Quantum Magnetic Phenomena in 0-D Through 3-D MnIII3-based Single-molecule Magnets PDF Download
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Author: Patrick Lulick Feng
Publisher:
ISBN:
Category :
Languages : en
Pages : 682
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Book Description
Single-molecule magnets (SMMs) offer a molecular approach to nanoscale magnetic materials. These molecules, below their blocking temperature, function as single-domain magnetic particles and exhibit the classical macroscale property of a magnet-magnetization hysteresis. In addition, SMMs straddle the classical/quantum interface in also displaying quantum tunnelling of magnetization (QTM) and quantum phase interference. Potential applications of SMMs include high-density information storage and qubits for quantum computing. There are numerous synthetic and technical challenges to this end, the most significant of which involves maximization of the barrier to magnetization reversal (Ueff) and understanding the factors that control QTM. To meet these goals, closely-related families of Mn'III-based complexes have been synthesized, in which the ground state spin values, uniaxial anisotropies, and magnetization reversal barriers were varied as a result of systematic changes in the coordinating ligands and co-crystallizing cations. Detailed single-crystal magnetization hysteresis and high-frequency EPR studies on these complexes provide unprecendented insight towards the mechanism and selection rules for QTM in these complexes, as applicable to all SMMs. SMMs have also been widely touted as a 'bottom-up' approach to the construction of molecular magnetic materials, though very few examples adequately demonstrate this concept. Families of higher-nuclearity Mn3III-based complexes have thus been synthesized, for which dimeric structures, infinite 1-D chains, 2-D grids, and porous 3-D frameworks have been achieved. Through systematic synthetic variations, these complexes exhibit magnetic properties that span the range from isolated SMMs, to weakly coupled SMMs, to correlated single-chain magnets (SCMs). The porous 3-D structures also possesses unique multi-functional properties such as the observation of slow magnetization relaxation and the selective adsorption of gases such as CO2 and H2.
Author: Patrick Lulick Feng
Publisher:
ISBN:
Category :
Languages : en
Pages : 682
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Book Description
Single-molecule magnets (SMMs) offer a molecular approach to nanoscale magnetic materials. These molecules, below their blocking temperature, function as single-domain magnetic particles and exhibit the classical macroscale property of a magnet-magnetization hysteresis. In addition, SMMs straddle the classical/quantum interface in also displaying quantum tunnelling of magnetization (QTM) and quantum phase interference. Potential applications of SMMs include high-density information storage and qubits for quantum computing. There are numerous synthetic and technical challenges to this end, the most significant of which involves maximization of the barrier to magnetization reversal (Ueff) and understanding the factors that control QTM. To meet these goals, closely-related families of Mn'III-based complexes have been synthesized, in which the ground state spin values, uniaxial anisotropies, and magnetization reversal barriers were varied as a result of systematic changes in the coordinating ligands and co-crystallizing cations. Detailed single-crystal magnetization hysteresis and high-frequency EPR studies on these complexes provide unprecendented insight towards the mechanism and selection rules for QTM in these complexes, as applicable to all SMMs. SMMs have also been widely touted as a 'bottom-up' approach to the construction of molecular magnetic materials, though very few examples adequately demonstrate this concept. Families of higher-nuclearity Mn3III-based complexes have thus been synthesized, for which dimeric structures, infinite 1-D chains, 2-D grids, and porous 3-D frameworks have been achieved. Through systematic synthetic variations, these complexes exhibit magnetic properties that span the range from isolated SMMs, to weakly coupled SMMs, to correlated single-chain magnets (SCMs). The porous 3-D structures also possesses unique multi-functional properties such as the observation of slow magnetization relaxation and the selective adsorption of gases such as CO2 and H2.
Author: Malgorzata Holynska
Publisher: John Wiley & Sons
ISBN: 3527343210
Category : Science
Languages : en
Pages : 448
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Book Description
Concise overview of synthesis and characterization of single molecule magnets Molecular magnetism is explored as an alternative to conventional solid-state magnetism as the basis for ultrahigh-density memory materials with extremely fast processing speeds. In particular single-molecule magnets (SMM) are in the focus of current research, both because of their intrinsic magnetization properties, as well as because of their potential use in molecular spintronic devices. SMMs are fascinating objects on the example of which one can explain many concepts. Single-Molecule Magnets: Molecular Architectures and Building Blocks for Spintronics starts with a general introduction to single-molecule magnets (SMM), which helps readers to understand the evolution of the field and its future. The following chapters deal with the current synthetic methods leading to SMMs, their magnetic properties and their characterization by methods such as high-field electron paramagnetic resonance, paramagnetic nuclear magnetic resonance, and magnetic circular dichroism. The book closes with an overview of radical-bridged SMMs, which have shown application potential as building blocks for high-density memories. Covers a hot topic – single-molecule magnetism is one of the fastest growing research fields in inorganic chemistry and materials science Provides researchers and newcomers to the field with a solid foundation for their further work Single-Molecule Magnets: Molecular Architectures and Building Blocks for Spintronics will appeal to inorganic chemists, materials scientists, molecular physicists, and electronics engineers interested in the rapidly growing field of study.
Author: Jinkui Tang
Publisher: Springer
ISBN: 3662469995
Category : Science
Languages : en
Pages : 219
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Book Description
This book begins by providing basic information on single-molecule magnets (SMMs), covering the magnetism of lanthanide, the characterization and relaxation dynamics of SMMs and advanced means of studying lanthanide SMMs. It then systematically introduces lanthanide SMMs ranging from mononuclear and dinuclear to polynuclear complexes, classifying them and highlighting those SMMs with high barrier and blocking temperatures – an approach that provides some very valuable indicators for the structural features needed to optimize the contribution of an Ising type spin to a molecular magnet. The final chapter presents some of the newest developments in the lanthanide SMM field, such as the design of multifunctional and stimuli-responsive magnetic materials as well as the anchoring and organization of the SMMs on surfaces. In addition, the crystal structure and magnetic data are clearly presented with a wealth of illustrations in each chapter, helping newcomers and experts alike to better grasp ongoing trends and explore new directions. Jinkui Tang is a professor at Changchun Institute of Applied Chemistry, Chinese Academy of Sciences. Peng Zhang is currently pursuing his PhD at Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, with a specific focus on the molecular magnetism of lanthanide compounds under the supervision of Prof. Jinkui Tang.
Author: Putz, Mihai V.
Publisher: IGI Global
ISBN: 1522504931
Category : Technology & Engineering
Languages : en
Pages : 794
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Book Description
Global economic demands and population surges have led to dwindling resources and problematic environmental issues. As the climate and its natural resources continue to struggle, it has become necessary to research and employ new forms of sustainable technology to help meet the growing demand. Sustainable Nanosystems Development, Properties, and Applications features emergent research and theoretical concepts in the areas of nanotechnology, photovoltaics, electrochemistry, and materials science, as well as within the physical and environmental sciences. Highlighting progressive approaches and utilization techniques, this publication is a critical reference source for researchers, engineers, students, scientists, and academicians interested in the application of sustainable nanotechnology.
Author: Yongbing Xu
Publisher: Springer
ISBN: 9789400768918
Category : Science
Languages : en
Pages : 0
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Book Description
Over two volumes and 1500 pages, the Handbook of Spintronics will cover all aspects of spintronics science and technology, including fundamental physics, materials properties and processing, established and emerging device technology and applications. Comprising 60 chapters from a large international team of leading researchers across academia and industry, the Handbook provides readers with an up-to-date and comprehensive review of this dynamic field of research. The opening chapters focus on the fundamental physical principles of spintronics in metals and semiconductors, including an introduction to spin quantum computing. Materials systems are then considered, with sections on metallic thin films and multilayers, magnetic tunnelling structures, hybrids, magnetic semiconductors and molecular spintronic materials. A separate section reviews the various characterisation methods appropriate to spintronics materials, including STM, spin-polarised photoemission, x-ray diffraction techniques and spin-polarised SEM. The third part of the Handbook contains chapters on the state of the art in device technology and applications, including spin valves, GMR and MTJ devices, MRAM technology, spin transistors and spin logic devices, spin torque devices, spin pumping and spin dynamics and other topics such as spin caloritronics. Each chapter considers the challenges faced by researchers in that area and contains some indications of the direction that future work in the field is likely to take. This reference work will be an essential and long-standing resource for the spintronics community.
Author: Dante Gatteschi
Publisher: OUP Oxford
ISBN: 0191620858
Category : Science
Languages : en
Pages : 416
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Book Description
Nanomagnetism is a rapidly expanding area of research which appears to be able to provide novel applications. Magnetic molecules are at the very bottom of the possible size of nanomagnets and they provide a unique opportunity to observe the coexistence of classical and quantum properties. The discovery in the early 90's that a cluster comprising twelve manganese ions shows hysteresis of molecular origin, and later proved evidence of quantum effects, opened a new research area which is still flourishing through the collaboration of chemists and physicists. This book is the first attempt to cover in detail the new area of molecular nanomagnetism, for which no other book is available. In fact research and review articles, and book chapters are the only tools available for newcomers and the experts in the field. It is written by the chemists originators and by a theorist who has been one of the protagonists of the development of the field, and is explicitly addressed to an audience of chemists and physicists, aiming to use a language suitable for the two communities.
Author: Rong Cao
Publisher: John Wiley & Sons
ISBN: 3527349006
Category : Science
Languages : en
Pages : 1088
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Book Description
Advanced Structural Chemistry Discover the relationships between inorganic chemical synthesis, structure, and property with these comprehensive and insightful volumes Advanced Structural Chemistry: Tailoring Properties of Inorganic Materials and their Applications (3 Volume Set) offers readers the opportunity to discover the relationship between the structure and function of matter, develop efficient and precise synthesis methodology, and to understand the theoretical tools for new functional substances. Advanced Structural Chemistry clarifies the relationships between synthesis and structure, as well as structure and property, both of which are central to the creation of new materials with unique functions. In addition to subjects like the syntheses of metal-oxide clusters, metal-organic cages, and metal-organic frameworks with tailored optical, electric, ferroelectric, magnetic, adsorption, separation, and catalytic properties, the accomplished editor Rong Cao provides readers with information on a wide variety of topics, such as: Coordination-assembled metal-organic macrocycles and cages, including metallacycles and metallacages The structural chemistry of metal-oxo clusters, including the oxo clusters of transition metal, main group metal, and lanthanides Synthetic approaches, structural diversities, and biological aspects of molybdenum-based heterometallic sulfide clusters and coordination polymers Group 11-15 metal chalcogenides, including discrete chalcogenide clusters synthesized in ionic liquids The structures of metal-organic frameworks, including one-, two-, and three-dimensional MOFs Perfect for inorganic chemists, structural chemists, solid state chemists, material scientists, and solid state physicists, Advanced Structural Chemistry also belongs on the bookshelves of catalytic and industrial chemists who seek to improve their understanding of the structure and functions of inorganic materials.
Author: Olivier Kahn
Publisher: Courier Dover Publications
ISBN: 0486837424
Category : Science
Languages : en
Pages : 419
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Book Description
Highly regarded and historic book covers basic concepts of magnetization and magnetic susceptibility, establishes the fundamental equations of molecular magnetism, and examines molecules containing a unique magnetic center. 2019 edition.
Author: Joel S. Miller
Publisher: John Wiley & Sons
ISBN: 3527604502
Category : Science
Languages : en
Pages : 395
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Book Description
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.
Author: Natalia Domracheva
Publisher: Elsevier
ISBN: 0128135956
Category : Technology & Engineering
Languages : en
Pages : 490
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Book Description
Novel Magnetic Nanostructures: Unique Properties and Applications reviews the synthesis, design, characterization and unique properties of emerging nanostructured magnetic materials. It discusses the most promising and relevant applications, including data storage, spintronics and biomedical applications. Properties investigated include electronic, self-assembling, multifunctional, and magnetic properties, along with magnetic phenomena. Structures range from magnetic nanoclusters, nanoparticles, and nanowires, to multilayers and self-assembling nanosystems. This book provides a better understanding of the static and dynamic magnetism in new nanostructures for important applications. Provides an overview of the latest research on novel magnetic nanostructures, including molecular nanomagnets, metallacrown magnetic nanostructures, magnetic dendrimers, self-assembling magnetic structures, multifunctional nanostructures, and much more Reviews the synthesis, design, characterization and detection of useful properties in new magnetic nanostructures Highlights the most relevant applications, including spintronic, data storage and biomedical applications