Structural and Magnetic Properties of YIG Thin Films and Interfacial Origin of Magnetisation Suppression PDF Download

Author: Arpita Mitra
Publisher:
ISBN:
Category :
Languages : en
Pages : 322

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Author: Vincent G. Harris
Publisher: John Wiley & Sons
ISBN: 1118971469
Category : Science
Languages : en
Pages : 501

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Book Description
MODERN FERRITES, Volume 1 A robust exploration of the basic principles of ferrimagnetics and their applications In Modern Ferrites Volume 1: Basic Principles, Processing and Properties, renowned researcher and educator Vincent G. Harris delivers a comprehensive overview of the basic principles and ferrimagnetic phenomena of modern ferrite materials. Volume 1 explores the fundamental properties of ferrite systems, including their structure, chemistry, and magnetism; the latest in processing methodologies; and the unique properties that result. The authors explore the processing, structure, and property relationships in ferrites as nanoparticles, thin and thick films, compacts, and crystals and how these relationships are key to realizing practical device applications laying the foundation for next generation technologies. This volume also includes: Comprehensive investigation of the historical and scientific significance of ferrites upon ancient and modern societies; Neel’s expanded theory of molecular field magnetism applied to ferrimagnetic oxides together with theoretic advances in density functional theory; Nonlinear excitations in ferrite systems and their potential for device technologies; Practical discussions of nanoparticle, thin, and thick film growth techniques; Ferrite-based electronic band-gap heterostructures and metamaterials. Perfect for RF engineers and magnetitians working in the field of RF electronics, radar, communications, and spintronics as well as other emerging technologies. Modern Ferrites will earn a place on the bookshelves of engineers and scientists interested in the ever-expanding technologies reliant upon ferrite materials and new processing methodologies. Modern Ferrites Volume 2: Emerging Technologies and Applications is also available (ISBN: 9781394156139).

Author: A. Fert
Publisher: Elsevier
ISBN: 0444596690
Category : Technology & Engineering
Languages : en
Pages : 642

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Book Description
Materials Research in thin and ultrathin magnetic structures is a multidisciplinary field which heavily relies on state-of-the-art growth, characterization and theoretical approaches to build a comprehensive physical picture on how magnetic properties depend on interfacial structural issues, interlayer coupling and transport phenomena. Often in this field, the critical properties and characterization required necessitates knowledge of structural and magnetic phenomena extending over several atomic planes. Atomic controlled growth techniques are required and atomic sensitivity is needed from magnetic and structural probes. This critical knowledge is vital for device applications, providing the basis for the synergistic interactions that are predominant in this field of research. This volume is the definitive reference source for anyone interested in the latest advances and results of current experimental research in ultrathin film magnetism.

Author: A. Fert
Publisher: North Holland
ISBN: 9780444890696
Category : Science
Languages : en
Pages : 629

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Book Description
Materials Research in thin and ultrathin magnetic structures is a multidisciplinary field which heavily relies on state-of-the-art growth, characterization and theoretical approaches to build a comprehensive physical picture on how magnetic properties depend on interfacial structural issues, interlayer coupling and transport phenomena. Often in this field, the critical properties and characterization required necessitates knowledge of structural and magnetic phenomena extending over several atomic planes. Atomic controlled growth techniques are required and atomic sensitivity is needed from magnetic and structural probes. This critical knowledge is vital for device applications, providing the basis for the synergistic interactions that are predominant in this field of research. This volume is the definitive reference source for anyone interested in the latest advances and results of current experimental research in ultrathin film magnetism.

Author: Prabandha Nakarmi
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 0

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Book Description
Magnetic materials are of great importance for a wide range of applications from daily usage to industrial scale equipment. Different devices require different classes of magnetic materials based on the required magnetic properties. Magnetic properties of these materials are influenced by the microstructure of the material. Therefore, a detailed understanding of the microstructures of magnetic material and their influence on the magnetic properties are extremely crucial to optimize materials for particular applications. This dissertation provides theoretical and experimental studies of the influence of the microstructural properties of ferromagnetic materials on the dynamic magnetic properties using numerical simulations and ferromagnetic resonance experiments.A theoretical investigation of the influence of the magnetic properties of multiple constituents of a material on the presence of multiple resonances observed in magnetization dynamics studies is presented in the second chapter of this dissertation. In addition, this chapter also provides insights regarding the consequences of erroneous model assumptions on extraction of material parameters from studies of the magnetization dynamics. The understanding gained from the studies of the second chapter is used in chapter three to study the presence of two strong resonances in cobalt-based nanocomposites and its derivatives synthesized by addition of cobalt and boron. Furthermore, detailed structural and magnetic analyses of cobalt and boron added nanocomposites under the influence of annealing are presented in the third chapter of this dissertation. In chapter four, the influence of defects on the Gilbert damping in polycrystalline iron is investigated. Detailed ferromagnetic resonance studies of the polycrystalline iron samples showed a surprising insensitivity of the damping parameter to defects present in the samples at room temperature.

Author: F. Petroff
Publisher: Elsevier
ISBN: 9780444205032
Category : Science
Languages : en
Pages : 560

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Book Description
The Symposium on Magnetic Ultrathin Films, Multilayers and Surfaces, hosted by the European Materials Research Society, was held at the Palais de la Musique et des Congré in Strasbourg, France on June 4-7, 1996. Its central theme was the relationship of magnetic properties and device performance to structure at the nano and micrometer length scale. Research on the magnetism of surfaces, ultrathin films and multilayers has increased dramatically during recent years. This development was triggered by the discovery of coupling between ferromagnetic layers across nonmagnetic spacer layers and of the giant magnetoresistance effect in systems of reduced dimension using various micro and nanofabrication techniques has become a subject of special interest. It is certainly the promising application potential of these effects in new magnetic recording device geometries which causes this intensive research, which is done both by companies and at universities and research institutes. A selection of invited and contributed papers presented at the Symposium and accepted for publication is contained in this volume. The contents of these proceedings are organized into seven sections. A. Nanowires, Nanoparticles, Nanostructuring B. Ultrathin Films and Surfaces, Characterization C. Giant Magnetoresistance D. Coupling, Tunneling E. Growth, Structure, Magnetism F. Growth, Structure, Magnetoresistance G. Coupling, Magnetic processes, Magneto-optics. The first four sections contain invited and oral contributed papers in the listed research domains, while the last three sections contain the contributions presented during three large poster sessions.

Author: Gerardo Antonio Bertero
Publisher:
ISBN:
Category :
Languages : en
Pages : 352

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Author: George William Reimherr
Publisher:
ISBN:
Category : Magnetic materials
Languages : en
Pages : 64

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Book Description

Author: Matthias Wuttig
Publisher: Springer Science & Business Media
ISBN: 9783540583592
Category : Technology & Engineering
Languages : en
Pages : 400

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Book Description
This research monograph discusses the close correlation between the magnetic and structural properties of thin films in the context of numerous examples of epitaxial metal films, while emphasis is laid on the stabilization of novel structures compared to the bulk material. Further options, possibilities, and limits for applications are given. Techniques for the characterization of thin films are addressed as well.

Author: Jamileh Beik Mohammadi
Publisher:
ISBN:
Category :
Languages : en
Pages : 198

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Book Description
Theoretical and experimental research on magnetic materials and magnetic devices intend to investigate novel materials and structures which can be used for the next generation spintronic devices. Moreover, it is essential to conduct fundamental research on new phenomena aiming for new generation of devices that can be faster, smaller, cheaper, and more reliable. Magnetic anisotropies have been widely used in spintronic devices. From the unidirectional exchange bias anisotropy that is used in magnetic read heads and giant magnetic resonance (GMR) sensors, to the interfacial perpendicular magnetic anisotropy (PMA) that is essential for magnetic tunnel junctions (MTJs). In the first chapter of this dissertation a short introduction to magnetization dynamics including experimental techniques is given. In the second chapter, the exchange bias anisotropy and the interfacial origin of relaxation in Ru/IrMn/CoFe/Ru exchange biased systems is discussed and investigated. The interfacial perpendicular anisotropy is observed in these systems and can be quantified using FMR technique. Such anisotropy can exist in a thin ferromagnetic film (such as NiFe) that is in proximity to a metallic (e.g.Ru) or insulating (e.g. SiO2) non-magnetic layer, which is the topic of the third chapter of this dissertation. In addition, experimental results confirm that spatial fluctuations of the uniaxial perpendicular anisotropy can push the easy axis of the magnetization in an orientation that is neither perpendicular to the film nor normal to it. The effect of the lateral fluctuation of the uniaxial anisotropy on the magnetic energy landscape and the magnetization dynamics of thin magnetic layers is reported in chapter four using micromagnetic simulations.