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Magnetic Interactions In Molecules And Solids
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Book Synopsis Magnetic Interactions in Molecules and Solids by : Coen de Graaf
Download or read book Magnetic Interactions in Molecules and Solids written by Coen de Graaf and published by Springer. This book was released on 2015-09-04 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook is the second volume in the Theoretical Chemistry and Computational Modeling series and aims to explain the theoretical basis of magnetic interactions at a level that will be useful for master students in physical, inorganic and organic chemistry. The book gives a treatment of magnetic interactions in terms of the phenomenological spin Hamiltonians that have been such powerful tools for chemistry and physics in the past half century, starting from the simple Heisenberg and Ising Hamiltonians and ending with Hamiltonians that include biquadratic, cyclic or anisotropic exchange. On the other hand, it also explains how quantum chemical methods, reaching from simple mean field methods to accurate models that include the effects of electron correlation and spin-orbit coupling, can help to understand the magnetic properties. Connecting the two perspectives is an essential aspect of the book, since it leads to a deeper understanding of the relation between physical phenomena and basic properties. It also makes clear that in many cases one can derive magnetic coupling parameters not only from experiment, but also from accurate ab initio calculations. The book starts with introducing a selection of basic concepts and tools. Throughout the book the text is interlarded with exercises, stimulating the students to not only read but also verify the assertions and perform (parts of) the derivations by themselves. In addition, each chapter ends with a number of problems that can be used to check whether the material has been understood.
Book Synopsis Magnetic Interactions in Solids by : Herbert Jack Zeiger
Download or read book Magnetic Interactions in Solids written by Herbert Jack Zeiger and published by . This book was released on 1973 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Magnetism written by Joel S. Miller and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combining the contemporary knowledge from widely scattered sources, this is a much-needed and comprehensive overview of the field. In maintaining a balance between theory and experiment, the book guides both advanced students and specialists to this research area. Topical reviews written by the foremost scientists explain recent trends and advances, focusing on the correlations between electronic structure and magnetic properties. The book spans recent trends in magnetism for molecules -- as well as inorganic-based materials, with an emphasis on new phenomena being explored from both experimental and theoretical viewpoints with the aim of understanding magnetism on the atomic scale. The volume helps readers evaluate their own experimental observations and serves as a basis for the design of new magnetic materials. Topics covered include: * Metallocenium Salts of Radical Anion Bis-(dichalcogenate) metalates * Chiral Molecule-Based Magnets * Cooperative Magnetic Behavior in Metal-Dicyanamide Complexes * Lanthanide Ions in Molecular Exchange Coupled Systems * Monte Carlo Simulation * Metallocene-Based Magnets * Magnetic Nanoporous Molecular Materials A unique reference work, indispensable for everyone concerned with the phenomena of magnetism.
Book Synopsis Magnetism: A Supramolecular Function by : O. Kahn
Download or read book Magnetism: A Supramolecular Function written by O. Kahn and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 657 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular magnetism is a new field of research dealing with the synthesis and study of the physical properties of molecular assemblies involving open-shell units. It is essentially interdisciplinary, joining together organic, organometallic and inorganic chemists, as well as theoreticians, physicists and materials scientists. At the core of research into molecular magnetism lie design and synthesis of new molecular assemblies exhibiting bulk properties such as long-range magnetic ordering or bistability with an hysteresis effect, which confers a memory effect on the system. In such terms, magnetism may be considered a supramolecular function. The first eight contributions to this volume present the state of the art in organic supramolecular chemistry, emphasising interlocked systems and molecular trees. The following six articles are devoted to molecular materials constructed from organic radicals and transition metal units. Molecular bistability is then focused on, followed by metal-organic and coordination magnetic materials. A new approach to nano-sized particles closes the work.
Download or read book Magnetism written by Joel S. Miller and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic phenomena and materials are everywhere. Our understanding of magnetic behavior, once thought to be mature, has enjoyed new impetus from contributions ranging from molecular chemistry, materials chemistry and sciences to solid state physics. New phenomena are explored that open promising perspectives for commercial applications in future - carrying out chemical reactions in magnetic fields is just one of those. The spectrum spans molecule-based - organic, (bio)inorganic, and hybrid - compounds, metallic materials as well as their oxides forming thin films, nanoparticles, wires etc. Reflecting contemporary knowledge, this open series of volumes provides a much-needed comprehensive overview of this growing interdisciplinary field. Topical reviews written by foremost scientists explain the trends and latest advances in a clear and detailed way. By maintaining the balance between theory and experiment, the book provides a guide for both advanced students and specialists to this research area. It will help evaluate their own experimental observations and serve as a basis for the design of new magnetic materials. A unique reference work, indispensable for everyone concerned with the phenomena of magnetism!
Book Synopsis Molecular Magnetic Materials by : Barbara Sieklucka
Download or read book Molecular Magnetic Materials written by Barbara Sieklucka and published by John Wiley & Sons. This book was released on 2017-01-17 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of this rapidly expanding interdisciplinary field of research. After a short introduction to the basics of magnetism and molecular magnetism, the text goes on to cover specific properties of molecular magnetic materials as well as their current and future applications. Design strategies for acquiring molecular magnetic materials with desired physical properties are discussed, as are such multifunctional materials as high Tc magnets, chiral and luminescent magnets, magnetic sponges as well as photo- and piezo-switching magnets. The result is an excellent resource for materials scientists, chemists, physicists and crystal engineers either entering or already working in the field.
Book Synopsis Metal-Organic and Organic Molecular Magnets by : Peter Day
Download or read book Metal-Organic and Organic Molecular Magnets written by Peter Day and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditionally, magnetic materials have been metals or, if inorganic compounds such as oxides, of continuous lattice type. However, in recent years chemists have synthesized increasing numbers of crystalline solids based on molecular building blocks in the form of coordination and organometallic complexes or purely organic molecules, which exhibit spontaneous magnetization. In striking contrast to conventional magnets, these materials are made from solutions close to room temperature rather than by metallurgical or ceramic methods. This book, which originates from contributions to a Discussion Meeting of The Royal Society of London, brings together many of the leading international practitioners in the field, who survey their own recent work and place it in the context of the wider fields of magnetism and supramolecular chemistry. All aspects of molecular-based magnets are addressed, including synthesis, structure-property relations and physical properties. Contents include details of the characterization of the first purely organic ferromagnet, the synthesis of high coercivity materials and a unique description of new materials with Curie temperatures well above ambient. A coherent survey of this rapidly developing field for the more general reader, Metal-Organic and Organic Molecular Magnets will also be welcomed by researchers and lecturers in materials science and inorganic or solid state chemistry.
Book Synopsis Magnetic Molecular Materials by : D. Gatteschi
Download or read book Magnetic Molecular Materials written by D. Gatteschi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the major challenges of science in the last few years of the second millennium is learning how to design materials which can fulfill specific tasks. Ambitious as it may be, the possibilities of success are not ne~li~ble provided that all the different expertises merge to overcome the limits of eXIsting disciplines and forming new paradigms science. The NATO Advanced Research Workshop on "Magnetic Molecular Materials" was organized with the above considerations in mind in order to determine which are the most appropriate synthetic strategies, experimental techniques of investigation, and theoretical models which are needed in order to develop new classes of magnetic materials which are based on molecules rather than on metallic or ionic lattices. Why molecules? The answer may be obvious: molecular chemistry in principle fine can tune the structures and the properties of complex aggregates, and nature already provides a large number of molecular aggregates which can perform the most disparate functions. The contributions collected in this book provide a rather complete view of the current research accomplishments of magnetic molecular materials. There are several different synthetic approaches which are followed ranging from purely organic to inorganic materials. Some encouraging successes have already been achieved, even if the critical temperatures below which magnetic order is observed still are in the range requiring liquid helium.
Book Synopsis Research Frontiers In Magneto Chemistry by : C J O'connor
Download or read book Research Frontiers In Magneto Chemistry written by C J O'connor and published by World Scientific. This book was released on 1993-04-28 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past 25 years, there have been many advances in the understanding of magnetic phenomena in molecular systems. For example, a variety of low-dimensional materials, and many new ferromagnetic, antiferromagnetic, and ferrimagnetic systems have been synthesized and analyzed; metal cluster compounds that exhibit magnetic exchange have been examined; new orbital overlap theories have been proposed to explain magneto-structural correlations in exchange coupled systems; and efforts directed toward the preparation of an organic ferromagnetic material have produced new and interesting compounds. There have also been many advances in the use of magnetism as a probe of inorganic biomolecules.This volume brings together reviews of current research in magnetochemistry that are written by the world's leading researchers in the fields of chemistry, physics, materials science, and magnetism. It contains comprehensive and in-depth reviews that describe some of the current activities of these scientists and their research and lays the foundation for future research endeavors.
Book Synopsis Molecular Magnetism: From Molecular Assemblies to the Devices by : E. Coronado
Download or read book Molecular Magnetism: From Molecular Assemblies to the Devices written by E. Coronado and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular Magnetism: From Molecular Assemblies to the Devices reviews the state of the art in the area. It is organized in two parts, the first of which introduces the basic concepts, theories and physical techniques required for the investigation of the magnetic molecular materials, comparing them with those used in the study of classical magnetic materials. Here the reader will find: (i) a detailed discussion of the electronic processes involved in the magnetic interaction mechanisms of molecular systems, including electron delocalization and spin polarization effects; (ii) a presentation of the available theoretical models based on spin and Hubbard Hamiltonians; and (iii) a description of the specific physical investigative techniques used to characterize the materials. The second part presents the different classes of existing magnetic molecular materials, focusing on the possible synthetic strategies developed to date to assemble the molecular building blocks ranging from purely organic to inorganic materials, as well as on their physical properties and potential applications. These materials comprise inorganic and organic ferro- and ferrimagnets, high nuclearity organic molecules and magnetic and metallic clusters, spin crossover systems, charge transfer salts (including fulleride salts and organic conductors and superconductors), and organized soft media (magnetic liquid crystals and Langmuir-Blodgett films).
Book Synopsis Optical Interactions In Solids (2nd Edition) by : Di Bartolo Baldassare
Download or read book Optical Interactions In Solids (2nd Edition) written by Di Bartolo Baldassare and published by World Scientific Publishing Company. This book was released on 2010-06-30 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Interactions in Solids presents an extensive and unified treatment of the basic principles of the optical properties of solids. It provides a theoretical background to workers in the field of laser physics and absorption and fluorescence spectroscopy of solid state materials. The book is a comprehensive coverage of the subject and is systematically and didactically organized. The level of presentation is such that it will benefit and interest both advanced students and research workers. Group theory — which is useful throughout — is introduced early in the book advocating the scientific community to overcome the reluctance to employ this powerful method. Consistent emphasis is given throughout the book to the relevance of symmetry and to detailed calculations. Different subjects as various as quantum theory of radiation field, thermal vibrations of molecules and crystals and covalent bonding are brought together in a unified treatment which requires knowledge of all these topics and this points to the interpretation of the spectral properties of solids. The content of this work could be used as a two term graduate course in solid state spectroscopy.br>
Book Synopsis Electric and Magnetic Interactions in Molecules by : Harold Jerrold Kolker
Download or read book Electric and Magnetic Interactions in Molecules written by Harold Jerrold Kolker and published by . This book was released on 1963 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interactions in Magnetically Ordered Solids by : Krityunjai Prasad Sinha
Download or read book Interactions in Magnetically Ordered Solids written by Krityunjai Prasad Sinha and published by Oxford University Press, USA. This book was released on 1980 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Magnetism written by Joel S. Miller and published by . This book was released on 2001 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Chemical and Physical Dynamics of Magnetic Interactions by : Judith Kathryn Clark
Download or read book The Chemical and Physical Dynamics of Magnetic Interactions written by Judith Kathryn Clark and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The central focus of this thesis is a study of materials with competing magnetic interactions and understanding how these interactions affect the overall magnetic behavior of solids. Understanding the fundamental factors that can be used to tune the magnetic exchange interactions provides the legwork to a "materials by design" approach that may be used to target desired magnetic properties for applications related to electronics and spintronics. Specifically, this thesis will focus on the fundamental understanding of how magnetic materials behave when one or more of the following factors is considered: chemical substitution, pressure, applied magnetic field, and temperature.Chapter 1 covers the fundamentals of magnetism and examples of magnetic behaviors that demonstrate the principles that are important to this thesis. Chapter 2 covers the experimental and theoretical methods used in this work. In Chapter 3, the behavior of solid solutions La1-xCexCo2P2, with a particular focus on the representative with x = 0.3, is analyzed. The careful analysis of La0.4Ce0.6Co2P2 is particularly important to this series, as at this composition the magnetic phase boundary between ferromagnetic (FM) and antiferromagnetic (AFM) behavior occurs. The loss of magnetic ordering in this compound due to a temperature driven lattice collapse and the magnetic behavior under pressure are discussed. Additionally, a specific focus on the magnetic behavior of cerium is incorporated for a deeper understanding of the role intermediate valence of Ce plays in the magnetic properties of this series. In Chapter 4, the AFM compound MnBi2Se4 is investigated by neutron scattering and magnetic measurements. The crystal structure reveals AFM chains of Mn atoms. A relative half-translation shift of the neighbor chains results in spin frustration caused by interchain magnetic exchange. Ultimately, these spin-frustrating interactions lead to helimagnetic ordering along the chain propagation direction. To further understand the nature of magnetic exchange in MnBi2Se4, Chapters 5 and 6 focus on the simple binary monocalcogenides, MnS and MnSe. Inelastic neutron scattering (INS) is used to measure the specific magnetic exchange constants in these materials. In MnS, the INS measurements combined with theoretical investigation lead to the revelation that both superexchange and direct exchange play a significant role in the overall AFM ordering. The behavior of MnSe is inherently more complex due to the structural phase transition from cubic (NaCl) to hexagonal (NiAs) phase upon cooling. The transition is incomplete due to its very slow kinetics, which have allowed, for the first time in this system, for experimental observation of the intermediate third phase involved in this transformation. The intermediate phase was investigated by temperature-dependent X-ray diffraction and pair distribution function (PDF) measurements, and supported by INS studies. In continuation of the theme of competing magnetic interactions, Chapter 7 focuses on the magnetic behavior of systems with geometric triangular arrangements of magnetic moments of 4f ions (Ln). The lack of magnetic ordering is observed for a majority of the LnZn3P3 and YbZn2Pn2 (Pn = P, As, Sb) systems down to 1.8 K. The question arises, could the lack of magnetic ordering be caused by the frustration induced by the crystal lattice? Further studies are needed to confirm whether the lack of magnetic ordering, indeed, is caused by spin frustration. X-ray absorption near-edge structure (XANES) spectroscopy is utilized to address the oxidation state of Yb in YbZn2Pn2. Finally, Chapter 8 is dedicated to another potentially interesting system for which the magnetic behavior has not been thoroughly investigated. Er5S7 is unusual as a non-valence-precise structure. The crystal growth and magnetic behavior of Er5S7 are reported, revealing AFM ordering at low temperature. The challenges associated with determining the exact crystal and magnetic structures of this materials are discussed. Throughout this thesis, the relationship between the underlying crystal structure and competing magnetic interactions will be identified and discussed for each unique system. The broad scope of systems considered in this thesis has allowed identification of potentially interesting future research directions, which are outlined in the concluding Chapter 9.
Book Synopsis Magnetic Atoms and Molecules by : William Weltner
Download or read book Magnetic Atoms and Molecules written by William Weltner and published by Courier Corporation. This book was released on 1989-01-01 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive graduate-level text by a leading researcher in atomic and molecular spectroscopy explores the electron-spin-resonance theory of randomly oriented molecules. "I recommend it highly." ? American Scientist. 119 illustrations.
Book Synopsis π-Electron Magnetism by : Jaume Veciana
Download or read book π-Electron Magnetism written by Jaume Veciana and published by Springer. This book was released on 2003-09-04 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Celebrating Volume 100: Thirty years ago Springer-Verlag together with a distinguished Board of Editors started the series Structure and Bonding. Initially the series was set up to publish reviews from different fields of modern inorganic chemistry, chemical physics and biochemistry, where the general subject of chemical bonding involves a metal and a small number of associated atoms. Three years ago the aims of the series was refined to span the entire periodic table and address structure and bonding issues wherever they may be relevant. Not only the traditional areas of chemical bonding will be dealt with but also nanostructres, molecular electronics, supramolecular structure, surfaces and clusters. With these aims in mind it is noteworthy that Volume 100 effectively reinforces and illustrates these ideals and is titled Pi-Electron Magnetism from Molecules to Magnetic Materials.
