The Magnetism Of Amorphous Metals And Alloys

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Contents:Theory of Magnetism in Amorphous Transition Metals and Alloys (Y Kakehashi & H Tanaka)Electronic Structure Calculations in Magnetic Metallic Glasses (W Y Ching)Random Anisotropy in Amorphous Alloys (E M Chudnovsky)Magnetic Properties of Vapor-Quenched Amorphous and Metastable Crystalline Alloys (C L Chien)Neutron Scattering Studies of the Spin Dynamics of Amorphous Alloys (J W Lynn & J A Fernandez-Baca)Numerical Studies of Magnons in Amorphous Magnets (D L Huber)Magnetism and Magneto-Optics of Rare Earth-Transition Metal Glasses and Multilayers (D J Sellmyer et al.) Readership: Materials scientists and condensed matter physicists. keywords:Amorphous Magnetism;Metals, Alloys and Multi-Layers;Electronic Structure;Random Anisotropy;Spin Dynamics

This book describes theoretical aspects of the metallic magnetism from metals to disordered alloys to amorphous alloys both at the ground state and at finite temperatures. The book gives an introduction to the metallic magnetism, and treats effects of electron correlations on magnetism, spin fluctuations in metallic magnetism, formation of complex magnetic structures, a variety of magnetism due to configurational disorder in alloys as well as a new magnetism caused by the structural disorder in amorphous alloys, especially the itinerant-electron spin glasses. The readers will find that all these topics can be understood systematically by means of the spin-fluctuation theories based on the functional integral method.

The papers making up this volume represent a summary of the proceedings of the Second International Symposium on Amorphous Magnetism held at Rensselaer Polytechnic Institute on August 25- 27, 1976. As a result of the resounding success of the Inter national Symposium on Amorphous Magnetism held at Wayne State University on August 17 and 18, 1972 this symposium was again organized with the purpose in mind of providing a forum for dis cussion of the most recent theoretical and experimental advances made in the fields of spin glass systems, amorphous magnetic alloys and magnetic oxide glasses. The symposium was sponsored by the American Physical Society and supported by a grant from GTE Laboratories. Additional support funds were provided by General Electric, Allied Chemical and Ford Motor Company. The program committee consisted of J. J. Becker (General Electric), P. A. Casabella (RPI), P. J. Cote (Watervliet Arsenal), A. M. de Graaf (Wayne State University), R. Hasegawa, Co-Chairman (Allied Chemical), H. O. Hooper (University of Maine), H. B. Huntington (RPI), R. A. Levy, Chairman (RPI), R. K. MacCrone (RPI), L. N. Mulay (Penn State University), G. L. Salinger (RPI) and J. Wong (General Electric). The program of the symposium included 7 invited review papers, 53 contributed papers, and 10 additional papers read by title because of time limitations. The editors wish to extend their deep appreciation to J. J. Becker, A. M. de Graaf, P. Duwez, J. Gustafson, D. L. Huber, U.

Amorphous Metallic Alloys covers the preparation and properties of alloys produced by rapid quenching from the molten state. This book focuses on three technologically important classes of magnetic amorphous alloy—transition metal-metalloid (TM-M) alloys, rare earth-transition metal (RE-TM) alloys, and transition metal-zirconium or hafnium alloys (TM-Zr-Hf). The melt-quenched transition metal-metalloid and transition metal-zirconium type alloys are also emphasized. This text likewise explains in detail how amorphous atomic structure affects magnetic, mechanical, chemical, corrosion, and electrical characteristics. Other topics include glass forming ability in metallic materials, scattering theory of amorphous metals, dynamics of inhomogeneous plastic flow, and powder production processes. This publication is intended for students and researchers conducting work on amorphous metallic alloys.

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.

During the last decades the knowledge of the magnetic properties of the d transition elements and of their metallic alloys and compounds has increased widely. The improvement of preparation techniques for well-defined substances, the development of sophisticated measuring methods and above all the drive to obtain more insight in the origin of magnetic interactions in solids have resulted in the publication of many specific magnetic properties for an abundance of all kinds of metallic materials. The data assembled in this booklet are selected from the comprehensive compilation of magnetic and related properties of metals in the Landolt-Bornstein New Series Group III sub volumes 19a, band c. It has been attempted to include preferentially those properties which are of a basic character and which therefore are most often needed by scientists active in the field of solid state magnetism. In the field of magnetism, there is a gradual transition from the use of cgs/emu units to SI units. It was, however, not intended to represent all data in the units of one system, regardless of how nice this would have been from a systematic point of view. Instead, mostly preference was given to the system of units that was originally used by the authors whose work is quoted. Thus cgs/ emu units occur most frequently. Of colirse the user of the tables and figures is helped in several ways to convert the data to the units which he is most familiar with, see, e. g.

Reflecting the fast pace of research in the field, the Second Edition of Bulk Metallic Glasses has been thoroughly updated and remains essential reading on the subject. It incorporates major advances in glass forming ability, corrosion behavior, and mechanical properties. Several of the newly proposed criteria to predict the glass-forming ability of alloys have been discussed. All other areas covered in this book have been updated, with special emphasis on topics where significant advances have occurred. These include processing of hierarchical surface structures and synthesis of nanophase composites using the chemical behavior of bulk metallic glasses and the development of novel bulk metallic glasses with high-strength and high-ductility and superelastic behavior. New topics such as high-entropy bulk metallic glasses, nanoporous alloys, novel nanocrystalline alloys, and soft magnetic glassy alloys with high saturation magnetization have also been discussed. Novel applications, such as metallic glassy screw bolts, surface coatings, hyperthermia glasses, ultra-thin mirrors and pressure sensors, mobile phone casing, and degradable biomedical materials, are described. Authored by the world’s foremost experts on bulk metallic glasses, this new edition endures as an indispensable reference and continues to be a one-stop resource on all aspects of bulk metallic glasses.

Covers: structure of metallic glass alloys; theory of magnetism in noncrystalline solids; electronic structure of metallic glasses; magnetism in transition metal base amorphous alloys; application of metallic glasses in low-frequency magnetic devices; magnetic material properties and applications of metallic glasses in electronic devices; rare-earth transition metal base alloys; corrosion properties of amorphous alloys.