Shigeo Miyata1975-10-01OpenAlex
Abstract The basic salts of this system were prepared and their structures and physico-chemical properties were studies by electron microscopy, chemical analysis, X-ray powder diffraction, thermal analysis, i.r. absorption spectra, BET absorption, and acidity-basicity measurements. The salts were found to be new compo…
Layered Double Hydroxides Synthesis and ApplicationsThermal and Kinetic Analysis
А.A. Askadskii、G.L. Slonimskii1975-09-30Russian Chemical Reviews
The influence of the chemical structure of heat-resistant aromatic polymers on their physical properties is discussed mainly in relation to mechanical properties. Methods for determining the heat resistance of polymers and their mechanical performance are described, and the calculation of the principal physical charac…
Polymer crystallization and propertiesMaterial Dynamics and PropertiesPolymer Nanocomposites and Properties
Hrefna Kristmannsdóttir1975-09-30Geologiska Föreningen i Stockholm Förhandlingar
The types of clay minerals formed by hydrothermal alteration of basaltic rocks in geothermal fields in Iceland have been a matter of interest for some time. The fine-grained nature and poor crystallinity of the minerals make investigation difficult. X-ray-diffraction analyses suggest the presence of numerous different…
Geological and Geochemical AnalysisClay minerals and soil interactionsTherapeutic Uses of Natural Elements
P. H. Citrin、G. K. Wertheim、Y. Baer1975-09-29Physical Review Letters
X-ray photoemission line shapes of $2s$ and $2p$ electrons from Al, Mg, and Na have been analyzed in terms of the theory of Mahan and of Nozi\`eres and De Dominicis. The resultant singularity indices, 0.115, 0.13, and 0.19, respectively, require that all x-ray threshold exponents, save that for the Na $K$ edge, be pos…
X-ray Spectroscopy and Fluorescence AnalysisNuclear Physics and ApplicationsElectron and X-Ray Spectroscopy Techniques
David Emin1975-09-29Physical Review Letters
A theory of the thermoelectric power associated with electronic phonon-assisted tunneling (hopping) motion between inequivalent sites has been developed. The general results have been applied to some prototype situations characteristic of hopping in disordered solids.
Advanced Thermoelectric Materials and DevicesMechanical and Optical ResonatorsAdvanced Physical and Chemical Molecular Interactions
Jean‐Paul Pouget、H. Launois、J. P. D’Haenens 等 5 位作者1975-09-29OpenAlex
NMR and EPR measurements in V${\mathrm{O}}_{2}$ under uniaxial stress in the ${[110]}_{R}$ direction lead to a phase diagram entirely similar to that obtained in ${\mathrm{V}}_{1\ensuremath{-}x}{\mathrm{Cr}}_{x}{\mathrm{O}}_{2}$ alloys. Two intermediate phases ${M}_{2}$ and $T$ are observed, and, as established for ${…
Perovskite Materials and ApplicationsTransition Metal Oxide NanomaterialsCatalysis and Oxidation Reactions
P. M. Échenique、J. B. Pendry1975-09-21Journal of Physics C Solid State Physics
Attenuation of the elastic component of an electron beam outside a surface is calculated. Significant attenuation is found in the case of RHEED experiments, explaining an earlier disagreement between theory and experiment observed by Menadue and Colella (see abstr. A9238 of 1972).
Advancements in Photolithography TechniquesElectron and X-Ray Spectroscopy TechniquesPhotocathodes and Microchannel Plates
James E. Houck、Robert W. Buddemeier、Keith E. Chave1975-09-19Science
The skeletons of living specimens of the scleractinian coral Porites lobata have been found to contain up to 46 +/- 5 percent low-magnesium calcite even though free of gross detrital inclusions and boring or encrusting organisms. The calcite crystals occur in the interior of skeletal structures, have dimensions of 20…
Coral and Marine Ecosystems StudiesCalcium Carbonate Crystallization and InhibitionIchthyology and Marine Biology
Cz. Marucha、J. Mucha、J. Rafałowicz1975-09-16physica status solidi (a)
Thermal conductivity measurements of a monocrystalline nonhomogeneous GaAs sample exhibit different conductivities with respect to the direction of heat flow across the sample. It is found that the same applied external temperature gradient causes two different distributions of the effective thermal conductivity coeff…
Electronic Packaging and Soldering TechnologiesThermal properties of materialsElectrical Contact Performance and Analysis
Kazuyuki Itoh、T. Matsubayashi、E. Nakamura 等 4 位作者1975-09-15Journal of the Physical Society of Japan
High-temperature phase transitions in KH 2 PO 4 near 110°C and 180°Chave been studied by X-ray diffraction. The extinction rule observed at 123°C is the same as that in the room-temperature phase. It is concluded that on heating through 187°C crystal system changes from tetragonal to monoclinic whose space group is P…
Thermodynamic properties of mixturesSolid-state spectroscopy and crystallographyChemical and Physical Properties in Aqueous Solutions
Kenji Ema、Katsumi Hamano、Ichiro Hatta1975-09-15Journal of the Physical Society of Japan
By use of a capacitance method, the thermal expansions of NaNO 2 ( T C =163.9°C, T N =165.2°C) along the a -, b - and c -axes were measured from -180°C to 240°C with the accuracy of 1×10 -6 cm in Δ l . Anomalies associated with the phase transitions were observed over the wide temperature range 100 to 200°C. The therm…
Solid-state spectroscopy and crystallographyThermal and Kinetic Analysis
I. Abram、R. Silbey1975-09-15The Journal of Chemical Physics
The problem of electronic energy transport is solids in discussed. A model system of two molecules interacting with a lattice of phonons is considered. The spectral line shapes and energy transport are treated in various limiting cases, and the connection between these two phenomena is discussed.
Luminescence Properties of Advanced MaterialsGlass properties and applicationsPhotochemistry and Electron Transfer Studies
R. N. Bhatt、W. L. McMillan1975-09-15Physical review. B, Solid state
A dynamical Landau theory is proposed to describe the coupled motion of phonons and charge-density waves (CDW) near the CDW instability in transition-metal dichalcogenides. The dynamic structure factor is shown to exhibit a Kohn anomaly and a diverging central mode.
2D Materials and ApplicationsOrganic and Molecular Conductors ResearchSolid-state spectroscopy and crystallography
T. D. Moustakas、K. Weiser1975-09-15Physical review. B, Solid state
Considerable information about transport and recombination properties of amorphous ${\mathrm{As}}_{2}$${\mathrm{Te}}_{3}$ has been obtained from studies of steady-state and transient photoconductivity, dark conductivity, and thermopower in the temperature range from 200 to 350\ifmmode^\circ\else\textdegree\fi{}K: (i)…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsPhase-change materials and chalcogenides
J.M. Carpenter、Charles A. Pelizzari1975-09-15Physical review. B, Solid state
We present a method for calculating the one- and two-phonon law $S(Q,\ensuremath{\omega})$ for models of amorphous solids. The calculation is considerably simplified by explicitly performing the necessary orientation averages. We illustrate use of the method by calculating the one-phonon scattering from long-wavelengt…
Glass properties and applicationsAdvanced NMR Techniques and ApplicationsNuclear materials and radiation effects
Toshiharu Mitsui、Tateki Oka、Y. Shiroishi 等 6 位作者1975-09-15Journal of the Physical Society of Japan
It has been found that in NH 4 LiSO 4 another transition point 186.5°C exists in addition to the already known one 10°C and this substance is ferroelectric between these two transition points. Anomalies of dielectric constant at the transition points are very small as compared with those of proper ferroelectrics. The…
Solid-state spectroscopy and crystallography
Yoshiaki Kogure、Yosio Hiki1975-09-15Journal of the Physical Society of Japan
Simultaneous measurements of the thermal conductivity and specific heat of copper-aluminum (2, 5, 8, and 12 at.%) alloy crystals have been done by the temperature-wave method at 1.4–7.5 K. Specimens containing dislocations of medium (10 10 cm -2 ) and high (10 12 cm -2 ) densities were used. In the case of crystals of…
Numerical methods in engineeringThermal properties of materialsThermodynamic and Structural Properties of Metals and Alloys
J.M. Carpenter、Charles A. Pelizzari1975-09-15Physical review. B, Solid state
The one-phonon scattering law for a disordered harmonic system is related to a frequency-dependent displacement-displacement correlation function. We suggest a means of investigating this correlation function by means of a suitable transformation of inelastic neutron scattering data for such systems.
Material Dynamics and PropertiesGlass properties and applicationsSolid-state spectroscopy and crystallography
F. J. Di Salvo、J. A. Wilson、B. G. Bagley 等 4 位作者1975-09-15Physical review. B, Solid state
Electrical, magnetic, and thermal properties of $1T\ensuremath{-}\mathrm{T}\mathrm{a}{\mathrm{S}}_{2}$ and $1T\ensuremath{-}\mathrm{T}\mathrm{a}{\mathrm{Se}}_{2}$ doped with cations (Ti, Zr, Hf, V, Nb), $1T\ensuremath{-}\frac{{\mathrm{Nb}}_{1\ensuremath{-}x}{\mathrm{Ti}}_{x}{\mathrm{S}}_{2}}{\mathrm{Se}}$, and $1T\ens…
Physics of Superconductivity and MagnetismOrganic and Molecular Conductors ResearchIron-based superconductors research
Roland Ribberfors1975-09-15Physical review. B, Solid state
An approximate relativistic treatment of the differential cross section for Compton scattering against bound electron states is discussed. A simple relationship between the cross section and the Compton profile is found. On contrast to previous work this relationship is valid for all scattering angles.
X-ray Spectroscopy and Fluorescence AnalysisNuclear Physics and ApplicationsElectron and X-Ray Spectroscopy Techniques