Hysteresis In Magnetism

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Author: Giorgio Bertotti
Publisher: Gulf Professional Publishing
ISBN: 9780120932702
Size: 17.66 MB
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Hysteresis In Magnetism by Giorgio Bertotti

Original Title: Hysteresis In Magnetism

Introduction: Magnetic Hysteresis. Types of Hysteresis. Maxwells Equations and Thermodynamics: Maxwells Equations in Magnetic Media. Magnetic Work and Thermodynamics. Magnetic Free Energy: Exchange and Anisotropy. Micromagnetics. Magnetic Domains and Domain Walls. The Magnetization Process: Coherent Rotation. Domain Wall Motion. Magnetization Curves. Coercivity Mechanisms. Eddy Currents. Preisach Systems: Collections of Bistable Units. Hysteresis in Preisach Systems. Appendixes: Systems of Units. Vector Relations. Reciprocity Theorems. Micromagnetic Parameters. Stochastic Processes. Bibliography. Index.

Magnetic Hysteresis

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Author: Edward Della Torre
Publisher: Wiley-IEEE Press
ISBN: 9780780347199
Size: 64.18 MB
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Magnetic Hysteresis by Edward Della Torre

Original Title: Magnetic Hysteresis

Understanding magnetic hysteresis is vitally important to the development of the science of magnetism as a whole and to the advancement of practical magnetic device applications. Magnetic Hysteresis, by acclaimed expert Edward Della Torre, presents a clear explanation of the connection between physical principles and phenomenological hysteresis. This comprehensive book offers a lucid analysis that enables the reader to save valuable time by reducing trial-and-error design. Dr. Della Torre uses physical principles to modify Preisach modeling and to describe the complex behavior of magnetic media. While Pretsach modeling is a useful mathematical tool, its congruency and deletion properties present limitations to accurate descriptions of magnetic materials. Step-by-step, this book describes the modifications that can overcome these limitations. Special attention is given to the use of feedback around a Preisach transducer to remove the congruency restriction, and to the use of accommodation and aftereffect models to remove the deletion restriction. Magnetic state selection rules are introduced to couple scalar Preisach models to form a vector model. Magnetic Hysteresis is indispensable reading for engineers, physicists, and materials scientists who want to gain a better understanding of hysteresis losses and create more energy-efficient motor designs.

Magnetic Hysteresis In Novel Magnetic Materials

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Author: G.C. Hadjipanayis
Publisher: Springer Science & Business Media
ISBN: 9401154783
Size: 10.61 MB
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Magnetic Hysteresis In Novel Magnetic Materials by G.C. Hadjipanayis

Original Title: Magnetic Hysteresis In Novel Magnetic Materials

A detailed presentation of the physics of the various hysteresis models that are currently used to explain the magnetization reversal process, including coherent and incoherent magnetization processes, micromagnetism and its application in thin films, multilayers, nanowires, particles and bulk magnets, domain wall pinning and domain wall dynamics, and Preisach modelling. Some of the faulty concepts and interpretations that still exist in the literature are rectified. Magnetic imaging techniques are reviewed, including TEM, SEM, magnetic force microscopy, and optical microscopy. Temperature, field and angular dependence of coercivity, magnetic interactions and magnetic phenomena are reviewed and their effect on magnetic hysteresis is discussed. The magnetic properties of novel materials are discussed, including nanoparticles, nanocrystalline granular solids, particulate media, thin films, and bulk magnets. Finally, present and future applications of novel materials are presented, including magnetic and magneto-optic recording media, magneto-electronics, sensors, magnetic circuit design, and novel structures created from rigid, high-energy permanent magnets.

The Science Of Hysteresis

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Author: Giorgio Bertotti
Publisher: Elsevier
ISBN: 9780080540788
Size: 22.23 MB
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The Science Of Hysteresis by Giorgio Bertotti

Original Title: The Science Of Hysteresis

Volume 1 covers: * Mathematical models * Differential equations * Stochastic aspects of hysteresis * Binary detection using hysteresis * Models of unemployment in economics Volume 2 covers: * Physical models of magnetic hysteresis * All aspects of magnetisation dynamics Volume 3 covers: * Hysteresis phenomena in materials * Over 2100 pages, rich with supporting illustrations, figures and equations * Contains contributions from an international list of authors, from a wide-range of disciplines * Covers all aspects of hysteresis - from differential equations, and binary detection, to models of unemployment and magnetisation dynamics

Lectures On Electrical Engineering

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Author: Charles Proteus Steinmetz
Publisher: Courier Corporation
ISBN: 9780486495385
Size: 20.69 MB
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Lectures On Electrical Engineering by Charles Proteus Steinmetz

Original Title: Lectures On Electrical Engineering

Third in a three-volume work by the foremost pioneer in electrical engineering techniques explores periodic transients, transients in space, transients in time and space, and variation of circuit constants. 1915-20 editions.

Environmental Magnetism

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Author: Michael Edwin Evans
Publisher: Academic Press
ISBN: 9780122438516
Size: 45.34 MB
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Environmental Magnetism by Michael Edwin Evans

Original Title: Environmental Magnetism

Magnetism is important in environmental studies for several reasons, the two most fundamental being that most substances exhibit some form of magnetic behavior, and that iron is one of the most common elements in the Earth's crust. Once sequestered in a suitable material, magnetic particles constitute a natural archive of conditions existing in former times. Magnetism provides a tracer of paleo-climatic and paleo-environmental conditions and processes. Environmental Magnetism details the occurrence and uses of magnetic materials in the natural environment. The first half of the volume describes the basic principles. The second half discusses the applications of magnetic measurements in various environmental settings on land, in lakes, in the ocean, and even various biological organisms. * Material is broadly applicable to environmental studies * Case histories illustrate key points * Extensive bibliography makes further research quick and easy

Text Book Of Magnetism

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Publisher: Discovery Publishing House
ISBN: 9788183560672
Size: 21.21 MB
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Text Book Of Magnetism by

Original Title: Text Book Of Magnetism

There are number of books on Magnetism in the market for the use of degree students in various universities in India. It is the experience of author that the average students need the treatment of theory in a way that should be easily comprehensible to him. Therefore an effort has been made in this book to put the matter in a very lucid and simple way to that even a begineer has no difficulty in grasping the subject. Each chapter of this book contains complete theory and fairly large number of solved examples sufficient problems have also been selected from various universities paper. Contents: Maxwell s Equations and Electromagnetic Theory, Circuit Analysis, Transformers and A.C. Bridges, Magnetic Properties of Matter, Magnetism.

Introduction To Magnetism And Magnetic Materials Third Edition

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Author: David Jiles
Publisher: CRC Press
ISBN: 1482238888
Size: 60.62 MB
Format: PDF
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Introduction To Magnetism And Magnetic Materials Third Edition by David Jiles

Original Title: Introduction To Magnetism And Magnetic Materials Third Edition

A long overdue update, this edition of Introduction to Magnetism and Magnetic Materials is a complete revision of its predecessor. While it provides relatively minor updates to the first two sections, the third section contains vast updates to reflect the enormous progress made in applications in the past 15 years, particularly in magnetic recording. The book includes significant updates to soft magnetic materials, hard magnetic materials, magnetic data storage, and magnetic evaluation of materials. It also adds new information on magneto-transport, small particles, nanomagnetism, magnetic semiconductors, spintronics, and high-frequency magnetism. See What’s New in the Third Edition New coverage of applications of magnetism and magnetic materials, especially in magnetic recording Additional exercises with complete worked-out solutions at the end of the book Updated references at the end of each chapter The book adopts an unusual but effectively focused question-answer framework. Each major head is introduced by a question followed by an attempt to answer. This approach maintains attention to the subject matter at hand and clarifies the objective of each section without needless digression. Each chapter also features updated and new exercise problems, accompanied by a solutions manual at the back of the book. This edition gives you an excellent introduction to the key and current theories, practices, and applications of magnetics and magnetic materials.

Magnetic Circuits And Transformers

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Author: U.A.Bakshi
Publisher: Technical Publications
ISBN: 9788184314458
Size: 58.63 MB
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Magnetic Circuits And Transformers by U.A.Bakshi

Original Title: Magnetic Circuits And Transformers

Electromagnetism Review of electromagnetism, Magnetic field strength, Magnetic force.Magnetic Circuits Magnetomotive force, Reluctance, Laws of magnetic circuits, Determination of ampere-turns for series and parallel magnetic circuits, Magnetic leakage and fringing, Hysteresis and eddy current losses. Electromagnetic Induction Faraday s laws, Lenz s law, Statically and dynamically induced E.M.F., Energy stored in magnetic field. Transformers Introduction, Principle of working, Construction of single phase transformer, E.M.F. equation, Phasor diagram on no load, Leakage reactance, Transformer on load, Equivalent circuit, Voltage regulation, Power and energy efficiency, Open circuit and short circuit tests, Equivalent circuit parameters estimation. Effect of saturation on exciting current, In-rush current phenomenon.Parallel operation of single phase transformer. Autotransformer Principle of operation, Comparison with two winding transformers.Three Phase Transformers Different winding connections, Voltage and current ratios, Comparative features, Effect of connections on exciting current, Parallel operation. Three winding transformer-Equivalent circuit, Off-load and on-load tap changing transformer, Scott connections.

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