Surface Crystallography PDF Download
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Author: L. J. Clarke
Publisher: John Wiley & Sons
ISBN:
Category : Science
Languages : en
Pages : 354
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Book Description
Low Energy Electron Diffraction (LEED) is one of the most commonly used techniques for crystal surface characterization at the atomic level. This book is designed to provide all the essential background information necessary to carry out surface crystallography using LEED.
Author: L. J. Clarke
Publisher: John Wiley & Sons
ISBN:
Category : Science
Languages : en
Pages : 354
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Book Description
Low Energy Electron Diffraction (LEED) is one of the most commonly used techniques for crystal surface characterization at the atomic level. This book is designed to provide all the essential background information necessary to carry out surface crystallography using LEED.
Author: E. L. Kern
Publisher:
ISBN:
Category : Electrons
Languages : en
Pages : 0
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Book Description
A low energy electron diffraction apparatus has been designed, developed, and constructed and will be used to study the surface condition and structure of single crystal metals and semicon ductors. The electron gun is adapted from a design by Farnsworth, uses a nickel matrix cath ode, and is capable of producing electrons with energies of 20 to several hundred electron volts with currents from 0.1 to 10 microamperes. The electrons diffracted from a surface can be scanned over a majority of an octant (0-75 degree colatitude 0-90 degree azimuth) using the general approach of Farnsworth, and currents as low as 1 times 10 to the -13th power amperes can be measured at the collector. An angle pro grammer has been developed to precisely program the angles to be swept, and the angular motion is transferred through a glass chamber wall by a pair of magnetic couplers. The apparatus and some of its characteristics are described. (Author).
Author: Michel A. VanHove
Publisher: Springer Science & Business Media
ISBN: 3642827217
Category : Science
Languages : en
Pages : 617
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Book Description
Surface crystallography plays the same fundamental role in surface science which bulk crystallography has played so successfully in solid-state physics and chemistry. The atomic-scale structure is one of the most important aspects in the understanding of the behavior of surfaces in such widely diverse fields as heterogeneous catalysis, microelectronics, adhesion, lubrication, cor rosion, coatings, and solid-solid and solid-liquid interfaces. Low-Energy Electron Diffraction or LEED has become the prime tech nique used to determine atomic locations at surfaces. On one hand, LEED has yielded the most numerous and complete structural results to date (almost 200 structures), while on the other, LEED has been regarded as the "technique to beat" by a variety of other surface crystallographic methods, such as photoemission, SEXAFS, ion scattering and atomic diffraction. Although these other approaches have had impressive successes, LEED has remained the most productive technique and has shown the most versatility of application: from adsorbed rare gases, to reconstructed surfaces of sem iconductors and metals, to molecules adsorbed on metals. However, these statements should not be viewed as excessively dogmatic since all surface sensitive techniques retain untapped potentials that will undoubtedly be explored and exploited. Moreover, surface science remains a multi-technique endeavor. In particular, LEED never has been and never will be self sufficient. LEED has evolved considerably and, in fact, has reached a watershed.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 197
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Book Description
The surface structures of NaCl(100), LiF(100) and alpha-MgCl2(0001) adsorbed on various metal single crystals have been determined by low energy electron diffraction (LEED). Thin films of these salts were grown on metal substrates by exposing the heated metal surface to a molecular flux of salt emitted from a Knudsen cell. This method of investigating thin films of insulators (ionic salts) on a conducting substrate (metal) circumvents surface charging problems that plagued bulk studies, thereby allowing the use of electron-based techniques to characterize the surface.
Author: Kenneth Robert Lawless
Publisher:
ISBN:
Category :
Languages : en
Pages : 32
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Book Description
Author: M.A. van Hove
Publisher: Springer
ISBN: 9783642671975
Category : Science
Languages : en
Pages : 0
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Book Description
Surface science has experienced an impressive growth in the last two decades. The attention has focussed mainly on single-crystal surfaces with, on the atomic scale, relatively simple and well-defined structures (for example, clean surfaces and such surfaces with limited amounts of additional foreign atoms and molecules). One of the most fundamental types of information needed about solid surfaces concerns the relative atomic positions. The geometrical arrangement of surface atoms influences most physical and chemical properties of surfaces, the list of which is long and includes a number of important technological applications: electronic surface states, contact potentials, work functions, oxidation, heterogeneous catalysis, friction, adhesion, crys tal growth etc. Surface crystallography - the determination of relative atomic positions at surfaces - has found a successful tool in Low-Energy Electron Diffraction (LEED): this technique has now determined the atomic positions for nearly a hundred surfaces, whether in the clean state or with additional foreign atoms or molecules. The main aim of this book is to publish a set of computer pro grams that has been specifically designed for and extensively used in surface crystallography by LEED. These programs are based on the dynamical (i.e.
Author: J. B. Pendry
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 424
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Book Description
Author: Larry Lee Kesmodel
Publisher:
ISBN:
Category : Crystals
Languages : en
Pages : 280
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Book Description
Author: P.K. Larsen
Publisher: Springer Science & Business Media
ISBN: 146845580X
Category : Science
Languages : en
Pages : 526
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Book Description
This volume contains the papers presented at the NATO Advanced Research Workshop in "Reflection High Energy Electron Diffraction and Reflection Electron Imaging of Surfaces" held at the Koningshof conference center, Veldhoven, the Netherlands, June 15-19, 1987. The main topics of the workshop, Reflection High Energy Electron Diffraction (RHEED) and Reflection Electron Microscopy (REM), have a common basis in the diffraction processes which high energy electrons undergo when they interact with solid surfaces at grazing angles. However, while REM is a new technique developed on the basis of recent advances in transmission electron microscopy, RHEED is an old method in surface crystallography going back to the discovery of electron diffraction in 1927 by Davisson and Germer. Until the development of ultra high vacuum techniques in the 1960's made instruments using slow electrons more accessable, RHEED was the dominating electron diffraction technique. Since then and until recently the method of Low Energy Electron Diffraction (LEED) largely surpassed RHEED in popularity in surface studies. The two methods are closely related of course, each with its own specific advantages. The grazing angle geometry of RHEED has now become a very useful feature because this makes it ideally suited for combination with the thin growth technique of Molecular Beam Epitaxy (MBE). This combination allows in-situ studies of freshly grown and even growing surfaces, opening up new areas of research of both fundamental and technological importance.
Author: D. P. Woodruff
Publisher: Cambridge University Press
ISBN: 9780521424981
Category : Science
Languages : en
Pages : 612
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Book Description
Revised and expanded second edition of the standard work on new techniques for studying solid surfaces.
