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Vacancy Formation Energies In Metals By Positron Annihilation
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Book Synopsis Positron Annihilation in Chemistry by : Ole E. Mogensen
Download or read book Positron Annihilation in Chemistry written by Ole E. Mogensen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only critical discussion available on the chemistry of the two "strange" light particles, the positron and positronium, with much space devoted to the excess electron. Positron annihilation allows the investigation of many unusual phenomena in the reaction kinetics of the positron, positronium, and excess electron, and in radiation chemistry and physics, while also providing important information on defects in solids.
Book Synopsis Vacancies and Interstitials in Metals by : Alfred Seeger
Download or read book Vacancies and Interstitials in Metals written by Alfred Seeger and published by North-Holland. This book was released on 1970 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 1684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1983 with total page 1144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Defects in Solids by : A.V. Chadwick
Download or read book Defects in Solids written by A.V. Chadwick and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical Characterization of Aluminum, Steel, and Superalloys by : D. Scott MacKenzie
Download or read book Analytical Characterization of Aluminum, Steel, and Superalloys written by D. Scott MacKenzie and published by CRC Press. This book was released on 2005-10-10 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: This one-of-a-kind reference examines conventional and advanced methodologies for the quantitative evaluation of properties and characterization of microstructures in metals. It presents methods for uncovering valuable information including precipitate mechanisms, kinetics, stability, crystallographic orientation, the effects of thermo-mechanical p
Book Synopsis Crystallography and Crystal Defects by : Anthony Kelly
Download or read book Crystallography and Crystal Defects written by Anthony Kelly and published by John Wiley & Sons. This book was released on 2012-02-13 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensively revised and updated, this new edition of a classic text presents a unified approach to crystallography and to the defects found within crystals. The book combines the classical and exact description of symmetry of a perfect crystal with the possible geometries of the major defects-dislocations, stacking faults, point defects, twins, interfaces and the effects of martensitic transformations. A number of important concepts and exciting new topics have been introduced in this second edition, including piezoelectricity, liquid crystals, nanocrystalline concepts, incommensurate materials and the structure of foamed and amorphous solids. The coverage of quasicrystalline materials has been extended, and the data tables, appendices and references have been fully updated. Reinforcing its unrivalled position as the core text for teaching crystallography and crystal defects, each chapter includes problem sets with brief numerical solutions at the end of the book. Detailed worked solutions, supplementary lecture material and computer programs for crystallographic calculations are provided online (http://booksupport.wiley.com).
Author :Reinhard Krause-Rehberg Publisher :Springer Science & Business Media ISBN 13 :9783540643715 Total Pages :408 pages Book Rating :4.6/5 (437 download)
Book Synopsis Positron Annihilation in Semiconductors by : Reinhard Krause-Rehberg
Download or read book Positron Annihilation in Semiconductors written by Reinhard Krause-Rehberg and published by Springer Science & Business Media. This book was released on 1999 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive book reports on recent investigations of lattice imperfections in semiconductors by means of positron annihilation. It reviews positron techniques, and describes the application of these techniques to various kinds of defects, such as vacancies, impurity vacancy complexes and dislocations.
Book Synopsis Structural and magnetic disorder in crystalline materials by : Davide Gambino
Download or read book Structural and magnetic disorder in crystalline materials written by Davide Gambino and published by Linköping University Electronic Press. This book was released on 2019-05-14 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: Disorder in crystalline materials can take different forms and originate from different sources. In particular, temperature introduces disorder in any kind of material. This can be observed as the appearance of vacant lattice sites in an otherwise perfect crystal, or as a random distribution of different elements on the same lattice in an alloy; at the same time, if the material is magnetic, temperature induces disorder also on the magnetic degrees of freedom. In this thesis, different levels of disorder associated to structure and magnetism are investigated by means of density functional theory and thermodynamic models. I start with diffusion of Ti vacancies in TiN, which is studied by means of nonequilibrium ab initio molecular dynamics using the color diffusion algorithm at different temperatures. The result is an Arrhenius behavior of Ti vacancy jump rates. A method to perform structural relaxations in magnetic materials in their hightemperature paramagnetic phase is then developed based on the disordered local moments approach in order to study vacancies, interstitial atoms, and combinations of defects in paramagnetic bcc Fe and B1 CrN, as well as the mixing enthalpy of bcc Fe1?xCrx random alloys. A correction to the energetics of every system due to the relaxation in the disordered magnetic state is observed in all cases. Not related to temperature and disorder, but very important for an accurate description of magnetic materials, is the choice of the exchange and correlation functional to be employed in the first principles calculations. We have investigated the performance of a recently developed meta-GGA functional, the strongly constrained and appropriately normed (SCAN) functional, in comparison with the more commonly used LDA and PBE on the ferromagnetic elemental solids bcc Fe, fcc Ni, and hcp Co, and SCAN it is found to give negligible improvements, if not a worsening, in the description of these materials. Finally, the coupling between vibrational and magnetic degrees of freedom is discussed by reviewing the literature and proposing an investigation of the influence of vibrations on longitudinal spin fluctuations. These excitations are here studied by means of thermodynamic models based on Landau expansion of the energy in even powers of the magnitude of the local magnetic moments. We find that vibrational and magnetic disorder alter the energy landscapes as a function of moment size also in bcc Fe, which is often considered a Heisenberg system, inducing a more itinerant electron behavior.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 1146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanical Properties of Metals by : C. W. Lung
Download or read book Mechanical Properties of Metals written by C. W. Lung and published by World Scientific. This book was released on 1999 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is intended to describe the basic and newly developed elements of the physics of solids and materials science on mechanical properties of metals with as much continuity as is possible. Particular emphasis has been placed in atomistic and fractal approaches and continuum theory of dislocations is also introduced. Since the book is meant for the two main topics of progress in recent years, some interesting and important topics which have not been discussed or introduced are given in detail.For a long time, pair potentials were used very expensively in simulation studies. They can reproduce usefully total energies for many systems. But when one turns to elastic properties, fracture of surfaces, and the vacancy formation energy, deficiencies and limitations begin to emerge. These limitations of the simple pair potential approximation have been addressed by the development of empirical many-body potentials which is the major theme of our book.Over a decade or more, diverse scientists have recognized that many of the structures common in their experiments have a special kind of geometrical complexity. The key to this progress is the recognition that many random structures obey a symmetry that objects look the same on many different scales of observation. The concept of fractals was introduced by Mandelbrot and applied to fractures by himself and collaborators. Their work pointed to a correlation between toughness and the fractal dimension. Our interest is the fractal aspects of fractured surfaces. We will discuss more in our book.The strain field of a dislocation has a long range part and this part can be discussed rigorously from elasticity theory. Recent progress in elastic strain fields and dislocation mobility were made by Indenbom and Lothe. The elementary essentials will be introduced in our book.
Download or read book Canadian Journal of Physics written by and published by . This book was released on 1983 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Positrons in Solids by : P. Hautojärvi
Download or read book Positrons in Solids written by P. Hautojärvi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: In condensed matter initially fast positrons annihilate after having reached equi librium with the surroundings. The interaction of positrons with matter is governed by the laws of ordinary quantum mechanics. Field theory and antiparticle properties enter only in the annihilation process leading to the emergence of energetic photons. The monitoring of annihilation radiation by nuclear spectroscopic methods provides valuable information on the electron-positron system which can directly be related to the electronic structure of the medium. Since the positron is a positive electron its behavior in matter is especially interesting to solid-state and atomic physi cists. The small mass quarantees that the positron is really a quantum mechanical particle and completely different from any other particles and atoms. Positron physics started about 25 years ago but discoveries of new features in its interac tion with matter have maintained continuous interest and increasing activity in the field. Nowadays it is becoming part of the "stock-in-trade" of experimental physics.
Book Synopsis Physical Metallurgy by : David E. Laughlin
Download or read book Physical Metallurgy written by David E. Laughlin and published by Newnes. This book was released on 2014-07-24 with total page 2963 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fifth edition of the highly regarded family of titles that first published in 1965 is now a three-volume set and over 3,000 pages. All chapters have been revised and expanded, either by the fourth edition authors alone or jointly with new co-authors. Chapters have been added on the physical metallurgy of light alloys, the physical metallurgy of titanium alloys, atom probe field ion microscopy, computational metallurgy, and orientational imaging microscopy. The books incorporate the latest experimental research results and theoretical insights. Several thousand citations to the research and review literature are included. - Exhaustively synthesizes the pertinent, contemporary developments within physical metallurgy so scientists have authoritative information at their fingertips - Replaces existing articles and monographs with a single, complete solution - Enables metallurgists to predict changes and create novel alloys and processes
Book Synopsis Experimental Techniques In Physics And Materials Sciences: Principles And Methodologies by : R Srinivasan
Download or read book Experimental Techniques In Physics And Materials Sciences: Principles And Methodologies written by R Srinivasan and published by World Scientific. This book was released on 2023-10-12 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: There have been new developments in experimental techniques for preparing and characterizing materials and for measuring their properties. These techniques are not being taught to students at the master's or even doctoral levels because there is no single book which deals with all these techniques at a basic level. The present book is an attempt to overcome this problem.The book is divided into five sections: (1) Techniques for preparing materials in the bulk, nanoscale and thin film forms; (2) Techniques for characterizing materials like X ray and neutron powder diffraction, ESCA, Ellipsometry for thin films, Ultrasonic techniques, Electron microscopy, Surface probe techniques and Positron annihilation for defect studies; (3) Techniques for measurements, at research level, of the elastic, thermal, electrical, dielectric and magnetic properties; (4) Spectroscopic techniques such as NMR-EPR spectroscopy, IR, Visible-UV spectroscopy and Mossbauer spectroscopy and (5) Phase transitions. In each of the above topics the basic principles are clearly laid out, the experimental set-ups are described, and typical examples are cited to illustrate the physics revealed by these techniques.The book can be used for a two-semester course on experimental techniques in physics and materials science at the master's and pre-doctoral degree levels for students.
Book Synopsis Advanced Materials and Engineering Materials IX by : Peng Sheng Wei
Download or read book Advanced Materials and Engineering Materials IX written by Peng Sheng Wei and published by Trans Tech Publications Ltd. This book was released on 2020-09-02 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selected peer-reviewed full text papers from the 9th International Conference on Advanced Materials and Engineering Materials (ICAMEM 2020) Selected, peer-reviewed papers from the 9th International Conference on Advanced Materials and Engineering Materials (ICAMEM 2020), July 3-5, 2020, Bangkok, Thailand
Book Synopsis Point Defect Energies by : David Fisher
Download or read book Point Defect Energies written by David Fisher and published by Trans Tech Publications Ltd. This book was released on 2015-02-16 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Special topic volume
