A weak damping was observed in the hole insentive mode of the magnetoplasma waves in bismuth at the neighbourhood of the hole cyclotron resonance field. This is because that the mode becomes to be slightly hole sensitive by the mode mixing due to the nonlocal effect. Both the cyclotron mass and Fermi velocity of the hole have simultaneously been determined from the upper and lower damping edges.
A new paramagnetic resonance spectrum has been observed from Sm3+ ions in CaF2 on sites having trigonal symmetry. The principal g values are g∥ = 0.415 ±0.0001 and g⊥ = 0.934 ± 0.001.
The spontaneous magnetization of EuO and GdN has been determined by the extrapolation of the straight lines H/M = f(M2) and analyzed as a function of temperature.
Notes on the calculation of potential constants for a site of low symmetry in the lattice are presented. The calculated values of the electric field at an anion site and its gradient a cation site are tabulated for several rutile type crystals.
The electrical behavior of metallic indium antimonide was investigated as a function of pressure and temperature. It has been found that a new phase of metallic indium antimonide exists in the higher pressure region.
The electron energy loss spectrum of solid argon, obtained by Bostanjoglo and Schmidt, is interpreted in terms of two excitonic series associated with transitions from the spin-orbit split valence bands to the conduction band Γ1.
Attenuation measurements on compressional elastic waves in quartz at 9.3 Gc/s and at 4.2°K reveal unexpectedly low values of the order of 10-3 db/cm. The trend of our data for increasing lengths of sample suggest that most of the observed loss results from imperfect end faces, and that the true bulk attenuation may be less than 10-4 db/cm at x-band frequencies.
T1ϱ measurements have been made on samples of stereoregular polym frequencies and activation energies obtained for the molecular motions observed agree well with previous relaxation measurements on these materials.
Conductivity measurements were carried out at different frequencies and temperatures on 0.005 and 0.01 normal potassium chloride solutions. The ratio between the high frequency conductivity to low frequency conductivity was found to be greater than unity. This ratio increases with frequency and decreases with concentration.
Phonon dispersion relations in beryllium are calculated using the pseudo potential method and compared with the experimental data of Schmunk et al.
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