Author : Judith Spiegel
Publisher : Presses univ. de Louvain
Page : 179 pages
File Size : 11,49 MB
Release : 2009-11
Category : Science
ISBN : 2874631965
The growing interest in integrated microwave devices for automotive and wireless communication demands reducing device dimension by increasing bandwidth and operating frequency is a major challenge. This thesis presents the design of such devices.
Author : Aimad Saib
Publisher : Presses univ. de Louvain
Page : 196 pages
File Size : 22,57 MB
Release : 2004
Category : Science
ISBN : 9782930344775
As wireless communication systems are flourishing and operating frequencies are progressively increasing, there exists nowadays a strong demand for RF devices at millimeter wavelengths. Nonmetallic ferromagnetic materials, also called ferrites, have found wide applications in RF technology as they possess the combined properties of a magnetic material and an electrical insulator. The remarkable flexibility in tailoring the magnetic properties, the very high resistivity, price and performance considerations make ferrites the first choice materials for microwave applications. However, the frequency range of operation, the bandwidth, and the aptitude to be integrated in MMICs should be improved. In this work, a new class of magnetic materials which could overcome the main disadvantages encountered when using ferrites in RF devices operating at millimeter wavelengths is studied. This material, called magnetic nanowired substrate (MNWS), is composed of an array of ferromagnetic nanowires embedded in a polymer substrate. First, the ferromagnetic nature of nanowires yields very high saturation magnetizations, thus operating frequencies higher than 40 GHz. Next, the nanometric wire diameter allows an easy penetration of electromagnetic waves inside the MNWS. Moreover, due to the high aspect ratio of nanowires the desired magnetic properties are obtained without an external magnetic field. This leads to a considerable potential increase of the compactness and ease of integration in MMICs. Various potential applications, such as filters and circulators, of this new material are presented.
Author : Manuel Vázquez
Publisher : Woodhead Publishing
Page : 1010 pages
File Size : 50,3 MB
Release : 2020-03-31
Category : Technology & Engineering
ISBN : 0081028326
Magnetic Nano-and Microwires: Design, Synthesis, Properties and Applications, Second Edition, reviews the growth and processing of nanowires and nanowire heterostructures using such methods as sol-gel and electrodeposition, focused-electron/ion-beam-induced deposition, epitaxial growth by chemical vapor transport, and more. Other sections cover engineering nanoporous anodic alumina, discuss magnetic and transport properties, domains, domain walls in nano-and microwires. and provide updates on skyrmions, domain walls, magnetism and transport, and the latest techniques to characterize and analyze these effects. Final sections cover applications, both current and emerging, and new chapters on memory, sensor, thermoelectric and nanorobotics applications. This book will be an ideal resource for academics and industry professionals working in the disciplines of materials science, physics, chemistry, electrical and electronic engineering and nanoscience.
Author : Susheel Kalia
Publisher : Elsevier
Page : 384 pages
File Size : 30,98 MB
Release : 2024-06-18
Category : Technology & Engineering
ISBN : 0443185573
Nanostructured Hexagonal Ferrites: Novel Characteristics and Multifunctional Applications presents the latest advances in hexaferrite nanostructures, which offer reliability, stability, and efficiency in a range of advanced applications. The book begins by introducing the structure, characteristics, fabrication, processing, characterization methods, and composites of hexagonal ferrites in detail. Solid-state chemistry and magnetic, magnetoelectric, multiferroic, and dielectric properties are examined. Subsequent chapters then provide in-depth coverage of the preparation of nanohexaferrites with specific properties for target applications, in areas such as magnetic energy storage, high-frequency devices, microwave devices, stealth technologies, gyromagnetic devices, and wastewater remediation. This is a valuable resource for researchers and advanced students across nanotechnology, polymer science, composite science, chemistry, and materials science and engineering, as well as industrial scientists, engineers, and R&D professionals with an interest in hexaferrites and advanced nanostructures for advanced applications. - Introduces fabrication, characterization, processing, and preparation methods for hexagonal ferrites - Analyzes structure and properties of nanohexaferrites and their suitability in a range of applications - Opens the door to novel utilizations across electronic devices, energy storage, and wastewater remediation
Author : Bruno Azzerboni
Publisher : Springer Science & Business Media
Page : 356 pages
File Size : 42,77 MB
Release : 2007-10-22
Category : Technology & Engineering
ISBN : 1402063369
In this book, a team of outstanding scientists in the field of modern magnetic nanotechnologies illustrates the state-of-the-art in several areas of advanced magneto-electronic devices, magnetic micro-electromechanical systems and high density information storage technologies. Providing a unique source of information for the young physicist, chemist or engineer, the book also serves as a crucial reference for the expert scientist and the teacher of advanced university courses.
Author : Zbitou, Jamal
Publisher : IGI Global
Page : 574 pages
File Size : 13,1 MB
Release : 2019-09-27
Category : Technology & Engineering
ISBN : 1799801187
Technological advancements continue to enhance the field of engineering and have led to progress in branches that include electrical and mechanical engineering. These technologies have allowed for more sophisticated circuits and components while also advancing renewable energy initiatives. With increased growth in these fields, there is a need for a collection of research that details the variety of works being studied in our globalized world. The Handbook of Research on Recent Developments in Electrical and Mechanical Engineering is a pivotal reference source that discusses the latest advancements in these engineering fields. Featuring research on topics such as materials manufacturing, microwave photons, and wireless power transfer, this book is ideally designed for graduate students, researchers, engineers, manufacturing managers, and academicians seeking coverage on the works and experiences achieved in electrical and mechanical engineering.
Author : Erwann Guenin
Publisher : CRC Press
Page : 438 pages
File Size : 25,19 MB
Release : 2016-03-30
Category : Science
ISBN : 9814669431
The use of microwaves has gradually democratized itself in several scientific areas and is now a common methodology in domains as different as chemistry, protein digestion, mining, and metallurgy. Materials chemistry is one field where microwave irradiation technologies are being studied. In recent years, development of nanotechnologies has increas
Author : Manuel Vázquez
Publisher : Woodhead Publishing
Page : 847 pages
File Size : 39,95 MB
Release : 2015-05-27
Category : Technology & Engineering
ISBN : 0081001819
Magnetic nanowires and microwires are key tools in the development ofenhanced devices for information technology (memory and data processing) andsensing. Offering the combined characteristics of high density, high speed, andnon-volatility, they facilitate reliable control of the motion of magnetic domainwalls; a key requirement for the development of novel classes of logic and storagedevices. Part One introduces the design and synthesis of magnetic nanowires andmicrowires, reviewing the growth and processing of nanowires and nanowireheterostructures using such methods as sol-gel and electrodepositioncombinations, focused-electron/ion-beam-induced deposition, chemicalvapour transport, quenching and drawing and magnetic interactions. Magneticand transport properties, alongside domain walls, in nano- and microwiresare then explored in Part Two, before Part Three goes on to explore a widerange of applications for magnetic nano- and microwire devices, includingmemory, microwave and electrochemical applications, in addition to thermalspin polarization and configuration, magnetocalorific effects and Bloch pointdynamics. - Detailed coverage of multiple key techniques for the growth and processing of nanowires and microwires - Reviews the principles and difficulties involved in applying magnetic nano- and microwires to a wide range of applications - Combines the expertise of specialists from around the globe to give a broad overview of current and future trends
Author : Vincent G. Harris
Publisher : John Wiley & Sons
Page : 501 pages
File Size : 39,64 MB
Release : 2023-01-04
Category : Science
ISBN : 1118971469
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 : Jitendra Pal Singh
Publisher : Woodhead Publishing
Page : 928 pages
File Size : 12,87 MB
Release : 2023-04-28
Category : Technology & Engineering
ISBN : 012823718X
Ferrite Nanostructured Magnetic Materials: Technologies and Applications provides detailed descriptions of the physical properties of ferrite nanoparticles and thin films. Synthesis methods and their applications in numerous fields are also included. And, since characterization methods play an important role in investigating the materials' phenomena, various characterization tools applied to ferrite materials are also discussed. To meet the requirements of next-generation characterization tools in the field of ferrite research, synchrotron radiation-based spectroscopic and imaging tools are thoroughly explored.Finally, the book discusses current and emerging applications of ferrite nanostructured materials in industry, health, catalytic and environmental fields, making this comprehensive resource suitable for researchers and practitioners in the disciplines of materials science and engineering, chemistry and physics. - Reviews the fundamentals of ferrite materials, including their magnetic, electrical, dielectric and optical properties - Includes discussions on the most relevant and emerging synthesis and optimization of ferrite nanostructured materials for a diverse range of morphologies - Provides an overview of both the most relevant and emerging applications of ferrite magnetic materials in industry, health, energy and environmental remediation
