Download or read book Single Crystal Growth and Structural Characterization of Intermetallic Phases for Thermoelectric Applications written by Mirtha Pillaca Quispe and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Single Crystal Growth and Characterization of Zintl Phase Thermoelectric Compounds written by David M. Smiadak and published by . This book was released on 2020 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zintl phases have been the focus of recent thermoelectric research due to their complex crystal structures, which include covalently bonded anionic sub-structures in a lattice of electropositive cations. The covalent bonds lead to high mobility, while strict electron-counting rules contribute to the formation of complex structures, which in turn lead to low thermal conductivity. In this manner,these compounds can fit the ideal phonon-glass and electron-crystal model for thermoelectric materials. Although Zintl phases are a promising class of thermoelectric materials that have been studied intensively since 2005, there are still several important fundamental questions that remain unanswered. These include questions related to anisotropic transport and how it relates to the crystalstructure, and the role played by intrinsic defects in determining carrier concentration. Additionally, the field of Zintl compounds is ever expanding; through the use of exploratory single crystal growths and the careful selection of starting composition, novel compounds and structure types can be discovered that may be promising thermoelectric candidates.Zintls with the Ca5M2Sb6 (M = Al, Ga, In) structure type, characterized by one-dimensional, ladder-like polyanions, were previously predicted to have highly anisotropic electrical conductivity. To investigate this anisotropic behavior, single crystals of Ca5M2Sb6 (M = Al, Ga, In) were grown in the current work via the self-flux method. These crystals grew preferentially along the polyanionic "ladders" of the structure, but only measured a few millimeters long by tens of microns thick. Characterizing the transport properties of these crystals both parallel and perpendicular to the growth direction demanded a novel characterization technique, as placing contacts by hand wasinfeasible in the perpendicular direction. Micro-fabrication techniques will be utilized whereby micro-ribbons are extracted from crystals both perpendicular and parallel to the preferred growth direction using a focused ion beam milling technique. Photolithography was then utilized to create a circuit of sensors for transport measurements. The resistivity, carrier concentration, and mobility of a micro-ribbon of Ca5In2Sb6 perpendicular to the preferred growth direction was successfully characterized using this approach. Resistivity measured in the parallel direction using a four-probe resistivity setup was found to be nearly 20 times higher than the perpendicular direction, confirming theoretical predictions.Experimental investigation of intrinsic defects in single crystals is also explored in the promising Mg3Sb2 system, accomplished using single crystal X-ray diffraction. The defect chemistry of this system for both Mg- and Sb-rich single crystal synthesis is investigated, where vacancies and interstitial sites are identified and quantified in collaboration with researchers at the Max Planck Institute for Chemical Physics of Solids in Dresden, Germany.Lastly, the discovery of a new quaternary Zintl phase, Ca9Zn3.1In0.9Sb9 is reported, which was discovered as a by-product during the attempted growth of Zn-doped Ca5In2Sb6. The new Ca9Zn3.1In0.9Sb9 structure was solved with the help of collaborators at the University of Delaware. Measurements of the electrical resistivity of the Ca9Zn3.1In0.9Sb9 crystals performed at MichiganState University showed results similar to that of already-optimized Ca9Zn4.5Sb9 compounds, pointing to promising thermoelectric performance.
Download or read book Crystal Growth of Intermetallics written by Peter Gille and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intermetallic compounds are in the focus of solid-state research for a wide range of future applications, e.g. in heterogeneous catalysis, for thermoelectric generators, and basic research of quantum critical effects. A comprehensive overview is given on various crystal growth techniques that are particularly adopted to intermetallic phases. Experienced authors from leading institutes give detailed descriptions of the specific problems in crystal growth of intermetallic compounds and approaches to solve them.
Download or read book Crystal Growth of Intermetallics written by Peter Gille and published by De Gruyter. This book was released on 2018-12-17 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intermetallic compounds are in the focus of solid-state research for a wide range of future applications, e.g. in heterogeneous catalysis, for thermoelectric generators, and basic research of quantum critical effects. A comprehensive overview is given on various crystal growth techniques that are particularly adopted to intermetallic phases. Experienced authors from leading institutes give detailed descriptions of the specific problems in crystal growth of intermetallic compounds and approaches to solve them.
Download or read book Crystal Growth And Characterization Of Advanced Materials Proceedings Of The International School On Crystal Growth And Characterization Of Advanced Matherials written by A N Christensen and published by World Scientific. This book was released on 1988-12-31 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents:Fundamental Aspects of Crystal Growth from the Melt (C Paorici & L Zanotti)Phase Diagrams in Crystal Growth (A N Christensen)Growth Procedures and Perfection of Semiconductor Materials (A Lindegaard-Andersen)Atomistic Aspects of Crystal Growth and Epitaxy (I Markov)Fundamentals of Liquid Phase Epitaxial Growth (P Kordos)Determination of Few Selected Basic Parameters of the Investigation of AIII-BV Semiconductors Using X-Ray Methods (H Bruhl)Multijunction Solar Cells (I Chambouleyron)Application of the Mossbauer Spectroscopy to the Study of Magnetic Materials (G Albanese)Metallic Magnetism in Modern Materials (D Givord)and others Readership: Materials scientists.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crystal Growth Bibliography written by and published by Springer Nature. This book was released on 1981 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modules Systems and Applications in Thermoelectrics written by David Michael Rowe and published by CRC Press. This book was released on 2012-04-25 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprising two volumes, Thermoelectrics and Its Energy Harvesting reviews the dramatic improvements in technology and application of thermoelectric energy with a specific intention to reduce and reuse waste heat and improve novel techniques for the efficient acquisition and use of energy. This volume, Modules, Systems and Applications in Thermoelectrics, discusses the practical, novel, and truly groundbreaking applications of thermoelectrics in a range of markets. The book details the U.S. interest in alternative energy and energy harvesting, specifically, the current efforts to use thermoelectric generators (TGs) to reduce emissions. Internationally, it expounds on the strong interest in Japan, Korea and Europe to incorporate TGs in cars to reduce fuel consumption and meet EU carbon dioxide emission targets; the European plans to build an isotopic powered thermoelectric generator; and India’s use of TG s in converting hot water from steel mills into electricity.
Download or read book Growth and Structural Characterization of Single Crystalline Phases written by A. A. Balchin and published by . This book was released on 1992 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Zeitschrift F r Kristallographie written by and published by . This book was released on 2007 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography written by Pierre Villars and published by Walter de Gruyter. This book was released on 2012-12-21 with total page 1827 pages. Available in PDF, EPUB and Kindle. Book excerpt: By browsing about 10 000 000 scientific articles of over 200 major journals mainly in a 'cover to cover approach' some 200 000 publications were selected. The extracted data is part of the following fundamental material research fields: crystal structures (S), phase diagrams (also called constitution) (C) and the comprehensive field of intrinsic physical properties (P). This work has been done systematically starting with the literature going back to 1900. The above mentioned research field codes (S, C, P) as well as the chemical systems investigated in each publication were included in the present work. The aim of the Inorganic Substances Bibliography is to provide researchers with a comprehensive compilation of all up to now published scientific publications on inorganic systems in only three handy volumes.
Download or read book The Physics and Chemistry of Inorganic Clathrates written by George S. Nolas and published by Springer. This book was released on 2014-08-12 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemistry and physics of group 14 elements such as silicon and germanium have been extensively studied, largely due to their fundamental importance in the development of semiconductor electronics. In addition, crystalline open-framework and nano-porous materials are attracting increasing attention for their potential technological applications. Inorganic open-framework materials comprised of group 14 elements crystallizing in crystal structures known as clathrates are of particular interest. These materials correspond to expanded forms, and in some cases metastable allotropes, of silicon, germanium and tin. The novel crystal structures these materials possess are intimately related to the unique physical properties they exhibit. Just as interesting as the structure and properties group 14 clathrates display is the diverse range of synthetic techniques developed to synthesize and grow single crystals of these materials. This volume will encompass many of these aspects and describe their potential for important technological applications.
Download or read book Crystal Growth and Perfection of Selected Intermetallic and Oxide Compounds written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of the present work is to clarify the interplay between the complex technological chain of crystal preparation, chemical and structural perfection of grown crystals of intermetallic compounds and oxides and their physical properties. This technological chain includes detailed studies of unknown or insufficiently known phase diagrams, their correlation with growth conditions and optimisation of process parameters for obtaining single crystals with high chemical and physical perfection. The measurements of the physical properties of the grown crystals such as superconductivity, thermoelectric or dielectric properties not only show new features and properties for application of the materials obtained, but also allow conclusions of the crystal perfection. The studies are focused on the following systems: RENi2B2C borocarbides (RE=Y, Tb or Ho) displaying superconductivity, magnetic order and a strong interplay between magnetic and superconducting properties for YNi2B2C, TbNi2B2C, HoNi2B2C, respectively; CeSi2-?Ô and Ru2Si3 as examples of systems with magnetic and promising thermoelectric properties, respectively; MgB2 and LiBC to test of theoretical predictions of the new superconducting intermetallic compounds discovered in the last years; SrTiO3 and SrZrO3 oxide compounds with special dielectric and optical properties. For this wide spectrum of substances necessarily different growth techniques were applied. That is mainly the floating zone (FZ) or travelling solvent floating zone (TSFZ) techniques with optical heating. Flux techniques were used if the vapour pressure of composing elements is high such as for Mg and Li. The crucible free FZ technique is very attractive for the crystal growth of these intermetallic and oxide compounds to avoid contamination with the crucible material, if the melts have very high chemical reactivity, high melting temperatures and if a large crystal size (at least 3-5 mm) is desired for corresponding physical measurements. One spe.
Download or read book Ternary and Multinary Compounds written by R.D Tomlinson and published by CRC Press. This book was released on 2020-10-29 with total page 1077 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multinary compounds are now used in a wide range of devices, including photovoltaic solar cells, light emitters and detectors, and piezoelectric actuators. Ternary and Multinary Compounds provides an interdisciplinary forum for scientists and engineers working on fundamental and applied aspects of these materials. The volume focuses on optoelectronic properties, electronic band structure, charge carrier transport, optical and magnetic properties, and superconductivity. It includes chapters on the research and development of new techniques and novel materials, such as laser ablation deposition and ferroelectrics.
Download or read book Recent Trends in Thermoelectric Materials Research Part Two written by and published by Academic Press. This book was released on 2000-10-25 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its inception in 1966, the series of numbered volumes known as Semiconductors and Semimetals has distinguished itself through the careful selection of well-known authors, editors, and contributors. The Willardson and Beer series, as it is widely known, has succeeded in producing numerous landmark volumes and chapters. Not only did many of these volumes make an impact at the time of their publication, but they continue to be well-cited years after their original release. Recently, Professor Eicke R. Weber of the University of California at Berkeley joined as a co-editor of the series. Professor Weber, a well-known expert in the field of semiconductor materials, will further contribute to continuing the series' tradition of publishing timely, highly relevant, and long-impacting volumes. Some of the recent volumes, such as Hydrogen in Semiconductors, Imperfections in III/V Materials, Epitaxial Microstructures, High-Speed Heterostructure Devices, Oxygen in Silicon, and others promise that this tradition will be maintained and even expanded.Thermoelectric materials may be used for solid state refrigeration or power generation applications via the large Peltier effect in these materials. To be an effective thermoelectric material, a material must possess a large Seebeck coefficient, a low resistivity and a low thermal conductivity. Due to increased need for alternative energy sources providing environmentally friendly refrigeration and power generation, thermoelectric materials research experienced a rebirth in the mid 1990's. Semiconductors and Semimetals, Volume 70: Recent Trends in Thermoelectric Materials Research: Part Two provides an overview of much of this research in thermoelectric materials during the decade of the 1990's. New materials and new material concepts such as quantum well and superlattice structures gave hope to the possibilities that might be achieved. An effort was made to focus on these new materials and not on materials such as BiTe alloys, since such recent reviews are available. Experts in the field who were active researchers during this period were the primary authors to this series of review articles. This is the most complete collection of review articles that are primarily focussed on new materials and new concepts that is existence to date.
Download or read book Metals Abstracts written by and published by . This book was released on 1998 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt:
