Download or read book Fundamental Electronic Properties of Donor Type Graphite Intercalated Compounds written by S. Rabii and published by . This book was released on 1984 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graphite intercalation compounds are a large family of quasi-two dimensional synthetic metals. Fundamental interest centers on their unusual crystal structures and their effects on electronic properties. Practical applications are envisaged as lightweight conductors of electricity. The goals of this program are to understand the electronic structure of donor-type compounds, with a view toward obtaining detailed correlations between chemical and physical variables. Emphasis is placed on the one-electron spectrum, transport and optical properties and charge distributions. Synthetic methods are developed to provide high-quality specimens for a variety of physical measurements. Band theoretical techniques are applied to develop models for the electronic structure. Iteration between theory and experiment leads to more sophisticated models.

Download or read book Graphite Intercalation Compounds II written by Hartmut Zabel and published by Springer Science & Business Media. This book was released on 2013-03-07 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research on graphite intercalation compounds often acts as a forerunner for research in other sciences. For instance, the concept of staging, which is fundamental to graphite intercalation compounds, is also relevant to surface science in connection with adsorbates on metal surfaces and to high-temperature superconducting oxide layer materials. Phonon-folding and mode-splitting effects are not only basic to graphite intercalation compounds but also to polytypical systems such as supercon ductors, superlattices, and metal and semiconductor superlattices. Charge transfer effects playa tremendously important role in many areas, and they can be most easily and fundamentally studied with intercalated graphite. This list could be augmented with many more examples. The important message, however, is that graphite inter calation compounds represent a class of materials that not only can be used for testing a variety of condensed-matter concepts, but also stimulates new ideas and approaches. This volume is the second of a two-volume set. The first volume addressed the structural and dynamical aspects of graphite intercalation compounds, together with the chemistry and intercalation of new compounds. This second volume provides an up-to-date status report from expert researchers on the transport, magnetic, elec tronic and optical properties ofthis unique class of materials. The band-structure cal culations of the various donor and acceptor compounds are discussed in depth, and detailed reviews are provided ofthe experimental verification ofthe electronic struc ture in terms of their photoemission spectra and optical properties.

Download or read book Experimental and Theoretical Studies of Donor Type Graphite Intercalated Compounds written by John E. Fischer and published by . This book was released on 1980 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graphite intercalation compounds are a large family of quasi two dimensional synthetic metals. Fundamental interest centers on their unusual crystal structures and their effects on electronic properties. Practical applications are envisaged as lightweight conductors of electricity. The goals of this program are to understand the electronic structure of donor-type compounds, with a view toward obtaining detailed correlations between chemical and physical variables. Emphasis is placed on the one-electron spectrum, transport and optical properties and charge distributions. Synthetic methods are developed to provide high-quality specimens for a variety of physical measurements. Band theoretical techniques are applied to develop models for the electronic structure. Iteration between theory and experiment leads to more sophisticated models.

Download or read book Graphite Intercalation Compounds II written by Hartmut Zabel and published by Springer. This book was released on 1992-08-13 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research on graphite intercalation compounds often acts as a forerunner for research in other sciences. For instance, the concept of staging, which is fundamental to graphite intercalation compounds, is also relevant to surface science in connection with adsorbates on metal surfaces and to high-temperature superconducting oxide layer materials. Phonon-folding and mode-splitting effects are not only basic to graphite intercalation compounds but also to polytypical systems such as supercon ductors, superlattices, and metal and semiconductor superlattices. Charge transfer effects playa tremendously important role in many areas, and they can be most easily and fundamentally studied with intercalated graphite. This list could be augmented with many more examples. The important message, however, is that graphite inter calation compounds represent a class of materials that not only can be used for testing a variety of condensed-matter concepts, but also stimulates new ideas and approaches. This volume is the second of a two-volume set. The first volume addressed the structural and dynamical aspects of graphite intercalation compounds, together with the chemistry and intercalation of new compounds. This second volume provides an up-to-date status report from expert researchers on the transport, magnetic, elec tronic and optical properties ofthis unique class of materials. The band-structure cal culations of the various donor and acceptor compounds are discussed in depth, and detailed reviews are provided ofthe experimental verification ofthe electronic struc ture in terms of their photoemission spectra and optical properties.

Download or read book Graphite Intercalation Compounds and Applications written by Toshiaki Enoki and published by Oxford University Press. This book was released on 2003-03-27 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graphite intercalation compounds are a new class of electronic materials that are classified as graphite-based host guest systems. They have specific structural features based on the alternating stacking of graphite and guest intercalate sheets. The electronic structures show two-dimensional metallic properties with a large variety of features including superconductivity. They are also interesting from the point of two-dimensional magnetic systems. This book presents the synthesis, crystal structures, phase transitions, lattice dynamics, electronic structures, electron transport properties, magnetic properties, surface phenomena, and applications of graphite intercalation compounds. The applications covered include batteries, highly conductive graphite fibers, exfoliated graphite and intercalated fullerenes and nanotubes.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Electronic properties of graphite intercalation compounds written by Richard André Wachnik and published by . This book was released on 1982 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electronic Properties of Graphite Intercalation Compounds written by John E. Fischer and published by . This book was released on 1977 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Graphite Intercalation Compounds I written by Hartmut Zabel and published by Springer Science & Business Media. This book was released on 2013-03-07 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: The progress of materials science depends on the development of novel materials and the development of novel experimental techniques. The research on graphite intercalation compounds combines both aspects: new compounds with strikingly new and anisotropic properties have been synthesized and analyzed during the past couple of years by means of state-of-the-art experimental methods. At the same time, the preparation of the compounds already known has improved con siderably, giving increased reliability and reproducibility of the experimental results. The high quality experimental data now available have stimulated theo retical work. Moreover, the theoretical work has had a great impact on further experimental studies, with the effect of a much improved understanding of this class of materials. This volume is dedicated to a thorough description of all relevant experimen tal and theoretical aspects of the structural and dynamical properties of graphite intercalation compounds. Because of the large number of topics, a second vol ume, which is now in preparation, will follow and will treat the electronic, transport, magnetic, and optical properties. The second volume will also contain a chapter on applications of graphite intercalation compounds. There have been a number of reviews written on selected aspects of these compounds in various journals and conference proceedings during the last couple of years, but this is the first comprehensive review since the thorough overview provided by M.S. Dresselhaus and G. Dresselhaus appeared ten years ago.

Download or read book Research in Progress written by and published by . This book was released on 1980 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Graphite Intercalation Compounds Electronic Properties and Their Correlation with Chemistry written by John E. Fisher and published by . This book was released on 1980 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Superconducting Intercalated Graphite written by Nicolas Emerya and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The discovery in 2005 of superconductivity in YbC6 and CaC6, with substantially higher critical temperatures than the previously observed among the family of the graphite intercalation compounds, has largely renewed the interest for these well known lamellar compounds. Indeed, these critical temperatures reach 6.5 and 11.5 K respectively for ytterbium- and calcium-graphite phases. It was consequently interesting to collect all the informations concerning the superconductivity of these compounds from the discovery of this phenomenon observed in the heavy alkali metals graphite intercalation compounds in 1965, insisting particularly on the recent advances in this research field. After a general introduction that describes all the carbon materials, which are extremely various with dimensionalities varying from 3 to 0, leading to their large aptitude for the insertion/intercalation reactions, the authors widely developed the case of graphite: chemical bonds, crystal and electronic structures, anisotropy and ability to become a host structure. The authors insist on its strong anisotropy of chemical reactivity that allows the synthesis of very numerous intercalation compounds. The distinctive features of the intercalation reaction into graphite are reviewed (systematic charge transfer, staging, etc...) and are particularly developed in the case of the donor-type intercalation compounds, among which is precisely observed the superconductivity. For the latter, the various synthesis methods are successively described, showing the best route to use in order to obtain each type of compound. Then the authors review with detail the binary compounds, emphasising their distinctive crystal and electronic structures and also their transport properties. The authors describe the superconductivity of all the compounds belonging to this family and show this property. In the last part, the authors compare these superconducting binary intercalated graphite compounds with other lamellar superconductor: magnesium diboride. The ternary compounds are then studied, and the poly-layered nature of their intercalated sheets is given special attention. Their distinctive electronic structure is presented and their superconducting properties are described.

Download or read book Electronic properties of graphite intercalation compounds and tantalum disulphide at high magnetic fields written by S. Tanuma and published by . This book was released on 1978 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microscopic Physical and Chemical Properties of Graphite Intercalation Compounds written by and published by . This book was released on 1992 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical spectroscopy (Raman, FTIR and Reflection) was used to study a variety of acceptor- and donor-type compounds synthesized to determine the microscopic models consistent with the spectrocsopic results. General finding is that the electrical conduction properties of these compounds can be understood on the basis that the intercalation of atomic and/or molecular species between the host graphite layers either raises or lowers the Fermi level (E{sub F)} in a graphitic band structure. This movement of E{sub F} is accomplished via a charge transfer of electrons from the intercalate layers to the graphitic layers (donor compounds), or vice versa (acceptor compounds). Furthermore, the band structure must be modified to take into account the layers of charge that occur as a result of the charge transfer. This charge layering introduces additional bands of states near E{sub F}, which are discussed. Charge-transfer also induces a perturbation of the graphitic normal mode frequencies which can be understood as the result of a contraction (acceptor compounds) or expansion (donor compounds) of the intralayer C-C bonds. Ab-initio calculations support this view and are in reasonable agreement with experimental data.

Download or read book Research in Progress Between and written by United States. Army Research Office and published by . This book was released on 1978 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fundamental Physicochemical Properties of Germanene related Materials written by Chi-Hsuan Lee and published by Elsevier. This book was released on 2023-05-23 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamental Physicochemical Properties of Germanene-related Materials: A Theoretical Perspective provides a comprehensive review of germanene-related materials to help users understand the essential properties of these compounds. The book covers various germanium complex states such as germanium oxides, germanium on Ag, germanium/silicon composites and germanium compounds. Diverse phenomena are clearly illustrated using the most outstanding candidates of the germanium/germanene-related material. Delicate simulations and analyses are thoroughly demonstrated under the first-principles method, being fully assisted by phenomenological models. Macroscopic phenomena in chemical systems, including their principles, practices and concepts of physics such as energy, structure, thermodynamics and quantum chemistry are fully covered. Germanium-based materials play critical roles in the basic and applied sciences, as clearly revealed in other group-IV and group-V condensed-matter systems. Their atomic configurations are suitable for creating the active chemical bonding among the identical and/or different nearest-neighboring atoms leading to diverse physical/chemical/material environments. Provides a comprehensive review of germanene-related materials with a physicochemical and theoretical foundation that is useful for readers in understanding the essential properties of these compounds Presents a unique theoretical framework under single and multi-hybridization theory Contains significant combinations with phenomenological and experimental measurements Focuses on the study of macroscopic phenomena in chemical systems in terms of their principles, practices and concepts of physics such as energy, structure, thermodynamics and quantum chemistry

Download or read book Electronic and Optical Properties of Graphite Related Systems written by Chiun-Yan Lin and published by CRC Press. This book was released on 2017-12-12 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of electronic and optical properties of graphite-related systems. It presents a well-developed and up-to-date theoretical model and addresses important advances in essential properties and diverse quantization phenomena. Key features include various Hamiltonian models, dimension-enriched carbon-related systems, complete and unusual results, detailed comparisons with the experimental measurements, clear physical pictures, and further generalizations to other emergent 2D materials. It also covers potential applications, such as touch-screen panel devices, FETs, supercapacitors, sensors, LEDs, solar cells, photodetectors, and photomodulators.