Showing papers in "Solid State Communications in 1963"

TL;DR: In this article, the low frequency collective modes of protons are calculated for ferrroelectric crystals of the KH 2 PO 4 type taking into account the tunneling frequency and a simplified interaction between proton sites.

TL;DR: The electrical conductivity of reduced TiO2 was measured over a wide range of temperature and oxygen pressure and was found to be proportional to P(O2) −1 5. It was concluded that the dominant defects in this material are interstitial titanium ions and not oxygen vacancies.

TL;DR: In this paper, the authors developed a rational generalization of the classical theory consistent with the general principles of mechanics by considering the possibility that the energy density might also depend on the gradient of the strain.

TL;DR: In this article, the mobility of small polarons is calculated as a function of the temperature and the frequency of the polarons, which is similar to the frequency dependence in the case of free electrons.

TL;DR: In this paper, the superconducting properties of NbSe/sub 2/ are investigated because of its layer-like structure and the zero-field transition temperature was found to be 5.15 to 5.52 deg K.

TL;DR: In this article, a method for defining a continuous field whose properties are systematically related to the lattice fields is developed, using this method the usual elastic continuum and couple-stress continuum approximations at long waves appear as the leading terms in a generalized continuum description of the harmonic lattice.

TL;DR: In this article, the dominant exchange interaction is between nearest neighbor Eu/sup ++/ ions, and it is shown that the dominant interaction occurs between EuS between 10 and 35 deg K with a sharp peak at 16.2 deg K.

TL;DR: In this paper, a study of de Haas-van Alphen oscillations in p-type Bi 2 Te 3 has yielded all of the effective mass parameters and the valence band structure is found to consist of tilted ellipsoids centered on the mirror planes.

TL;DR: In this paper, a strong dependence of the ultraviolet reflection spectrum of CdS and CdSe on the direction of polarization of the radiation is reported, in terms of the energy band structure of these materials.

TL;DR: In this paper, the frequencies of selected normal modes of germanium at temperature of 100°K and (roughly) 700°K were determined using neutron spectrometry.

TL;DR: The authors observe a 4° and 2°K lumiere emise en impulsions par une jonction alliee d'antimoniure d'indium; a 2°k, pour une densite de courant de 21500 A/cm 2 ; les modes longitudinaux apparaissent.

TL;DR: In der vorliegenden Arbeit wird die Abhangigkeit der Kristallitorientierung epitaktisch gewachsener Metallfolien von der Unterlagentemperatur untersucht.

TL;DR: In this paper, a study of the e.s.r. of the conduction electrons over the temperature range 100°K T H, is given by: ΔH =10·2×10 +6 ρ+35.7.

TL;DR: In this article, the interlayer turn angle ω i in heavy rare earth metals at the upper transition point was calculated, taking into account the effect of a finite mean free path on the Ruderman-Kittel interaction.

TL;DR: The spin relaxation time of liquid gallium has been shown to be about as anisotropic as in the solid phase as discussed by the authors, and there is evidence for an additional relaxation mechanism due to quadrupole interaction.

TL;DR: In this paper, electrical conductivity measurements between 90 and 900°K have been performed on single crystals with composition UO 2.000 - UO2.007, and the activation energy decreases from 0.34 to 0.19 eV with increasing excess oxygen content.

TL;DR: In this article, the predictions of perturbation theory regarding the interaction between charged impurities in metals are presented, and the unperturbed conduction electrons are described by plane waves and the defects, treated as point charges, are screened to first order in the Hartree approximation.

TL;DR: Theoretical expressions for the coefficients β and γ characterizing the quadratic departure from Ohm's law for dominating acoustical scattering are presented for the case of dominating acoustic scattering.

TL;DR: In this paper, it is suggested that there are two basic types of damage which must be considered: local damage centers, distributed more or less uniformly throughout the volume of the crystal, and producing structural effects at the unit cell level similar to those produced by introduction of impurity ions in the lattice.

TL;DR: The Laval theory of elasticity by allowing a nonsymmetric stress tensor permits a maximum of 45 rather than 21 elastic constants as discussed by the authors and draws a distinction between dynamic constants (measured by sound wave techniques) and computed by the method of long waves, and static constants which can be inferred from the dynamic constants using symmetry properties of the elastic constants not accepted by Laval.

TL;DR: In this article, the AC field-excited luminescence of rare earths in zinc sulfide containing copper is reported, and tentative term assignments are derived. Butterworth et al.

TL;DR: In this article, the activation energies and the relaxation frequencies of single crystal aluminum have been investigated at ultrasonic frequencies of 10, 20 and 50 Mc/sec. The results are discussed in connection to Seeger's theory.

TL;DR: In this paper, the electrical resistivities of Mg-Nd and mg-Gd alloys with a rare earth content of less than 0.25 at % have been measured.

TL;DR: In this article, the authors measured dispersion curves for phonons propagating in the [100] and [110] directions in an aluminum crystal at 300°K and estimated total errors of 1-2 per cent.

TL;DR: In this paper, the results of a photochemical investigation of certain temporary changes in the absorption spectrum which occur when additively colored KCl crystals containing polarized and unpolarized M bands are irradiated with polarized F light at low temperatures are described and discussed.

TL;DR: In this article, the spin rotation of hexagonal cobalt is checked by neutron diffraction, mainly due to the thermal variation of the anisotropy constants K1 and K2.

TL;DR: In this paper, several vapor phase grown hexagonal ZnS crystals, faulted as synthesized and also by heating perfect specimens, have been scanned with a 10 μ beam X-ray oscillation camera.

TL;DR: In this article, the relationship between crystal-space and reciprocal-space interpretations of the phonon dispersion curves of this metal was discussed. But the relationship was not discussed in terms of force constants, since the Coulomb interaction between the ions and the ion-electron-ion interaction has to be dealt with in its reciprocal space representation.

TL;DR: The α-δ phase transformation in Pu 5% Ce seems to be martensitic as discussed by the authors, and a correspondence matrix is proposed which relates the lattices and accounts for most of the atomic positions.