Magnetism and Magnetotransport of Magnetic Nanoparticle Arrays PDF Download
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 120
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Book Description
As the size of particles scales down to nanometer regime, the physical properties are totally different from bulk counterparts. In magnetic materials, magnetic properties show strong size dependence, originating from finite size and surface effects. In this dissertation, I show that both magnetization and magnetotransport in magnetic nanoparticles can be dominated by surface magnetic configurations. In systems with competing antiferromagnetic (AFM) exchange interaction and ferromagnetic (FM) exchange interaction, a reduction of the total saturation magnetization is accompanied by a fast drop of magnetization at low temperatures for nanoparticles. Depending on the surface termination, AFM exchange interaction may contribute stronger at the surface than inside the particle, leading to such effects. Charge transport properties in nanoparticles are determined by inter-particle distances, which can be tuned by annealing conditions. The magnetoresistance (MR) is dominated by spin dependent scattering at the nanoparticle surfaces with spin disorder, and therefore MR can be fitted perfectly by a Langevin-like function regardless of annealing temperatures.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 120
Get Book Here
Book Description
As the size of particles scales down to nanometer regime, the physical properties are totally different from bulk counterparts. In magnetic materials, magnetic properties show strong size dependence, originating from finite size and surface effects. In this dissertation, I show that both magnetization and magnetotransport in magnetic nanoparticles can be dominated by surface magnetic configurations. In systems with competing antiferromagnetic (AFM) exchange interaction and ferromagnetic (FM) exchange interaction, a reduction of the total saturation magnetization is accompanied by a fast drop of magnetization at low temperatures for nanoparticles. Depending on the surface termination, AFM exchange interaction may contribute stronger at the surface than inside the particle, leading to such effects. Charge transport properties in nanoparticles are determined by inter-particle distances, which can be tuned by annealing conditions. The magnetoresistance (MR) is dominated by spin dependent scattering at the nanoparticle surfaces with spin disorder, and therefore MR can be fitted perfectly by a Langevin-like function regardless of annealing temperatures.
Author: Davide Peddis
Publisher: Springer Nature
ISBN: 303060473X
Category : Science
Languages : en
Pages : 445
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Book Description
This book provides comprehensive coverage of the most recent progress and developments in the field of magnetic nanoparticles, with special emphasis on new materials design approaches for magnetic nanoarchitectures, advanced characterization techniques, and a wide range of applications areas including permanent magnets, biomedicine, and life sciences. The book also features an exhaustive section on fundamentals, covering single particle effects, surface effects, and interparticle interactions. The book delivers a strong focus throughout on the multidisciplinarity of the subject spanning physics, chemistry, engineering, biology, medicine, and environmental science. This forward-looking contributed volume highlights future perspectives and areas of emerging research, and will be of great interest to advanced undergraduates, as well as researchers in academia and industry.
Author: Sergey P. Gubin
Publisher: John Wiley & Sons
ISBN: 352762757X
Category : Science
Languages : en
Pages : 484
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Book Description
This interdisciplinary approach to the topic brings together reviews of the physics, chemistry, fabrication and application of magnetic nanoparticles and nanostructures within a single cover. With its discussion of the basics as well as the most recent developments, and featuring many examples of practical applications, the result is both a clear and concise introduction to the topic for beginners and a guide to relevant comprehensive physical phenomena and essential technological applications for experienced researchers.
Author: D.J. Sellmyer
Publisher: Springer Science & Business Media
ISBN: 0387233164
Category : Science
Languages : en
Pages : 514
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Book Description
Advanced magnetic nanostructures is an emerging field in magnetism and nanotechnology, but the literature consists of a rich variety of original papers and parts of reviews and books whose scope is comparatively broad. This calls for a book with specific emphasis on state-of-the-art synthetic methods for fabricating, characterizing and theoretically modeling new magnetic nanostructures. This book is intended to provide a comprehensive overview of the present state of the field. Leading researchers world-wide have contributed a survey of their special ties to guide the reader through the exploding literature in nanomagnetic structures. The focus is on deliberately structured nanomagnets. It includes cluster assembled, self-organized and patterned thin films but excludes, for example, multilayered thin films. We target both industrial and academic researchers in magnetism and related areas, such as nanotechnology, materials science, and theoretical solid-state physics.
Author: Nguyen TK Thanh
Publisher: CRC Press
ISBN: 1439869324
Category : Science
Languages : en
Pages : 613
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Book Description
Offering the latest information in magnetic nanoparticle (MNP) research, Magnetic Nanoparticles: From Fabrication to Clinical Applications provides a comprehensive review, from synthesis, characterization, and biofunctionalization to clinical applications of MNPs, including the diagnosis and treatment of cancers. This book, written by some of the most qualified experts in the field, not only fills a hole in the literature, but also bridges the gaps between all the different areas in this field. Translational research on tailored magnetic nanoparticles for biomedical applications spans a variety of disciplines, and putting together the most significant advances into a practical format is a challenging task. Balancing clinical applications with the underlying theory and foundational science behind these new discoveries, Magnetic Nanoparticles: From Fabrication to Clinical Applications supplies a toolbox of solutions and ideas for scientists in the field and for young researchers interested in magnetic nanoparticles.
Author: Roland Wiesendanger
Publisher: Springer
ISBN: 3319995588
Category : Science
Languages : en
Pages : 390
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Book Description
This book provides a comprehensive overview of the fascinating recent developments in atomic- and nanoscale magnetism, including the physics of individual magnetic adatoms and single spins, the synthesis of molecular magnets for spintronic applications, and the magnetic properties of small clusters as well as non-collinear spin textures, such as spin spirals and magnetic skyrmions in ultrathin films and nanostructures. Starting from the level of atomic-scale magnetic interactions, the book addresses the emergence of many-body states in quantum magnetism and complex spin states resulting from the competition of such interactions, both experimentally and theoretically. It also introduces novel microscopic and spectroscopic techniques to reveal the exciting physics of magnetic adatom arrays and nanostructures at ultimate spatial and temporal resolution and demonstrates their applications using various insightful examples. The book is intended for researchers and graduate students interested in recent developments of one of the most fascinating fields of condensed matter physics.
Author:
Publisher: Newnes
ISBN: 0080983553
Category : Science
Languages : en
Pages : 328
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Book Description
Nanomagnetism: Fundamentals and Applications is a complete guide to the theory and practical applications of magnetism at the nanometer scale. It covers a wide range of potential applications including materials science, medicine, and the environment. A tutorial covers the special magnetic properties of nanoscale systems in various environments, from free clusters to nanostructured materials. Subsequent chapters focus on the current state of research in theory and experiment in specific areas, and also include applications of nanoscale systems to synthesizing high-performance materials and devices. The only book on nanomagnetism to cover such a wide area of applications Includes a tutorial section that covers all the fundamental theory Serves as a comprehensive guide for people entering the field
Author: Yanglong Hou
Publisher: John Wiley & Sons
ISBN: 352734134X
Category : Science
Languages : en
Pages : 598
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Book Description
Timely and comprehensive, this book presents recent advances in magnetic nanomaterials research, covering the latest developments, including the design and preparation of magnetic nanoparticles, their physical and chemical properties as well as their applications in different fields, including biomedicine, magnetic energy storage, wave-absorbing and water remediation. By allowing researchers to get to the forefront developments related to magnetic nanomaterials in various disciplines, this is invaluable reading for the nano, magnetic, energy, medical, and environmental communities.
Author: Claude Fermon
Publisher: John Wiley & Sons
ISBN: 3527699066
Category : Science
Languages : en
Pages : 376
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Book Description
This first book to focus on the applications of nanomagnetism presents those already realized while also suggesting bold ideas for further breakthroughs. The first part is devoted to the concept of spin electronics and its use for data storage and magnetic sensing, while the second part concentrates on magnetic nanoparticles and their use in industrial environment, biological and medical applications. The third, more prospective part goes on to describe emerging applications related to spin current creation and manipulation, dynamics, spin waves and binary logic based on nano-scale magnetism. With its unique choice of topics and authors, this will appeal to academic as well as corporate researchers in a wide range of disciplines from physics via materials science to engineering, chemistry and life science.
Author: Bekir Aktas
Publisher: Springer Science & Business Media
ISBN: 3540493360
Category : Technology & Engineering
Languages : en
Pages : 208
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Book Description
This volume addresses the exciting and rapidly developing topic of ultrahigh-density magnetic data storage. It is the most advanced book on magnetic nanostructures, basics and applications. It combines modern topics in nanomagnetism with issues relating to the fabrication and characterization of magnetic nanostructures. This book will be of interest to R and D scientists and it provides an accessible introduction to the essential issues.
