Ferromagnetism / Ferromagnetismus

Ferromagnetism / Ferromagnetismus
Author: Henricus P.J. Wijn
Publisher: Springer Science & Business Media
Total Pages: 566
Release: 2012-12-06
Genre: Science
ISBN: 3642460356
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1' (/>2 die Winkel zwischen den Magnetisierungsrichtungen der Kugeln und der Verbindungslinie der Kugelmittelpunkte bedeuten. 1m Gleichgewicht ist (/>1 = (/>2=0 oder 71:, auBer wahrend der Ummagnetisierung. Wie wir in Ziff. 18 (s. auch Ziff. 66) sehen werden, wird der Zustand (/>1=(/>2=0 bei der Koerzitiv kraft He=-VMs/r3 (fUr sich beruhrende Kugeln -(71:/6) Ms) instabil. Die Magnetisierung dreht sich dann in beiden Kugeln gleichzeitig und irreversibel in die entgegengesetzte Gleichgewichtslage ((/>1 = (/>2 = 71:), wobei (/>1 = - (/>2 ist (Fanning-ProzeB von JACOBS und BEAN!, s. Fig. 13e). II. Magnetisierungsprozesse. 14. Problemstellung. Ein ferro- oder ferrimagnetischer Kristall ist in einem starken Magnetfeld H in dessen Richtung (positive Richtung) homogen magneti siert. Bei kontinuierlicher Feldumkehr kehrt sich auch die Magnetisierung M (im allgemeinen teilweise diskontinuierlich) in die entgegengesetzte Richtung urn, wobei der Vorzeichenwechsel von M normalerweise nicht im Feld H =0, sondern erst in einem Gegenfeld He

Elektrische Leitungsphänomene I / Electrical Conductivity I

Elektrische Leitungsphänomene I / Electrical Conductivity I
Author: S. Flügge
Publisher: Springer Science & Business Media
Total Pages: 434
Release: 1956-01-02
Genre: Science
ISBN: 9783540020400
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191 Apart from numerous difficulties arising from the high pressure technique as such, there is a natural limitation to the possibility of applying a hydrostatic pressure, since liquids under pressure will solidify above a certain pressure limit. 8 2 Up to pressures of 3 X 10 kg.jm. at room temperature, a liquid like isopentane can be used. For higher pressures helium gas may be used, perhaps to about 9 2 10 kg.jm. , but BRIDGMAN already encountered enormous leakage difficulties 7 when using this gas at 7.10 kg.jm.2 at 90° K. A solution has been found by applying mechanical pressure for the range 8 9 2 between 3 X 10 and 10 kg.jm. , by using silver chloride as transmittant. In this case, however, one has to apply unknown corrections for shearing stress and deformation of the sample, a problem which BRIDGMAN solved experimentally by a determination of the resistivity in the pressure region between 2 and 8 2 5 X 10 kg.jm. , by the hydrostatic and by the mechanical pressure method as well, and applying the correction factor thus determined to the results obtained at higher pressures. Though this method seems to be right in good approximation, the data for the highest pressures are to be considered as less accurate.

Solid State Physics

Solid State Physics
Author:
Publisher: Elsevier
Total Pages: 138
Release: 2022-10-28
Genre: Science
ISBN: 0323989128
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Solid State Physics, Volume 73, the latest release in this serial that highlights new advances in the field, presents interesting chapters on a variety of current topics in the field, with each chapter written by an international board of authors. - Provides the authority and expertise of leading contributors from an international board of authors - Presents the latest release in Solid State Physics

Handbook of Thin Films, Five-Volume Set

Handbook of Thin Films, Five-Volume Set
Author: Hari Singh Nalwa
Publisher: Academic Press
Total Pages: 661
Release: 2001-10-29
Genre: Science
ISBN: 0125129084
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This five-volume handbook focuses on processing techniques, characterization methods, and physical properties of thin films (thin layers of insulating, conducting, or semiconductor material). The editor has composed five separate, thematic volumes on thin films of metals, semimetals, glasses, ceramics, alloys, organics, diamonds, graphites, porous materials, noncrystalline solids, supramolecules, polymers, copolymers, biopolymers, composites, blends, activated carbons, intermetallics, chalcogenides, dyes, pigments, nanostructured materials, biomaterials, inorganic/polymer composites, organoceramics, metallocenes, disordered systems, liquid crystals, quasicrystals, and layered structures. Thin films is a field of the utmost importance in today's materials science, electrical engineering and applied solid state physics; with both research and industrial applications in microelectronics, computer manufacturing, and physical devices. Advanced, high-performance computers, high-definition TV, digital camcorders, sensitive broadband imaging systems, flat-panel displays, robotic systems, and medical electronics and diagnostics are but a few examples of miniaturized device technologies that depend the utilization of thin film materials. The Handbook of Thin Films Materials is a comprehensive reference focusing on processing techniques, characterization methods, and physical properties of these thin film materials.

Simple Models of Magnetism

Simple Models of Magnetism
Author: Ralph Skomski
Publisher: Oxford University Press on Demand
Total Pages: 366
Release: 2008-01-17
Genre: Science
ISBN: 0198570759
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This volume presents introductory appendices and panels on quantum mechanics, statistical mechanics, and other topics.

Permanent Magnetism

Permanent Magnetism
Author: J.M.D Coey
Publisher: Routledge
Total Pages: 417
Release: 2019-07-16
Genre: Science
ISBN: 1351425420
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One of the first books to approach magnetism from a metal physics perspective, Permanent Magnetism presents research ideas that are being translated into commercial reality for ferrite and Nd-Fe-B magnets, and follows the discovery of interstitial, intermetallic materials. Written by well-known authors, the book contains a comprehensive yet concise treatment of the fundamental theory underlying permanent magnetism and illustrates applications with modern, permanent magnetic materials, including ceramics and intermetallic compounds. Each chapter contains worked examples to reinforce applications and the appendices include detailed mathematics and tabular data on material properties.

Physics of Ferromagnetism

Physics of Ferromagnetism
Author: Soshin Chikazumi
Publisher: OUP Oxford
Total Pages: 668
Release: 2009-04-30
Genre: Science
ISBN: 0191569852
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This book is intended as a textbook for students and researchers interested in the physical aspects of ferromagnetism. The level of presentation assumes only a basic knowledge of electromagnetic theory and atomic physics and a general familiarity with rather elementary mathematics. Throughout the book the emphasis is primarily on explanations of physical concepts rather than on rigorous theoretical treatments which require a background in quantum mechanics and high level mathematics. The purpose of this book is to give a general view of magnetic phenomena, focusing it's main interest at the centre of the broad field of ferromagnetism, ranging from theory to the engineering applications such as soft and hard magnetic materials and magnetic memories. Substantially different from the author's previous book Physics of Magnetism published in 1964, the present edition is neatly organized and includes more recent developments.

Lectures on Solid State Physics

Lectures on Solid State Physics
Author: Georg Busch
Publisher: Elsevier
Total Pages: 555
Release: 2013-10-22
Genre: Science
ISBN: 1483157539
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Lectures on Solid State Physics is a compilation of lectures concerned with various branches of solid state physics. It aims to develop basic physical ideas that lead to a better understanding of phenomena and effects. Comprised of 11 chapters, this book discusses several topics on solid state physics: structure of solids; interference effects in crystals; lattice dynamics; perfect and imperfect crystals; electrons and electron theory of metals; semiconductors; electrical contact effects; transport phenomena, and magnetism. Students, physics graduates, electrical engineers, chemists, and metallurgists will find this book invaluable.

Amorphous Magnetism and Metallic Magnetic Materials - Digest

Amorphous Magnetism and Metallic Magnetic Materials - Digest
Author: A.R. Ferchmin
Publisher: Elsevier
Total Pages: 367
Release: 1983-09-01
Genre: Technology & Engineering
ISBN: 1483290603
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This unique book provides the reader with the only comprehensive overview of the subject. It is an indispensable reference source in that it attempts to compress into one single volume the whole body of basic and applied research on amorphous magnetic metallic materials.Supplements to the Journal of Magnetism and Magnetic Materials appear regularly keeping the information contained in this book as up-to-date as possible. The book has been designed for easy use and is a must for researchers in the field.