Magnetic Hysteresis in Novel Magnetic Materials

ISBN-13: 9780792346043 / Angielski / Miękka / 1997 / 905 str.

George C. Hadjipanayis; G. C. Hadjipanayis

Opis

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.

Spis treści

Preface. Theory. Coherent and Incoherent Magnetization Processes in Non-Interacting Particles; A. Aharoni. Interaction Effects in Fine Particle Systems; R.W. Chantrell. Monte Carlo Simulations of Small Interacting Magnetic Particles; K.N. Trohidou, et al. A Monte Carlo Simulation of the Hysteresis Behavior of Small Magnetic Particles; X.D. Zianni, K.N. Trohidou. Micromagnetics of Thin Films and Multilayers; T. Schrefl. Micromagnetism of Small Structures; S.T. Chui. Magnetic Hysteresis in Bilayer; H.S. Darendelioglu. Micromagnetism and the Microstructure of Modern Magnetic Materials; H. Kronmüller. Stochastic Model for Domain Wall Dynamics and Ferromagnetic Hysteresis; C. Beatrice, et al. Influence of Defects Shape and Period on Domain Wall Coercive Field; K.L. Metlov, I. Tomás. Avalanches Size Distribution in Model Hard Magnetic Materials Having Different Textures; O.A. Chubykalo, et al. Domain Wall Dynamics and Preisach Modeling; G. Bertotti. The Effect of Thermally Induced Relaxation on the Remanent Magnetization in a Moving Preisach Model; R.M. Roshko, et al. A Vectorial Preisach-Type Model for Magnetic Hysteresis for Interacting Stoner-Wohlfarth Particles; C. Michelakis, et al. An Experimental System of the Classical Preisach Model of Magnetic Hysteresis; M. Pardavi-Horvath. Analysis of the Identification Methodologies in Preisach Modeling; A. Stancu. First Principles Determination of Hyperfine Fields in Pt/Fe(111) Multilayers; G. Lu, et al. Critical Behavior of the Thermal Conductivity Near a Magnetic Phase Transition; A. Rassili, M. Ausloos. Characterization Techniques. Imaging Magnetic Structures in the Transmission Electron Microscope; J.N. Chapman, K.J. Kirk. Domains, Domain Walls and theMagnetisation Reversal Process; J.N. Chapman, K.J. Kirk. Magnetic Force Microscopy of Sintered NdFeB; L. Folks, et al. Magnetic Viscosity and Hysteresis Phenomena; J. Tejada, et al. Quantum Hysteretic Phenomena in Mn12-Acetate Magnetic Clusters; J. Tejada, et al. Anomalous Magnetic Aftereffect; K.- H. Müller, et al. NMR as a Tool in Structural Studies of Modern Magnetic Materials; E. Jedryka, et al. Novel Materials and Properties. Small Particles. Particulate Magnetic Recording Media; D.E. Speliotis. Angular Dependence of Magnetization Reversal and Néel Brown Theory; W. Wernsdorfer, et al. Anomalous Hysteresis Properties in Ferrimagnetic and Antiferromagnetic Nanoparticles; A.E. Berkowitz, et al. Magnetisation Reversal in Cobalt and Permalloy Nano-Elements; K.J. Kirk, et al. Magnetization Dependence on Temperature and Grain Size in Nanostructured Samples; J.M. González, et al. Effect of Preparation Conditions on the Structural and Magnetic Properties of Fe-SiO2; J.A. Christodoulides, et al. Magnetic Characterization of Ni Nanoparticles Dispersed in Silica; J.M. González, et al. Fine Particle Magnetism in SmCo5 Produced by Ball Milling; E. Kirkpatrick, et al. The Application of Spark Erosion to the Synthesis of Thin Films Containing Ultrafine Particles; N.B. Shevchenko, et al. Compaction of Chemically Prepared Amorphous Fe-B Nanoparticles; P.V. Hendriksen, et al. Magnetic Behaviour of &ggr;-Fe2O3 Nanoparticles; B. Martinez, et al. Hysteresis Loops and Remanence Curves of Small &ggr;-Fe2O3 Particles with Different Packing Densities; M. Grigorova, et al. Irreversible and Time