Showing papers in "Journal of Solid State Chemistry in 1977"

TL;DR: In this article, a chemical is separated into two components by heating and heat absorption, following which the components are stored in separate vessels and are recombined to generate heat when it is needed.

TL;DR: In this paper, the relationship between nonstoichiometry and the static dielectric constant of perovskite oxides was investigated by X-ray diffraction and electron microscopy.

TL;DR: The crystal structures of five samples of Mg-containing β-tricalcium orthophosphate, β-Ca3(PO4)2, have been refined and the Mg impurity distribution has been examined.

TL;DR: The galvanostatic intermittent titration technique (GITT) has been used to electrochemically determine the chemical and component diffusion coefficients, the electrical and general lithium mobilities, the partial lithium ionic conductivity, the parabolic tarnishing rate constant, and the thermodynamic enhancement factor in Li 3 Sb and Li 3 Bi as a function of stoichiometry in the temperature range from 360 to 600°C as mentioned in this paper.

TL;DR: In this article, the crystal structures of M + VO 3 (M + = K, NH 4, and Cs) have been refined using three-dimensional counter-diffractometer X-ray data and full-matrix least-squares methods.

TL;DR: In this article, X-ray photo-electron spectroscopy was used to analyze the 4f doublet of tungsten and the results showed that WO2.96, WO 2.90 and WO 3 were found to contain ∼13% of W5+ and ∼23% of w5+, respectively, in fair agreement with that expected from their stoichiometry.

TL;DR: In this paper, the C -type rare earth structure of In 2 O 3 is compared with the fluorite structure and the stability of the structure is discussed based on DTA and X-ray work and electron microscopy.

TL;DR: In this paper, the Stokes shift and thermal quenching temperature of the luminescence of Pb2+ and Bi3+ depend strongly on the stiffness of the host lattice, as is to be expected from the configurational coordinate diagram.

TL;DR: In this article, the transient relaxation of the voltage is investigated and is interpreted in terms of the mobilities of both excess and defect electrons between 700 and 900°C, and the movement of the p-n junction is characterized by a shoulder-type voltage-time relation.

TL;DR: In this paper, the basic principles of semiconductor photoelectrochemistry as applied to light to chemical and/or electrical energy conversions are outlined and the role of the Pt coating is to reduce the H2 overvoltage to meet this requirement.

TL;DR: In this article, the authors show that the d electrons become itinerant while the materials become ferromagnetic at low temperatures, and that Ba 2+ in LaCoO 3 favors itinerant electron ferromagnetism relative to Sr 2+ while Ca 2+ is less favorable than S 2+.

TL;DR: In this article, the electrical conductivity of the TiO 2 and TiO 3 O 5 was studied in the presence of point defects and the dependence of electrical conductivities versus oxygen pressure, the kinetics of approach to equilibrium, and reversibility during oxidation and reduction paths.

TL;DR: In this article, a series of solid solutions of composition La2−xSrxNiO4 (0 ⩽ x⩽ 1) in which the oxidation state of nickel varies from +2 at 0 to +3 at 0.5 has been prepared.

TL;DR: Profile analysis of powder neutron diffraction data is reviewed in this paper, and some recent examples are described in detail, including Fourier analysis, profile refinement of X-ray data, and pulsed neutron sources.

TL;DR: In this article, the properties of the series Mo 6 X 8− x Y x (X = S, Se, Te; Y = Br, I) having the hexagonal rhombohedral structure of the PbMo 6 S 8 type were studied.

TL;DR: The authors observe lors d'essais de croissance cristalline de NbSe3 par transport sous iode, peut etre prepare par reaction directe entre les elements en proportions convenables a 700°C.

TL;DR: In this article, a defect model for the perovskite AnMnO3n−1 (n ⩾ 2) was proposed for the Ca2Ti2−2xFe2xO6−x solid solution.

TL;DR: In this article, the crystal structures of orthorhombic chromium oxide hydroxide, β-CrOOH, and deuterated compound, β -CrOOD, were determined by powder profile refinement technique using neutron diffraction data.

TL;DR: The crystal structure of V 0.985 Al 0.015 O 2 has been refined from single-crystal X-ray data at four temperatures as mentioned in this paper, and at 373°K it has the tetragonal rutile structure.

TL;DR: In this article, a model of a tilting system of the MnCl 6 -octahedra layer is introduced in order to understand essential features of structures of different phases and their transition behavior.

TL;DR: The structure of CaD2 has been determined by neutron diffraction and the structure has been confirmed by NMR measurements as discussed by the authors, but the interpretation of the NRT measurements is not easy.

TL;DR: In this paper, the crystal structure of α-AlB12 (tetragonal; a = 10.158(2) A, c = 14.270(5) A), space group P41212 or P43212) has been determined by the single-crystal X-ray diffraction method.

TL;DR: After high pressure/high-temperature treatment (40 kbar at 1000-1500°C) and quenching to ambient conditions CaSi2, EuSi2 and SrSi2 crystallize in the α-ThSi2 type of structure as discussed by the authors.

TL;DR: In this article, the lattice constants of perovskite-type compounds (AA′)(BB′)O6 were verified from a series of compounds with known valency pairs.

TL;DR: In this article, the structure of K+ and Tl+ aluminas was investigated by single-crystal X-ray diffraction and the distribution of conducting ions was found to be similar to that of Na β-alumina.

TL;DR: In this paper, the activity of NiAl2O4 and Al3+ ions was measured by using a solid oxide galvanic cell of the type, Pt, in the temperature range 750-1150°C.

TL;DR: In this paper, the existence of three phases in gamma uranium trioxide between 373°K and 77°K has been studied and the three phases are closely related and the transitions smooth and displacive.

TL;DR: In this article, the effect of the dopant concentration on the enthalpy for the migration of protons and for the rotation of the H 2 PO 4 group has been studied.

TL;DR: Inelastic neutron scattering spectra of metallic H0.4WO3 show only the vibrations that would be expected of a metal hydroxide as discussed by the authors, and the diffusion coefficient of the proton could not be detected from quasi-elastic scattering with the best available neutron spectrometer setting an upper limit to its value of 10−7 cm2/sec.

TL;DR: In this paper, the solution of hydrogen in PdCu fcc substitutional alloys has been examined in the region of low hydrogen contents and the relative electrical resistance relationship has been determined as a function of their hydrogen contents.