Now showing items 241-250 of 298
Correlation of spectral and heat‐capacity Schottky contributions for Dy2O3, Er2O3, and Yb2O3
(The American Institute of Physics, 1982-05-01)
A self‐consistent interpretation of the Raman and infrared spectra and the heat‐capacity measurements on Dy2O3, Er2O3, and Yb2O3, which have the cubic (bixbyite) structure, is presented. New spectra recorded at 10, 80, and ...
Heat Capacities and Thermodynamic Properties of Two Tetramethylammonium Halides
(The American Institute of Physics, 1962-05-01)
Heat capacities of tetramethylammonium chloride and bromide were determined by low‐temperature adiabatic calorimetry from 5° to 350°K. Derived thermodynamic properties were then calculated. Two transitions were found in ...
The structures and dipole moments of Ar–PF3 and Kr–PF3
(The American Institute of Physics, 1989-06-15)
The complexes of PF3 with Ar and Kr, were studied by Fourier transform microwave spectroscopy. The force constants and amplitudes of vibration for the van der Waals modes of the complexes and the average moments of inertia ...
Manganese Disulfide (Hauerite) and Manganese Ditelluride. Thermal Properties from 5 to 350°K and Antiferromagnetic Transitions
(The American Institute of Physics, 1970-04-01)
The heat capacities of manganese disulfide and manganese ditelluride were determined by adiabatic calorimetry in the range 5–350°K. Lambda‐type transitions are present in both compounds with maxima at 47.93°K for MnS2 and ...
Thermophysical properties of the lanthanide sesquisulfides. I. Schottky functions and magnetic and electronic properties of γ‐La2S3, γ‐Ce2S3, γ‐Nd2S3, and γ‐Gd2S3
(The American Institute of Physics, 1989-10-15)
Heat capacity measurements of four lanthanide sesquisulfides La2S3, Ce2S3, Nd2S3, and Gd2S3, prepared in the γ phase, have been obtained between 6 and 350 K by adiabatic calorimetry. The total heat capacity has been resolved ...
Solution of the Schrödinger equation for a particle in an equilateral triangle
(The American Institute of Physics, 1985-11)
The complete solution for the quantum‐mechanical problem of a particle in an equilateral triangle is derived. By use of projection operators, eigenfunctions belonging explicitly to each of the irreducible representations ...
Reaction order versus reaction probability for bimolecular steady state reactions: A+A --> A and A+A --> 0 in one dimension
(Elsevier, 1992-11-01)
Reactions of A+A --> product on one-dimensional lattices with steady state input sources are simulated with various local reaction probabilities, P. Among others the reaction order, X, is examined at different P. Our ...
Coherent potential theory for interacting bands: Phonons and excitons in substitutionally disordered molecular crystals
(The American Institute of Physics, 1973-03-15)
A coherent potential approximation (CPA) theory for disordered molecular solids with interacting bands is reported here. This theory has a wide range of applications. Various examples of interacting bands can be cited, ...
Thermal, magnetic and structural aspects of transitions in Mn0.63Cr0.37As. Thermodynamic properties from 10 to 350 K
(Elsevier, 1987-02)
Subambient crystallographic and magnetic structures and heat capacity on Mn0.63Cr0.37As are measured below 350 K. A complex first order magnetic (helimagnetic Ha- to Hc-type) and structural (MnP- to MnP-type) transition, ...
Pseudopotential SCF–MO studies of hypervalent compounds. II. XeF+5 and XeF6
(The American Institute of Physics, 1980-07-01)
New evidence bearing upon the anomalous properties of xenon hexafluoride has been obtained via the ab initio molecular orbital approach applied successfully to the di‐ and tetrafluorides in paper I. Structures of both XeF+5 ...