Applied Magnetism

Applied Magnetism

This book is based on the contributions to a course, entitled Applied Magnetism, which was the 25th Course of the International School of Materials Science and Technology.

Author: R. Gerber

Publisher: Springer Science & Business Media

ISBN: 9789401582636

Category: Science

Page: 592

View: 237

This book is based on the contributions to a course, entitled Applied Magnetism, which was the 25th Course of the International School of Materials Science and Technology. The Course was held as a NATO Advanced Study Institute at the Ettore Majorana Centre in Erice, Sicily, Italy between the 1st and 12th July 1992, and attracted almost 70 participants from 15 different countries. The book deals with the theory, experiments and applications of the main topical areas of applied magnetism. These selected areas include the physics of magnetic recording, magnetic and magneto-optic recording devices, systems and media, magnetic fine particles, magnetic separation, domains and domain walls in soft magnetic materials, permanent magnets, magnetoresistance, thin film magneto-optics, and finally, microwave, optical and computational magnetics. The material is organised into I 0 self-contained chapters which together provide a comprehensive coverage of the subject of applied magnetism. The aim is to emphasise the connection between the fundamental theoretical concepts, key experiments and the important technological developments which have been achieved in this field up to the present time. Moreover, when and where possible, pointers to future trends are indicated which hopefully, together with the background material, will promote further advancement of research. The organizing committee would like to acknowledge the sponsorship of the NATO Scientific Affairs Division, the National Science Foundation of the USA, the Science and Engineering Research Council of the UK, the Italian Ministry of Education, the Italian Ministry of University and Scientific Research and the Sicilian Regional Government.
Categories: Science

M ssbauer Spectroscopy Applied to Magnetism and Materials Science

M  ssbauer Spectroscopy Applied to Magnetism and Materials Science

Various applications of Mossbauer spectroscopy to magnetic materials are discussed in the first six chapters of this volume.

Author: G.J Long

Publisher: Springer Science & Business Media

ISBN: 9781489924094

Category: Science

Page: 479

View: 989

During the past 30 years materials science has developed into a full-fledged field for basic and applied scientific enquiry. Indeed, materials scientists have devoted their efforts to creating new materials with improved electronic, magnetic, thermal, mechanical, and optical properties. Often unnoticed, these new materials are rapidly invading our homes and automobiles, and may be found in our utensils, electronic equipment, textiles, home appliances, and electric motors. Even though they may go unnoticed, these new materials have either improved the efficiency and lifetime of these items or have reduced their weight or cost. In particular, magnetically ordered materials are useful in various applications, such as motors, magnetic imaging, magnetic recording, and magnetic levitation. Hence, much effort has been devoted to the development of better hard magnetic materials, magnetic thin films, and molecular magnets. During the same period of time, Mossbauer-effect spectroscopy has grown from a laboratory curiosity to a mature spectroscopic technique, a technique that probes solid-state materials at specific atomic sites and yields microscopic information on the magnetic and electronic properties of these materials. Iron-57 is the most commonly and easily used Mossbauer-effect isotope and, of course, is particularly relevant for the study of magnetic materials. Various applications of Mossbauer spectroscopy to magnetic materials are discussed in the first six chapters of this volume. Other isotopes such as zinc-67 and gadolinium-ISS have recently been used to study the electronic properties of zinc compounds and the electronic and magnetic properties of rare-earth transition metal compounds.
Categories: Science

M ssbauer Spectroscopy Applied to Magnetism and Materials Science

M  ssbauer Spectroscopy Applied to Magnetism and Materials Science

The in-field Mössbauer spectroscopy, with applied magnetic fields larger than about 7T, has a potential for making a significant impact in structural ...

Author: G.J Long

Publisher: Springer Science & Business Media

ISBN: 9781489917638

Category: Science

Page: 361

View: 373

This book represents Volume 2 in a series on the use of Mossbauer spectroscopy in the study of magnetism and materials. However, the perceptive reader will notice some differences from Volume 1. Specifically, in order to market the book at a more affordable price for most universities and research laboratories, the book has been prepared in camera ready format The editors and the authors agreed to do this because there is a demand for such a book in the Mossbauer community. This format has placed an extra burden on the editors and the authors and we hope we have overcome all the difficulties generated by the transfer of files between different computers. In order to make the book more attractive to materials scientists who are not experts in Mossbauer spectroscopy, this volume is particularly oriented towards the study of materials by Mossbauer spectroscopy and related complementary techniques, such as neutron scattering and a variety of surface scattering techniques. The authors of this volume can be proud of the high quality professional effort they have devoted to clearly presenting their specific topics. As a result we very much enjoyed working with the authors on this volume. We hope that their effort will help to educate the next generation of Mossbauer effect spectroscopists, a generation which will face the challenge of maintaining equally high scientific and professional standards in their research work.
Categories: Science

Applied Magnetism

Applied Magnetism

Author: Thomas Frederick Wall

Publisher:

ISBN: UCAL:$B98600

Category: Magnetism

Page: 254

View: 546

Categories: Magnetism

Applied Magnetism

Applied Magnetism

Ferromagnetism A phenomenon by which the magnetic moments of
neighbouring atoms due to mutual interaction are held in approximately parallel
... When an external magnetic field is applied the resultant moments of domains
tend to align .

Author: Eigil Olsen

Publisher:

ISBN: UCAL:B4337094

Category: Electric currents, Alternating

Page: 144

View: 398

Categories: Electric currents, Alternating

Magnetism in Condensed Matter

Magnetism in Condensed Matter

A small magnetic field B is applied perpendicular to the magnetization direction of the sublattices, causing the magnetization of both sublattices to tilt ...

Author: Stephen Blundell

Publisher: OUP Oxford

ISBN: 9780198505921

Category: Science

Page: 272

View: 953

The superb book describes the modern theory of the magnetic properties of solids. Starting from fundamental principles, this copiously illustrated volume outlines the theory of magnetic behaviour, describes experimental techniques, and discusses current research topics. The book is intended for final year undergraduate students and graduate students in the physical sciences.
Categories: Science

Fundamentals of Magnetism

Fundamentals of Magnetism

The center of the hysteresis loop is shifted from zero applied magnetic ... There are three different fields used to characterize the bias: the left and ...

Author: Mathias Getzlaff

Publisher: Springer Science & Business Media

ISBN: 9783540311522

Category: Science

Page: 388

View: 879

The first part of this state-of-the-art book conveys the fundamentals of magnetism for atoms and bulk-like solid-state systems, providing a basis for understanding new phenomena which exclusively occur in low-dimensional systems as the giant magneto resistance. This wide field is discussed in the second part. Suitable for graduate students in physical and materials sciences, the book includes numerous examples, exercises, and references.
Categories: Science

Magnetism

Magnetism

The most common way of classifying magnetic properties of materials is by their response to an applied magnetic field; therefore, both relative permeability ...

Author: Carmen-Gabriela Stefanita

Publisher: Springer Science & Business Media

ISBN: 9783642229770

Category: Science

Page: 336

View: 473

This textbook is aimed at engineering students who are likely to come across magnetics applications in their professional practice. Whether designing lithography equipment containing ferromagnetic brushes, or detecting defects in aeronautics, some basic knowledge of 21st century magnetism is needed. From the magnetic tape on the pocket credit card to the read head in a personal computer, people run into magnetism in many products. Furthermore, in a variety of disciplines tools of the trade exploit magnetic principles, and many interdisciplinary laboratory research areas cross paths with magnetic phenomena that may seem mysterious to the untrained mind. Therefore, this course offers a broad coverage of magnetism topics encountered more often in this millenium, revealing key concepts on which many practical applications rest. Some traditional subjects in magnetism are discussed in the first half of the book, followed by areas likely to spark the curiosity of those more interested in today’s technological achievements. Although sometimes some aspects may seem difficult to comprehend at first, bibliography directs the reader to appropriate further study. Throughout the chapters, the student is encouraged to discover the not-so-obvious associations between different magnetics topics, a task that will prove to be at the very least rewarding.
Categories: Science

Magnetism

Magnetism

10.3.4 Possible Field - dependent Reaction Mechanisms There is as yet no consensus in the literature regarding the mechanism by which an applied magnetic ...

Author: Joel S. Miller

Publisher: John Wiley & Sons

ISBN: 3527304290

Category: Science

Page: 485

View: 658

Reflecting contemporary knowledge, this open series of volumes provides a much-needed comprehensive overview of this growing interdisciplinary field. Topical reviews written by foremost scientists explain the trends and latest advances in a clear and detailed way. By maintaining the balance between theory and experiment, the book provides a guide for both advanced students and specialists to this research area. It will help evaluate their own experimental observations and serve as a basis for the design.
Categories: Science

Magnetism of Surfaces Interfaces and Nanoscale Materials

Magnetism of Surfaces  Interfaces  and Nanoscale Materials

The second method uses a constant frequency and sweeps the magnetic field, ... Frequency scans in a constant applied field are very fast and a convenient ...

Author: Robert E. Camley

Publisher: Elsevier

ISBN: 9780444626394

Category: Science

Page: 476

View: 186

In the past 30 years, magnetic research has been dominated by the question of how surfaces and interfaces influence the magnetic and transport properties of nanostructures, thin films and multilayers. The research has been particularly important in the magnetic recording industry where the giant magnetoresistance effect led to a new generation of storage devices including hand-held memories such as those found in the ipod. More recently, transfer of spin angular momentum across interfaces has opened a new field for high frequency applications. This book gives a comprehensive view of research at the forefront of these fields. The frontier is expanding through dynamic exchange between theory and experiment. Contributions have been chosen to reflect this, giving the reader a unified overview of the topic. Addresses both theory and experiment that are vital for gaining an essential understanding of topics at the interface between magnetism and materials science Chapters written by experts provide great insights into complex material Discusses fundamental background material and state-of-the-art applications, serving as an indispensable guide for students and professionals at all levels of expertise Stresses interdisciplinary aspects of the field, including physics, chemistry, nanocharacterization, and materials science Combines basic materials with applications, thus widening the scope of the book and its readership
Categories: Science

Magnetism

Magnetism

Definition of the main features of the magnetization curve (MC), that is the dependence of the sample magnetization M on the applied field H. The ...

Author: Joachim Stöhr

Publisher: Springer Science & Business Media

ISBN: 9783540302834

Category: Science

Page: 822

View: 186

This text book gives a comprehensive account of magnetism, one of the oldest yet most vibrant fields of physics. It spans the historical development, the physical foundations and the continuing research underlying the subject. The book covers both the classical and quantum mechanical aspects of magnetism and novel experimental techniques. Perhaps uniquely, it discusses spin transport and magnetization dynamics phenomena associated with atomically and spin engineered nano-structures against the backdrop of spintronics and magnetic storage and memory applications. The book is for students, and serves as a reference for scientists in academia and research laboratories.
Categories: Science

Introduction to Frustrated Magnetism

Introduction to Frustrated Magnetism

Ramirez et al. also observed additional phase transitions, induced in applied magnetic fields, which were later confirmed by single crystal specific heat ...

Author: Claudine Lacroix

Publisher: Springer Science & Business Media

ISBN: 3642105890

Category: Science

Page: 682

View: 398

The field of highly frustrated magnetism has developed considerably and expanded over the last 15 years. Issuing from canonical geometric frustration of interactions, it now extends over other aspects with many degrees of freedom such as magneto-elastic couplings, orbital degrees of freedom, dilution effects, and electron doping. Its is thus shown here that the concept of frustration impacts on many other fields in physics than magnetism. This book represents a state-of-the-art review aimed at a broad audience with tutorial chapters and more topical ones, encompassing solid-state chemistry, experimental and theoretical physics.
Categories: Science

Magnetism and Spintronics in Carbon and Carbon Nanostructured Materials

Magnetism and Spintronics in Carbon and Carbon Nanostructured Materials

Under the applied magnetic field the probability of the alignment of the magnetic polaron increases; hence, the bare binding energy decreases.

Author: Sekhar Chandra Ray

Publisher: Elsevier

ISBN: 9780128176818

Category: Technology & Engineering

Page: 240

View: 444

Magnetism and Spintronics in Carbon and Carbon Nanostructured Materials offers coverage of electronic structure, magnetic properties and their spin injection, and the transport properties of DLC, graphene, graphene oxide, carbon nanotubes, fullerenes, and their different composite materials. This book is a valuable resource for those doing research or working with carbon and carbon-related nanostructured materials for electronic and magnetic devices. Carbon-based nanomaterials are promising for spintronic applications because their weak spin-orbit (SO) coupling and hyperfine interaction in carbon atoms entail exceptionally long spin diffusion lengths (~100μm) in carbon nanotubes and graphene. The exceptional electronic and transport features of carbon nanomaterials could be exploited to build multifunctional spintronic devices. However, a large spin diffusion length comes at the price of small SO coupling, which limits the possibility of manipulating electrons via an external applied field. Assesses the relative utility of a variety of carbon-based nanomaterials for spintronics applications Analyzes the specific properties that make carbon and carbon nanostructured materials optimal for spintronics and magnetic applications Discusses the major challenges to using carbon nanostructured materials as magnetic agents on a mass scale
Categories: Technology & Engineering

Rock and Mineral Magnetism

Rock and Mineral Magnetism

The spin vector (and magnetic moment of an ion) is space quantized, i.e. can be considered as taking up only certain orientations to the applied field.

Author: W. O'Reilly

Publisher: Springer Science & Business Media

ISBN: 9781468484687

Category: Science

Page: 220

View: 863

The past two decades have witnessed a revolution in the earth sciences. The quantitative, instrument-based measurements and physical models of. geophysics, together with advances in technology, have radically transformed the way in which the Earth, and especially its crust, is described. The study of the magnetism of the rocks of the Earth's crust has played a major part in this transformation. Rocks, or more specifically their constituent magnetic minerals, can be regarded as a measuring instrument provided by nature, which can be employed in the service of the earth sciences. Thus magnetic minerals are a recording magnetometer; a goniometer or protractor, recording the directions of flows, fields and forces; a clock; a recording thermometer; a position recorder; astrain gauge; an instrument for geo logical surveying; a tracer in climatology and hydrology; a tool in petrology. No instrument is linear, or free from noise and systematic errors, and the performance of nature's instrument must be assessed and certified. This has been the task of the research worker in rock and mineral magnetism.
Categories: Science

Introduction to Magnetism and Magnetic Materials

Introduction to Magnetism and Magnetic Materials

However, when a magnetic material is subjected to a change in the applied magnetic field, there are time-dependent effects to consider, as the magnetic ...

Author: David Jiles

Publisher: CRC Press

ISBN: 9781482238907

Category: Science

Page: 626

View: 228

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 recordin
Categories: Science

Electricity Magnetism and Light

Electricity  Magnetism  and Light

As discussed in Section 9.5 and Figure 9.13(a), a perfect diamagnet in a static applied magnetic field produces its own magnetic field that, ...

Author: Wayne M. Saslow

Publisher: Elsevier

ISBN: 9780080505213

Category: Science

Page: 800

View: 260

A very comprehensive introduction to electricity, magnetism and optics ranging from the interesting and useful history of the science, to connections with current real-world phenomena in science, engineering and biology, to common sense advice and insight on the intuitive understanding of electrical and magnetic phenomena. This is a fun book to read, heavy on relevance, with practical examples, such as sections on motors and generators, as well as `take-home experiments' to bring home the key concepts. Slightly more advanced than standard freshman texts for calculus-based engineering physics courses with the mathematics worked out clearly and concisely. Helpful diagrams accompany the discussion. The emphasis is on intuitive physics, graphical visualization, and mathematical implementation. Electricity, Magnetism, and Light is an engaging introductory treatment of electromagnetism and optics for second semester physics and engineering majors. Focuses on conceptual understanding, with an emphasis on relevance and historical development. Mathematics is specific and avoids unnecessary technical development. Emphasis on physical concepts, analyzing the electromagnetic aspects of many everyday phenomena, and guiding readers carefully through mathematical derivations. Provides a wealth of interesting information, from the history of the science of electricity and magnetism, to connections with real world phenomena in science, engineering, and biology, to common sense advice and insight on the intuitive understanding of electrical and magnetic phenomena
Categories: Science

Magnetism and Ligand Field Analysis

Magnetism and Ligand Field Analysis

Even a crystal of cubic symmetry , which is necessarily of isotropic material , can suffer a torque in a uniform applied magnetic field .

Author: M. Gerloch

Publisher: CUP Archive

ISBN: 0521249392

Category: Science

Page: 593

View: 361

In this book, a synthesis of old and new notions straddling the disciplines of physics and chemistry is described.
Categories: Science

Magnetism

Magnetism

Permanent flux sources are used for very diverse applications. Here we name just a few: • Constant field sources for nuclear magnetic resonance imaging (MRI ...

Author: Etienne du Trémolet de Lacheisserie

Publisher: Springer Science & Business Media

ISBN: 9781461511298

Category: Science

Page: 518

View: 600

This book deals with the basic phenomena that govern the magnetic properties of matter, with magnetic materials and with the applications of magnetism in science, technology and medicine. It is the collective work of twenty-one scientists, most of them from Laboratoire Louis Neel du CNRS in Grenoble, France. The original version, in French, was edited by Etienne du Trémolet de Lacheisserie, and published in 1999. The present version involves, beyond the translation, many corrections and complements.
Categories: Science

High Field Magnetism

High Field Magnetism

1 I l 1 l 20 l,0 60 80 APPLIED MAGNETIC FIELD, Happ (k0e) Fig. 1. SPD signals for several temperatures for the compound (Ero Dyn ),Fe), B. The arrows ...

Author: F. Herlach

Publisher: Elsevier

ISBN: 9781483258829

Category: Science

Page: 480

View: 264

High Field Magnetism covers the proceedings of the 2nd International Symposium on High Field Magnetism held in Leuven, Belgium on July 20-23, 1988. The book focuses on magnetism, superconductivity, superconductors, and magnetic properties. The selection first offers information on DC laboratory electromagnets and design of magnet coils for semi-continuous magnetic fields. Discussions focus on resistive and hybrid magnets, power, stress, and homogeneity of the field. The book then examines production of ultra-high magnetic fields and their application to solid state physics; laboratory facility for the magnetic flux compression systems using large explosives; and production of repeating pulsed high magnetic field. The book takes a look at an electronic monitoring system for hybrid magnets; non-destructive quasi-static pulsed magnetic fields at Toulouse; and high field laboratory for superconducting materials at the Institute for Materials Research at Tohoku University. The manuscript then ponders on high magnetic field facility at Osaka University; advances in high field magnetism at Osaka; and status and prospects of superconducting Chevrel phase wires for high magnetic field applications. The selection is a dependable reference for readers interested in high field magnetism.
Categories: Science

Environmental Magnetism

Environmental Magnetism

It arises from the interaction of an applied magnetic field and the motion of electrons orbiting the nucleus. Because electrons carry charge, ...

Author: Mark Evans

Publisher: Elsevier

ISBN: 9780080505787

Category: Science

Page: 299

View: 363

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
Categories: Science