Section 1: Singlet Ground State.- Singlet Ground State System in Amorphous Rare Earth Alloys (Invited).- Magnetic Properties and Neutron Spectroscopy of Inter-metallic Praseodymium Compounds (Invited).- Pressure Induced Changes in the Magnetism of Crystal Field Split Systems (Invited).- Van Vleck Paramagnets in High Magnetic Fields (Invited).- Singlet Ground State and Combined Electron-Nuclear Magnetism in Praseodymium (Invited).- Study of the Crystalline Electric Field in Praseodymium Intermetallics (Invited).- Magnetic Excitations in TbP under Hydrostatic Pressure.- Transport Properties of the Intermetallic PrAl3.- Effects of Crystalline Fields on the Physical Properties of PrB4.- Section 2: Resonance Spectroscopy, Neutron Scattering.- Crystal Electric Field Effects in the ESR of Dilute Alloys (Invited).- Crystal Field Interaction in Rare Earth Hydrides: EPR and Low Temperature Specific Heat Measurements (Invited).- Crystal Fields and Conduction Electron Effects in Intermetallic Compounds and Alloys (Invited).- Positive Muons as Local Probes in Paramagnetic Rare Earth Systems (Invited).- Mossbauer Studies of the Er6(Fe1?yMny)23Hx System.- 141Pr-NMR Investigations on the Dielectric van Vleck Paramagnetic Compound Pr2(SO4)3 · 8H2O at Very Low Temperatures.- Crystal Field Effects on the ESR Spectra of Rare Earths in CePd3.- 27Al-NMR Investigations on PrAl2 and PrxLa1?xAl3, x=1.0, 0.5, 0.25.- Magnetic Behavior of TbF3.- Crystal Field Splitting in Light Rare Earth Dicarbides Studied by Neutron Spectroscopy.- Section 3: Theory.- Linewidth of Crystal Field Excitations in Metallic Rare Earth Systems (Invited).- Electronic Structure of LaIn3 and LaSn3.- The Application of the Self-Consistent Mori Formalism to Analyze the Dynamical Response of van Vleck Systems in the Vicinity of the Curie Point.- The Origin of the Crystal Field for 4fn Ions in Insulators.- Conduction Electron Effects on Localized Spin Excitations in the RKKY-Theory of Magnetism.- Magnetic Field Dependence of the Conduction Electron Mass in Praseodymium.- Section 4: Lattice Effects.- Phonon Coupling Mechanisms in Intermetallic Rare Earth Compounds (Invited).- Quadrupole Interaction at 169Tm in Cubic TmZn.- Field Dependence of the Magnetic Anisotropy of Gadolinium at 4.2 K under High Pressures.- Magnetostriction of an Yttrium Monocrystal Doped with Terbium Impurities.- Crystal Field Splitting and Thermal Expansion in Dilute Magnesium-Rare Earth Crystals.- Magnetostriction in Dilute Alloys of Rare Earths.- A Martensitic Transformation Triggered by Magnetic Ordering.- Section 5: Tetragonal Materials.- Neutron Diffraction Studies of Magnetic Ordering in Rare Earth and Actinide Intermetallics of the CeAl2Si2 Type (Invited).- Quadrupole Effects in the Lattice Parameters and Magnetic Ordering Temperatures of RECu2Si2 (RE=Rare Earth) (Invited).- Influence of the Crystal Field on Dy3+ Ions in DyM2Si2 Compounds as Revealed by Investigations of Their Magnetic Properties and Nuclear Hyperfine Interactions.- Magnetic Properties of RCo2Si2 and RCo2Ge2 Compounds.- 169Tm Mossbauer Study of TmCu2Si2.- Magnetic Properties of TbCo2Si2 and TbCo2Ge2.- Magnetostriction of Rare Earth Impurities in YCu2Si2.- Section 6: Cerium Compounds.- Electronic Transport Properties of Metallic Ce Systems (Invited).- Fermi Surface and p-f Mixing Mechanism in CeSb (Invited).- Mechanism of Unusual Magnetic Anisotropy in the Cerium Monopnictides (Invited).- Equilibrium and Dynamic Behaviors of Cubic Ce3+ Systems with Anisotropic Coqblin-Schreiffer and Crystal Field Interactions (Invited).- Large Pressure Effects on the Magnetic Phase Diagrams of CeSb and Cex(La0.76Y0.24)1?xSb Compounds.- Crystal Field Excitations in CeAg1?xInx Compounds.- Magnetoresistivity of Cerium Compounds.- Low Temperature Magnetic Phase Transitions of CeBi and CeSb Studied by Magnetoelastics.- Anomalous Behavior of Cerium in RMg3 and RInAg2 Compounds.- Section 7: Rare Earth Metallic and Semi-Metallic Compounds.- Magnetism and Crystal Fields in Ternary Superconductors (Invited).- A Novel Kind of Metal-Rich Lanthanide Compound (Invited).- Magnetic Properties and Quadrupolar Interactions in PrAg.- Experimental Determination of the Electrostatic Contribution to the Crystalline Electric Fields in Non-cubic Metals.- Crystal Field Influence on the Specific Heat and Schottky Effect in Rare Earth Monosulfides.- Interpretation of the ?-Holmium Sesquiselenide Magnetic Susceptibility.- Electronic Structure and Crystal Field in Sm3Se4 and Sm3Te4.- Strong Crystal Field Effects in TmNi5.- Magnetic Properties of Some Solid Amorphous Rare Earth Alloys.- Section 8: Uranium Compounds.- Magnetic Phase Diagrams of Some Uranium Monopnictides and Monochalcogenides (Invited).- Ligand Field of Uranium (4+) Antiprismatic Cluster in LCAO MO Approach.- Magnetic Structure and Lattice Deformation in UO2.- Crystal Field and p-f Mixing Effects in Uranium Pnictides.- Magnetic Properties of the Uranium Trichalcogenides.- Magnetization of U3P4 in Magnetic Fields up to 500 kOe.- Temperature Dependence of Magnetization in U3P4 and U3As4 Single Crystals.- List of Senior Authors.- List of Participants.- Materials Index.
The present conference, the fourth successive on this subject, was organized to commemorate the 75th birthday of Professor Wtodzimierz Trzebiatowski, one of the pioneers in the field of f-electron materials structure, particularly in the magnetism of actinides. This volume contains 64 papers presented at the conference held in Wroctaw, Poland, September 22-25, 1981. Twenty-one were invited talks. About 100 participants from 13 countries attended the meeting during four days of lecture presentation (note these two numbers have been constant for the last two conferences). The conference consisted of sessions devoted to the investigation of crystalline electric fields and structural effects by spectroscopic techniques, neutron diffraction, magnetic, thermodynamic and electrical measurements all over broad temperature, magnetic field and pressure ranges. Materials investigated included rare earth intermetallics, hydrides, diluted systems and actinides, and among them some exhibited singlet ground state behavior. The experimental results were supplemented by theory. It is our pleasure to mention those persons who helped us make the conference successful. The International Advisory Com mittee included W.J.L. Buyers, B.R. Cooper, J.E. Crow, P. Fulde, A. Furrer, T. Kasuya, L. Kowalewski, G.R. Lander, R. Lemaire and D. Wohlleben. We thank them for valuable suggestions concerning invited speakers. We also wish to thank the co-workers of the In stitute for Low Temperature and Structure Research of the Polish Academy of Sciences in Wroclaw, especially A. Baran, M. Grzebyk, K.
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