Foreword by Isaak Mayergoyz, Editor, AP Series in Electromagnetism This book is a comprehensive and self-contained exposition of the theory and methods used in the analysis and design of permanent magnet and electromechanical devices. It contains extensive discussions of several key topics of applied magnetics including the theory of ferromagnetism, a survey of magnetic materials, electromagnetic field theory, magnetostatic analysis, magnetic circuit theory, the design of rare-earth permanent magnet structures, the theory of electromechanical energy conversion, and the design and analysis of electromechanical devices. It can serve as a primary or supplemental text for junior, senior or graduate courses on applied magnetics, permanent magnetism, electromechanical energy conversion, or motion control. This book is a valuable text and reference for researchers, professors, students and engineers involved in such diverse areas as the development or fabrication of magnetic materials, the computation of magnetic fields, the design of magnetic circuits, the analysis of inductive electrical components such as coils and solenoids, the design of permanent magnet devices, and the design and simulation of electromechanical devices such as transducers, actuators and motors. The theoretical presentation is reinforced with numerous illustrations and over sixty solved examples of practical applications. Key Features Extensive discussion of magnetic materials including the physical principles of magnetism, domains, hysteresis, soft and hard magnetic materials and their properties, and the magnetization and stability of permanent magnets. Comprehensive presentation of analytical and numerical methods for the analysis of steady currents, permanent magnets, and magnetic circuits. Topics include magnetostatic analysis, the Maxwell stress tensor, the current model, the charge model, magnetic circuit analysis, boundary-value theory, finite element analysis, and finite difference analysis. Over sixty solved examples of practical permanent magnet and electromechanical applications. Analytical analysis and design formulae for the field distributions of the most common rare-earth permanent magnet structures. Analytical analysis and design formulae for the performance of rare-earth magnetic couplings, gears and bearings. Comprehensive presentation of the theory of electromechanical devices with numerous solved examples. Analytical analysis and design formulae for linear and rotational actuators. Analytical analysis and design formulae for permanent magnet brushless DC motors and stepper motors. Presentation of a hybrid analytical-FEM approach for the analysis of electromechanical devices. Introduction to magnetic microactuators. About the Author Dr. Edward Furlani holds BS degrees in both physics and electrical engineering, and MS and PhD degrees in theoretical physics from the State University of New York at Buffalo. He is currently a research associate in the research laboratories of the Eastman Kodak Company, which he joined in 1982. He has worked in the area of applied magnetics for over 15 years. His research in this area has involved the design and development of numerous magnetic devices and processes. He has extensive experience in the analysis and simulation of a broad range of magnetic applications including rare-earth permanent magnet structures, magnetic drives and suspensions, magnetic circuits, magnetic brush subsystems in the electrophotographic process, magnetic and magneto-optic recording, high-gradient magnetic separation, and electromechanical devices such as transducers, actuators and motors. His current research activity is in the area of microsystems and involves the analysis and simulation of various micro-electromechanical systems (MEMS) including light modulators, microactuators and microfluidic components. Dr. Furlani has authored over 40 publications in scientific journals and holds over 100 US patents. Table of Contents PrefaceMaterialsIntroductionUnitsClassification of MaterialsAtomic Magnetic MomentsSingle electron atomsMultielectron atomsParamagnetismFerromagnetismMagnetostatic EnergyDemagnetization FieldAnisotropyMagnetocrystalline AnisotropyShape AnisotropyDomainsHysteresisSoft Magnetic MaterialsHard Magnetic MaterialsFerritesAlnicoSamarium-CobaltNeodymium-iron-boronBonded MagnetsMagnetizationStabilityReview of Maxwell's EquationsIntroductionMaxwell's EquationsConstitutive RelationsIntegral EquationsBoundary ConditionsForce and TorquePotentialsQuasi-static TheoryStatic TheoryMagnetostatic TheoryElectrostatic TheorySummaryField AnalysisIntroductionMagnetostatic AnalysisVector PotentialForce and TorqueMaxwell Stress TensorEnergyInductanceThe Current ModelThe Charge ModelForceTorqueMagnetic Circuit AnalysisCurrent SourcesMagnet SourcesBoundary-Value ProblemsCartesian CoordinatesCylindrical CoordinatesSpherical CoordinatesMethod of ImagesFinite Element AnalysisFinite Difference MethodPermanent Magnet ApplicationsIntroductionMagnet StructuresRectangular StructuresCylindrical StructuresHigh Field StructuresMagnetic LatchingMagnetic SuspensionMagnetic GearsMagnetic CouplingsMagnetic Resonance ImagingElectrophotographyMagneto-Optical RecordingFree-Electron LasersElectromechanical DevicesIntroductionDevice BasicsQuasi-static Field TheoryStationary Reference FrameMoving Reference FramesElectrical EquationsStationary CircuitsMoving CoilsMechanical EquationsElectromechanical EquationsStationary CircuitsMoving CoilsEnergy AnalysisMagnetic Circuit ActuatorsAxial-Field ActuatorsResonant ActuatorsMagneto-Optical Bias Field ActuatorLinear ActuatorsAxial-Field MotorsStepper MotorsHybrid Analytical-FEM AnalysisMagnetic MEMSVector AnalysisCartesian CoordinatesCylindrical CoordinatesSpherical CoordinatesIntegrals of Vector FunctionsTheorems and IdentitiesCoordinate TransformationsGreen's FunctionSystems of EquationsEuler's MethodImproved Euler MethodRunge-Kutta MethodsUnits