preparation of the sample; 3.3.4.6 Experiments at the D15 device for integrated neutrons; 3.3.4.7 Experiments at the D3 for spin-polarized neutrons; 4: The Extension of Pillar 3: The DEN Method; 4.1 The Principal Idea; 4.2 The Hardware Components; 4.3 Description of the SoftwareZusammenfassung: Cover; Half Title; Title Page; Copyright Page; Table of Contents; Preface; Introduction: What Is a DEN; 1: An Overview on the Methods Involved; 2: The Basic Quantity: The Electric Field Gradient; 3: The Three Pillars of the DEN Method; 3.1 The Experimental Methods to Derive a "Measured" efg; 3.1.1 Fundamentals of Mossbauer Spectroscopy; 3.1.1.1 Features and function of a Mossbauer spectrometer; 3.1.1.2 Evaluation of spectra; 3.1.1.3 Calibration and folding; 3.1.1.4 Sample preparation; 3.1.1.5 Historical background; 3.1.1.6 The Nobel Prize winner Rudolf L. MossbauerZusammenfassung: "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."--Provided by publisherPPN: PPN: 897955552Package identifier: Produktsigel: ZDB-4-NLEBK

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