InhaltsangabeQuantum Crystals.- 1. Plenary Topics.- Quantum Crystals: Theory of the Phonon Spectrum.- Quantum Solids and Inelastic Neutron Scattering.- Magnetic and Thermal Properties of Solid and Liquid 3He Near the Melting Curve.- 2. Helium Lattice Dynamics.- 2.1 Specific Heat and Sound.- Specific Heat of Solid 3He.- The Temperature Dependence of the Longitudinal Sound Velocity of Single Crystals of HCP 4He.- Lifetimes of Hypersonic Phonons in Solid 4He.- Sound Wave Propagation and Anharmonic Effect in Solid 3He and 4He.- 2.2 Heat Transport in Isotope Mixtures.- NMR Measurements on 3He Impurity in Solid 4He.- Calculation of the Diffusion Rate of 3He Impurities in Solid 4He.- NMR Study of Solid 3He-4He Mixtures Rich in 3He.- Phonon Scattering by Isotopic Impurities in Helium Single Crystals.- The Orientation and Molar Volume Dependence of Second Sound in HCP 4He Crystals.- Structure of Phase-Separated Solid Helium Mixtures.- 2.3 Scattering and Vacancies.- Raman Scattering from Condensed Phases of 3He and 4He.- Single-Particle Excitations in Solid Helium.- Single-Particle Density and Debye-Waller Factor for BCC 4He.- Thermal Defects in BCC 3He Crystals Determined by X-Ray Diffraction.- Possible Bound State of Two Vacancy Waves in Crystalline 4He.- Multiphonon and Single-Particle Excitations in Quantum Crystals.- 3. Helium-3 Nuclear Magnetism.- What is the Spin Hamiltonian of Solid BCC 3He?.- Magnetic Properties of Liquid 3He below 3 m°K.- Properties of 3He on the Melting Curve.- Low-Temperature Solid 3He in Large Magnetic Fields.- High-Magnetic-Field Behavior of the Nuclear Spin Pressure of Solid 3He.- The Interaction of Acoustic Phonons with Nuclear Spins in Solid 3He.- 4. Helium Monolayers.- Motional Narrowing in Monolayer 3He Film NMR.- Neon Adsorbed on Graphite: Heat Capacity Determination of the Phase Diagram in the First Monolayer from 1 to 20°K.- NMR in 3He Monolayers Adsorbed on Graphite below 4.2°K.- Thermodynamic Functions for 4He Submonolayers.- Elastic Properties of Solid 4He Monolayers from 4.2°K Vapor Pressure Studies.- 5. Molecular Solids.- Sound Velocities in Solid HCP H2 and D2.- Polarizability of Solid H2 and D2.- Scattering of Neutrons by Phonons and Librons in Solid o-Hydrogen.- Determination of the Crystal Structures of D2 by Neutron Diffraction.- Velocity and Absorption of High-Frequency Sound Near the Lambda Transitions in Solid CD4.- Growth and Neutron Diffraction Experiments on Single Crystals of Deuterium.- Proton Resonance in Highly Polarized HD.- Thermal Conductivity of Solid HD Containing Isotopic Impurities.- Self-Consistent Calculations of the Lattice Modes of Solid Nitrogen.- 6. Other Topics in Quantum Crystals.- Ionic Mobilities in Solid Helium.- Vapor Pressure Ratios of the Neon Isotopes.- Investigation of Phonon Radiation Temperature of Metal Films on Dielectric Substrates.- Surface Thermal Expansion in Noble Gas Solids.- Pair Potentials for van der Waals Solids from a One-Electron Model.- Magnetism.- 7. Plenary Topics.- Magnetic Interaction Effects in Dilute Alloys.- Magnetic Phase Transitions at Low Temperatures.- 8. Phase Transitions.- Magnetic Equations of State in the Critical Region.- Properties of PrPb3 in Relation to Other L1 2 Phases of Pr.- On Nuclear Magnetic Ordering Phenomena in Van Vleck Paramagnetic Materials.- Electronic Magnetic Ordering Induced by Hyperfine Interactions in Terbium and Holmium Gallium Garnets.- Low-Field Magnetic Properties of DyVO4 and TbPO4.- Magnetic Ordering of the Delocalized Electron Spin in DPPH.- Tricritical Susceptibility in Ising Model Metamagnets and Some Remarks Concerning Tricritical Point Scaling.- Double-Power Scaling Functions Near Tricritical Points.- Low-Temperature Spontaneous Magnetization of Two Ferromagnetic Insulators: CuRb2Br4 2H2O and CUK2C14 2H2O.- Heat Capacity Measurements on KMnF3 at the Soft Mode and Magnetic Phase Transitions.- Magnetic and Magnetoopical Effects at the Phase Transition in Antiferromagnetic Ferrous Carbonate.- 9. Low-Dimensi