Download or read book Local Structure and Dynamics of III V Semiconductor Alloys by High Resolution X ray Pair Distribution Function Analysis written by Il-Kyoung Jeong and published by . This book was released on 2001 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Local Atomic Structure of Semiconductor Alloys Using Pair Distribution Function Analysis written by and published by . This book was released on 2002 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have been taking advantage of recent experimental developments, which involve utilizing diffraction data from x-rays or neutrons out to very large wave-vectors, to obtain a detailed structural characterization of semiconductor alloys. This approach allows an accurate Pair Distribution Function (PDF) to be obtained to 20A and beyond and reveals the local structure of the alloy directly. These data can be modeled explicitly to learn about local correlations and short-range order in materials. We are combining theory, modeling and experiments to study a range of materials from semiconductors to thermoelectrics and proton conductors.

Download or read book American Doctoral Dissertations written by and published by . This book was released on 2000 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multinary Alloys Based on III V Semiconductors written by Vasyl Tomashyk and published by CRC Press. This book was released on 2018-12-07 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: III-V semiconductors have attracted considerable attention due to their applications in the fabrication of electronic and optoelectronic devices as light emitting diodes and solar cells. The electrical properties of these semiconductors can also be tuned by adding impurity atoms. Because of their wide application in various devices, the search for new semiconductor materials and the improvement of existing materials is an important field of study. This book covers all known information about phase relations in multinary systems based on III-V semiconductors, providing the first systematic account of phase equilibria in multinary systems based on III-V semiconductors and making research originally published in Russian accessible to the wider scientific community. This book will be of interest to undergraduate and graduate students studying materials science, solid state chemistry, and engineering. It will also be relevant for researchers at industrial and national laboratories, in addition to phase diagram researchers, inorganic chemists, and solid state physicists. Features: Provides up-to-date experimental and theoretical information Allows readers to synthesize semiconducting materials with predetermined properties Delivers a critical evaluation of many industrially important systems presented in the form of two-dimensional sections for the condensed phases

Download or read book Ternary Alloys Based on III V Semiconductors written by Vasyl Tomashyk and published by CRC Press. This book was released on 2017-09-29 with total page 637 pages. Available in PDF, EPUB and Kindle. Book excerpt: III-V semiconductors have attracted considerable attention due to their applications in the fabrication of electronic and optoelectronic devices as light-emitting diodes and solar cells. Because of their wide applications in a variety of devices, the search for new semiconductor materials and the improvement of existing materials is an important field of study. This new book covers all known information about phase relations in ternary systems based on III-V semiconductors. This book will be of interest to undergraduate and graduate students studying materials science, solid state chemistry, and engineering. It will also be relevant for researchers at industrial and national laboratories, in addition to phase diagram researchers, inorganic chemists, and solid state physicists.

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2001 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quaternary Alloys Based on III V Semiconductors written by Vasyl Tomashyk and published by CRC Press. This book was released on 2018-04-17 with total page 647 pages. Available in PDF, EPUB and Kindle. Book excerpt: III-V semiconductors have attracted considerable attention due to their applications in the fabrication of electronic and optoelectronic devices as light emitting diodes and solar cells. The electrical properties of these semiconductors can also be tuned by adding impurity atoms. Because of their wide application in various devices, the search for new semiconductor materials and the improvement of existing materials is an important field of study. Doping with impurities is a common method of modifying and diversifying the properties of physical and chemical semiconductors. This book covers all known information about phase relations in quaternary systems based on III-V semiconductors, providing he first systematic account of phase equilibria in quaternary systems based on III-V semiconductors and making research originally published in Russian accessible to the wider scientific community. Features: Contains up-to-date experimental and theoretical information Allows readers to synthesize semiconducting materials with predetermined properties Delivers a critical evaluation of many industrially important systems presented in the form of two-dimensional sections for the condensed phases

Download or read book Neutron Scattering in Earth Sciences written by Hans Rudolf Wenk and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 63 of Reviews in Mineralogy and Geochemistry provides an introduction for those not yet familiar with neutrons by describing basic features of neutrons and their interaction with matter as well illustrating important applications. The volume is divided into 17 Chapters. The first two chapters introduce properties of neutrons and neutron facilities, setting the stage for applications. Some applications rely on single crystals (Chapter 3) but mostly powders (Chapters 4-5) and bulk polycrystals (Chapters 15-16) are analyzed, at ambient conditions as well as low and high temperature and high pressure (Chapters 7-9). Characterization of magnetic structures remains a core application of neutron scattering (Chapter 6). The analysis of neutron data is not trivial and crystallographic methods have been modified to take account of the complexities, such as the Rietveld technique (Chapter 4) and the pair distribution function (Chapter 11). Information is not only obtained about solids but about liquids, melts and aqueous solutions as well (Chapters 11-13). In fact this field, approached with inelastic scattering (Chapter 10) and small angle scattering (Chapter 13) is opening unprecedented opportunities for earth sciences. Small angle scattering also contributes information about microstructures (Chapter 14). Neutron diffraction has become a favorite method to quantify residual stresses in deformed materials (Chapter 16) as well as preferred orientation patterns (Chapter 15). The volume concludes with a short introduction into neutron tomography and radiography that may well emerge as a principal application of neutron scattering in the future (Chapter 17).

Download or read book High Energy Synchrotron X ray Study of Fatique Damage in Amorphous and Polycrystalline Engineering Alloys written by Chih-Pin Chuang and published by . This book was released on 2013 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dissertation summarizes a series of studies on the fatigue damage of both amorphous and crystalline engineering alloys. The attention focuses on the utilization of synchrotron x-ray scattering related techniques for advanced material characterizations. In the first part of the research, critical issues regarding the mechanical response and structural evolution of Bulk-Metallic Glasses (BMGs) in the elastic region are addressed. The effects of cyclic-loading on the microstructures of an amorphous alloy are investigated, aiming to provide better mechanistic understandings of fatigue damage in BMGs. The second part of the research focuses on the characterization method based on two-dimensional X-ray diffraction to better predict the fatigue life of Ni-based superalloys. Bulk-amorphous metallic alloys are a new class of materials that exhibit superior material properties. X-ray pair-distribution function (PDF) analysis is used to study the deformation of BMGs on the microscopic scale in the elastic region. The results show that the deformation behavior of BMGs is fundamentally visco-elastic. The effect of "fatigue" on the fatigue behavior and atomic structure of Zr-based BMGs has been investigated. Fatigue experiments on the failed-by-fatigue samples indicate that the remnants generally have similar or longer fatigue life than the as-cast samples. Meanwhile, the pair-distribution-function (PDF) analysis of the as-cast and post-fatigue samples showed very small changes of local atomic structures. These observations suggest that the fatigue life of the 6-mm in-diameter Zr-based BMG is dominated by the number of pre-existing crack-initiation sites in the sample For the study of fatigue damage in Ni-based superalloys, the correlation between the microstructure, from the x-ray diffraction point of view, and fatigue life is established. The development of residual strain/stress, can be measured accurately by in-situ two-dimensional (2D) x-ray diffraction. The size of the compressive strain zone ahead of a notch tip increases with fatigue life and is most sensitive during the initial cycles and final stage. However, the estimation of fatigue damage is qualitative, not quantitative. Finally, the strain variation possibly caused by the intergranuler stresses is large at the beginning of the fatigue life, but decrease with increasing fatigue cycles, which indicates more and more grains were plastically deformed.

Download or read book Physical Properties of III V Semiconductor Compounds written by Sadao Adachi and published by John Wiley & Sons. This book was released on 1992-11-10 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this book is two-fold: to examine key properties of III-V compounds and to present diverse material parameters and constants of these semiconductors for a variety of basic research and device applications. Emphasis is placed on material properties not only of Inp but also of InAs, GaAs and GaP binaries.

Download or read book Characterization of Semiconductor Heterostructures and Nanostructures written by Claudio Ferrari and published by Elsevier Inc. Chapters. This book was released on 2013-04-11 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bands and Photons in III V Semiconductor Quantum Structures written by Igor Vurgaftman and published by Oxford University Press, USA. This book was released on 2021-01-03 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book takes the reader from the very basics of III-V semiconductors (some preparation in quantum mechanics and electromagnetism is helpful) and shows how seemingly obscure results such as detailed forms of the Hamiltonian, optical transition strengths, and recombination mechanisms follow.

Download or read book Underneath the Bragg Peaks written by Takeshi Egami and published by Elsevier. This book was released on 2003-10-02 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table of contents

Download or read book Physics and Chemistry of III V Compound Semiconductor Interfaces written by Carl Wilmsen and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of the 111-V compound semiconductors to device fabrica tion has grown considerably in the last few years. This process has been stimulated, in part, by the advancement in the understanding of the interface physics and chemistry of the III-V's. The literature on this subject is spread over the last 15 years and appears in many journals and conference proceedings. Understanding this literature requires consider able effort by the seasoned researcher, and even more for those starting out in the field or by engineers and scientists who wish to apply this knowledge to the fabrication of devices. The purpose of this book is to bring together much of the fundamental and practical knowledge on the physics and chemistry of the 111-V compounds with metals and dielectrics. The authors of this book have endeavored to provide concise overviews of these areas with many tahles ancI grarhs whic. h c. omr>are and summarize the literature. In this way, the book serves as both an insightful treatise on III-V interfaces and a handy reference to the literature. The selection of authors was mandated by the desire to include both fundamental and practical approaches, covering device and material aspects of the interfaces. All of the authors are recognized experts on III-V interfaces and each has worked for many years in his subject area. This experience is projected in the breadth of understanding in each chapter.

Download or read book High Resolution X Ray Diffraction of III V Semiconductor Thin Films written by Hédi Fitouri and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Local Strain in ZnSe1 x Tex Alloys written by Peter F. Peterson and published by . This book was released on 2001 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Vibrational Dynamics in Semiconductor Compounds and Alloys written by Stefanie Eckner and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, the binary III-V semiconductors GaP, GaAs, GaSb, InP, InAs, und InSb, and the ternary alloys (In,Ga)P and (In,Ga)As were studied using temperature dependent extended x-ray absorption fine structure spectroscopy (EXAFS) measurements. In the alloy systems, the element-specific effective bond-stretching force constants were determined as a function of composition. To broaden the fundament of the conclusions, literature values of the ternary II-VI alloy Zn(Se,Te) were incorporated in the discussion. Different trends with composition are visible for (In,Ga)P on the one hand and (In,Ga)As and Zn(Se,Te) on the other hand. Strikingly, most of the six bond species under study (Ga-P, In-P, Ga-As, In-As, Zn-Se, and Zn-Te) exhibit the same relative change in bond-stretching force constant as a function of the relative change in bond length. Additionally, exactly the same relation is known from the literature as describing pressure-dependent EXAFS measurements of CdTe. The composition-dependent change of bond-stretching force constants in ternary zinc-blende semiconductor alloys is therefore caused mainly by the forced bond length change occurring in these materials. In addition to the bond-stretching force constants, effective bond-bending force constants were determined for the binary materials. Either type of force constants can be described as a function of ionicity and reduced mass of the interatomic bond. In the analysis great care has been taken to properly assess the uncertainties of the results. The comprehensive testing scenarios required to do this, also enable a general evaluation of the potential of the determination of bond force constants from temperature-dependent EXAFS measurements.