Magnetic Excitations and Fluctuations: Proceedings of an International Workshop, San Miniato, Italy, May 28 – June 1, 1984: Springer Series in Solid-State Sciences, cartea 54

I Experimental Studies of One-Dimensional Magnets.- Specific Heat of TMMC due to Non-Linear Excitations: Comparison with Classical Models.- Narrow and Broad Solitons in the Antiferromagnetic Chains of CsCoCl3 and TMMC.- Spin Waves in a One-Dimensional Antiferromagnetic Insulator.- Solitons in a XY (S=1/2) Quantum System.- Mössbauer Relaxation Studies of ?-Domain-Wall Dynamics in Pure and Impure Ising-Type Magnetic Chains.- k=0 Excitations in the Quantum Chain Systems (C6H11NH3)CuCl3 and (C6H11NH3)CuBr3.- Magnon-Phonon Coupling in Spin-½ Quasi 1D Antiferromagnets.- Spin Dynamics in CsNiF3: Spinwaves, 2-Spinwaves, Solitons.- II Spin Wave Dynamics in One Dimension.- Classical Ferromagnetic Chain in a Field; Spin-Waves Versus Non- Perturbative Interactions.- The Life Time of the Spin Waves of a Classical Ferromagnetic Chain in an Applied Magnetic Field.- Quantum Spin Chains: Phase Behaviour and Dynamic Excitations.- Nonlinear Excitations in the Classical XY-Model.- Field Dependent Spin Dynamics of Antiferromagnetic Heisenberg Chains.- Is CsNiF3 a Classical System?.- Spin Wave Theory for the Classical Easy Plane Ferromagnet in Zero Field: Exact Results at Low Temperature.- III Soliton Theories.- Sine-Gordon Statistical Mechanics.- Solitons in Lattice Systems.- Thermodynamics and Correlation Functions of Non-Linear Excitations in the Easy-Plane Ferromagnetic Chain.- Is TMMC a Sine-Gordon System?.- Dynamics of Phase Transitions in Ferromagnetic Domain-Wall Structures.- IV Mixed and Disordered Magnets.- Stress Fluctuations and Local Structural Distortions in Ferromagnetic Metallic Glasses: Their Role on the Relaxation of the Magnetic Permeability.- Frustration on Fractals.- A Weakly Anisotropic Ising Model in a Random Field.- Spin Dynamics Associated with Local Magnons inFeF2: Mn.- 2D Pure and Dilute Quantum Transverse Ising Model.- The Random Eield Ising Model. Equilibrium and Non-Equilibrium Properties.- V Excitations in Ordered Magnets.- Theory of the Raman and Brillouin Scattering on the Excited Electronic States and Magnons in Europium Chalcogenides.- Effect of a Surface on Magnon-Magnon Interactions in Ferromagnets.- Correlation Theory of Magnetic Excitations.- A Rescaling Approach to Excitations in Magnetic Systems.- VI Novel Magnetic Models and Systems.- Monte Carlo Study of the 2-Dimensional Spin-½ XY Model.- Quenching of Spin Fluctuations in Highly Enhanced Magnetic Materials.- Quasiparticle Model for High Frequency Inelastic Neutron Scattering from Intermediate Valence Compounds.- Singlet Ground-State Dimer Systems Cs3Cr2Br9 and Cs3Cr2Cl9.- Helimagnetism in the Heisenberg Model: New Features and Old Mechanisms.- Magnetic Excitations in the Quasi-2d Planar Magnets BaM2((XO)4)2 (M=Co,Ni; X=P,As).- Spin Dynamics of Rare Earth Ions in Crystal Fields Probed by Muon Spin Rotation.- Ground-State Properties of s = 1 Easy-Plane Ferromagnetic Heisenberg Chains.- Bound State of Phonons and CEF-Excitations in CeAl2.- Local Magnetic Field Distributions in Ising Models.- List of Contributors.