Category: Magnetism

By James E. T. Channell, Dennis V. Kent, William Lowrie, Joseph G. Meert

Published via the yank Geophysical Union as a part of the Geophysical Monograph Series.

To mark the seventieth birthday of Neil D. Opdyke, a Chapman convention entitled "Timescales ofthe inner Geomagnetic box" was once held on the college of Florida in Gainesville on March 11th of September, 2003. This AGU Chapman convention was once backed via the U.S. nationwide technology starting place, college of Florida, Florida Museum of normal heritage, and 2G organisations. 41 talks and twenty-three posters have been provided in the course of the three-day assembly. This monograph includes twenty-four of these papers, and is a balanced subset ofthe papers offered on the convention. The monograph is split into 3 components. half 1 bargains with the geocentric axial dipole (GAD) speculation, continental reconstruction, and long term geomagnetic box habit. half 2 contains papers on magnetic polarity stratigraphy and the purchase of sedimentary magnetization. half three offers with secular edition, paleointensity, and non permanent geomagnetic box habit. those are all issues which have been considerably impacted through Neil's medical work.Content:

By A.M. Tishin

The magnetocaloric impact describes the switch in temperature of a magnetic fabric below adiabatic stipulations in the course of the program or removing of an exterior magnetic box. This impression is especially stated at temperatures and fields reminiscent of magnetic part transitions, and it's a robust and everyday instrument for research of the magnetic nation and mechanisms of those transitions. extra lately there was major curiosity in its attainable exploitation in magnetic refrigeration and cryocooling structures.

The Magnetocaloric impression and its purposes provides an entire assessment of theoretical and experimental study effects surrounding the magnetocaloric impact, and a complete dialogue of present and power purposes of the phenomenon. The booklet studies these fabrics with magnetic second of either band and localized nature and numerous forms of magnetic ordering, and fabrics with extra unique magnetic buildings also are thought of. a close dialogue of experimental and theoretical experiences of a large number of infrequent earth magnetic fabrics is given, with emphasis at the actual interpretation of saw phenomena.

By Joel S. Miller, Marc Drillon

Molecule-based magnets, huge magnetoresistance and spin frustration are only a number of phrases which exhibit that our realizing of magnetic habit, as soon as considered mature, has loved new momentum because it is being elevated by way of contributions from molecular chemistry, fabrics chemistry and sciences to sturdy country physics. The spectrum spans molecule-based - natural, inorganic, and hybrid - compounds, metal fabrics in addition to their oxides forming skinny movies, nanoparticles, wires and so forth. New phenomena are explored that open promising views for commercially utilized "smart" fabrics. In topical reports written through most well known scientists tendencies and up to date advances targeting the correlations among digital constitution and magnetic houses are defined in a transparent and distinctive manner. With strong stability among conception and test this ebook publications complex scholars and experts alike to this study region. It allows the evaluate of experimental observations and serves as a base for the layout of latest magnetic fabrics. As a special reference paintings, it's crucial for everybody desirous about the phenomena of magnetism!

By Dieter Biskamp

This e-book presents a finished advent to the speculation of magnetic box line reconnection, now a big topic in plasma physics. Biskamp makes a speciality of a number of the reconnection mechanisms dominating magnetic methods less than the various plasma stipulations encountered in astrophysical structures and in laboratory fusion units. The ebook includes significant elements: the 1st offers with the classical resistive procedure, whereas the second one offers an summary of weakly collisional or collisionless plasmas. purposes basically quandary astrophysical phenomena and dynamo concept, with emphasis at the sun and geodynamo, in addition to magnetospheric substorms--the such a lot unbelievable reconnection occasions within the magnetospheric plasma. The theoretical strategies and effects additionally practice on to reconnection techniques in laboratory plasmas, particularly the sawtooth phenomenon in tokamaks. The publication may be of worth to graduate scholars and researchers attracted to magnetic procedures either in astrophysical and laboratory plasma physics.

By Gerald D. Mahan

Condensed topic in a Nutshell is the main concise, obtainable, and self-contained creation to this interesting and state of the art sector of recent physics. This best textbook covers all of the normal themes, together with crystal buildings, strength bands, phonons, optical homes, ferroelectricity, superconductivity, and magnetism. It comprises in-depth discussions of delivery concept, nanoscience, and semiconductors, and in addition positive factors the most recent experimental advances during this fast-developing box, akin to high-temperature superconductivity, the quantum corridor influence, graphene, nanotubes, localization, Hubbard versions, density sensible thought, phonon focusing, and Kapitza resistance. wealthy intimately and whole of examples and difficulties, this textbook is the full source for a two-semester graduate path in condensed subject and fabric physics.

• Covers average themes like crystal constructions, power bands, and phonons
• Features the newest advances like high-temperature superconductivity and more
• Full of instructive examples and difficult problems
• Solutions guide (available in basic terms to teachers)

By Amikam Aharoni

The emphasis of this moment variation is on introducing the principles of the various subfields, highlighting the path and tendency of the latest learn. New to this version is up to date fabric at the nucleation challenge and numerical micromagnetics. This publication is appropriate for first-year graduate and complicated undergraduate scholars in physics and engineering in addition to for training engineers and experimental physicists who paintings within the box of magnetism and wish a very good reference publication.

By Carlo Morselli

What do an unlawful drug importer, a stolen automobile exporter, a Hells Angels member, an accountant, and an aircraft hijacker have in universal? Like most folks, all of them function in social networks—and every now and then, they arrive jointly in legal networks which, notwithstanding tightly based and regulated, endure consistent switch. inside of legal Networks takes a social community viewpoint to various unlawful corporations, concentrating on those organisations’ "flexible order" and the collective coping and adjustment innovations of offenders while key participants or possibilities are misplaced.

Rich with conversation information, digital surveillance fabric, and different law-enforcement investigative resources, case experiences pursue a few analytical paths into the partnerships, pecking orders, and events in flux (e.g., highway gang presence inside of drug distribution), and establish crucial demanding situations to analyze (e.g., are those failed networks if individuals are arrested?). Flexibility is published as a motive force because the publication examines:

• Operational buildings and dynamics.
• Roles of key and peripheral players.
• The tentative stability among potency and security.
• Criminal community positions and person traits.
• Uses of valid actors in unlawful settings.
• Adaptation whilst networks are disrupted.

Compellingly written and meticulously offered, within felony Networks deals infrequent up-close insights to readers within the criminology and arranged crime examine fields, and to social community theorists and analysts.

By Kosuke Nomura

This thesis describes a unique and strong method of deriving a Hamiltonian of the interacting boson version in response to microscopic nuclear power density sensible concept. in line with the truth that the multi-nucleon brought about floor deformation of finite nucleus may be simulated via powerful boson levels of freedom, observables within the intrinsic body, received from self-consistent mean-field strategy with a microscopic strength density sensible, are mapped onto the boson analog. Thereby, the excitation spectra and the transition charges for the suitable collective states having sturdy symmetry quantum numbers are calculated by means of the following diagonalization of the mapped boson Hamiltonian. as the density practical strategy offers a correct international description of nuclear bulk homes, the interacting boson version is derived for varied occasions of nuclear form phenomena, together with these of the unique nuclei investigated at rare-isotope beam amenities around the globe. This paintings presents, for the 1st time, an important items of knowledge approximately how the interacting boson version is justified and derived from nucleon levels of freedom in a complete manner.

By Barbara Sieklucka, Dawid Pinkowicz

A complete evaluate of this quickly increasing interdisciplinary box of research.
After a quick advent to the fundamentals of magnetism and molecular magnetism, the textual content is going directly to hide particular homes of molecular magnetic fabrics in addition to their present and destiny functions. layout recommendations for buying molecular magnetic fabrics with wanted actual houses are mentioned, as are such multifunctional fabrics as excessive Tc magnets, chiral and luminescent magnets, magnetic sponges in addition to picture- and piezo-switching magnets.
the result's an outstanding source for fabrics scientists, chemists, physicists and crystal engineers both coming into or already operating within the box

By John R. Brauer

This useful textual content good points computer-aided engineering tools for the layout and alertness of magnetic actuators and sensors, utilizing the most recent software program instruments. John Brauer highlights using the electromagnetic finite point software program package deal Maxwell? SV and introduces readers to purposes utilizing SPICE, MATLAB?, and Simplorer?. A loose obtain of Maxwell? SV is offered on the Ansoft website, and the software program documents for the examples can be found at ftp://ftp.wiley.com/public/sci_tech_med/magnetic_actuators.The textual content is split into 4 parts:* half One, Magnetics, deals an advent to magnetic actuators and sensors in addition to simple electromagnetics, via an exam of the reluctance approach, the finite aspect procedure, magnetic strength, and different magnetic functionality parameters* half , Actuators, explores DC actuators, AC actuators, and magnetic actuator brief operation* half 3, Sensors, information corridor impact and magnetoresistance as they practice to sensing place. Readers are brought to many different different types of magnetic sensors* half 4, platforms, covers facets of structures universal to either magnetic actuators and sensors, together with coil layout and temperature calculations, electromagnetic compatibility, electromechanical finite components, and electromechanical research utilizing approach versions. the ultimate bankruptcy units forth some great benefits of electrohydraulic structures that include magnetic actuators and/or sensorsA significant thrust of this e-book is educating via instance. as well as solved examples supplied by means of the writer, difficulties on the finish of every bankruptcy aid readers to verify their knowing of recent talents and methods. References, supplied in every one bankruptcy, aid readers discover specific themes in better depth.With its emphasis on challenge fixing and functions, this is often an amazing textbook for electric and mechanical engineers enrolled in upper-level undergraduate and graduate sessions in electromechanical engineering.