Showing papers in "Materials Research Bulletin in 1980"

TL;DR: In this paper, a new system LixCoO2 (0 Li x CoO 2 Li ) is proposed, which shows low overvoltages and good reversibility for current densities up to 4 mA cm−2 over a large range of x.

TL;DR: In this paper, a new form of titanium dioxide, the octatitanate K2Ti8O17 and intergrowths between K2 Ti4 O9 and K 2 Ti8 O17 have been prepared by hydrolysis of K2 TI4 O 9 followed by heating at 500°C.

TL;DR: The structure of these compounds is derived from that of Sr3Ti2O7: it can be described as an intergrowth of "oxygen defect double perovskite" layers and of SrO-type layers as mentioned in this paper.

TL;DR: In this paper, it was shown that reversible structural changes occur only when the involved structures differ by a small sheet shift, and the charge or discharge potentials (2.0 V ⩽ V⩽ 3.5 V) were measured as a function of x.

TL;DR: In this article, the introduction of small (≤ 1 micron), insoluble particles in a matrix alters the transport properties of the matrix, and the results show that solid electrolytes exhibit marked enhancement in ionic conductivity without an increase in electronic conductivity.

TL;DR: The system Li2O-TiO2 as mentioned in this paper contains four stable phases: Li4TiO4, Li2TiO3, Li 4TiO5O12 and Li 2Ti3O7, and one metastable phase, H, which forms as an intermediate.

TL;DR: In this paper, a glass consisting solely of high-purity ZrF 4, ThF 4 and BaF 2 was synthesized using reactive atmosphere processing (RAP) techniques.

TL;DR: In this article, temperature dependence measurements on the poled Z-cut SBN crystals showed that this composition has temperature compensated orientations which make this material useful for surface acoustic wave devices.

TL;DR: Li3.4O4 has the highest conductivity with σ ∼ 4 × 10−5 ohm−1cm−1 at 18°C rising to ∼ 10−2 ohm −1 cm −1 at 190°C and activation energy is ∼ 0.44 eV.

TL;DR: The conductivities of these divalent ion solid electrolytes exceed 10 −3 (ohm-cm) −1 at 300°C as mentioned in this paper, which is the state-of-the-art performance.

TL;DR: A 3 BO (with A = Ca, Sr, Ba and B = Sn, Pb) crystallizes in the cubic system (space group Pm3m) with the following constants: Ca 3 SnO: a = 483.4 ± 1 pm, Ca 3 PbO:a = 484.7 ± 1 am, Sr 3 SnOsO:A = 512.0 ± 2 pm, Ba 3 OsO:B = 544.8

TL;DR: In this article, the structural relationship in magnesium hydride has been studied under P-T conditions up to 80 kbar and 900°C, α-MgH2 has a rutile structure under normal conditions and transforms into two new phases under high pressures.

TL;DR: In this article, the reaction of lithium with three transition metal oxides (MnO, LiFeO2, and LiCoO2) has been investigated by an equilibrium electrochemical technique in cells of the type: (−) Al, Li 0.9 Al/LiClKcl (l) /[Li x MO y ] (+) Each system exhibits long constant voltage plateaus characterized by three-phase equilibria.

TL;DR: The hexagonal C14 type compound ZrMn 2 has been found to have a homogeneity region extending from ZrNmn 1.8 to Zrmn 3.4 as discussed by the authors.

TL;DR: In this article, the relative stability of Na-β-Al2O3 powders made from soluble chemicals by spray-freeze/freeze-drying and 5hr/1250°C calcination was investigated.

TL;DR: The crystal structure of the intercalation compounds AgxTaS2 and AgxTiS2 (0≤x≤0.42) is reported in this article. But only stages n=2 and 1 are observed and there is no evidence for higher staging.

TL;DR: In this article, the statistical nature of staging is apparent; interpenetration of differently staged regions, which affords a mechanism for facile interconversion between intercalates of different stages, can also be clearly seen.

TL;DR: The phase diagram of the system Li 4 GeO 4 Zn 2 GeO4 is fairly similar to the corresponding silicate system and contains a wide range of solid solutions that extend to either side of the composition Li 2 ZnGeO 4.

TL;DR: In this paper, the synthesis and properties of glasses in the systems HfF4/1bBaF2/ 1bThF4, Hf4/2.5bZrF4+1bLaF3, and HfC4/3bZRF4−1bBFAF2+2.2bLa F3 are reported, and it is suggested that any increase in scattering loss in going from ZrF 4 to Hf 4 will be offset by lower multiphonon losses in the latter.

TL;DR: In this article, the formation of α-NaFeO 2 and β-NaO 2 below 700°C was found to depend strongly on the structure of starting iron oxide.

TL;DR: In this article, a number of new hydrides are established including CaNi 2 H 3.4, CaNi 3 H 4.6 and CaNi 4 BH 3.8.

TL;DR: In this article, phase relationships within and among ternary systems were described for limited ranges of composition and transition temperatures of several superconducting and/or magnetic compounds were reported.

TL;DR: In this article, two solid solutions K1−xBixF2x+1 (0.50 ⩽ x⩽ 0.60) and two homologous KBi3F10 (x = 0.75) phases have been obtained.

TL;DR: A new Ir(V) oxide LaLi 05 Ir 05 O 3 with an ordered orthorhombic perovskite structure has been prepared in this article, whose lattice parameters are a = 563, b = 558 and c = 787 A The possible space group is Pmm2Ir(V), with a low spin configuration t 4 2g e 0 g (3 T 1g ground term) and a large spin-orbit coupling constant (7485 ± 30 cm −1 )

TL;DR: In this paper, a wet chemical technique was used to prepare Na 1+x Zr 2 Si x P 3−x O 12, where a fine zirconia slurry was mixed with a solution of sodium carbonate and ammonium dihydrogen phosphate.

TL;DR: The first crystal structure refinement of human tooth enamel, per se, has been achieved in this paper, where both x-ray and neutron powder diffraction data were analyzed with the Rietveld method of whole-pattern fitting.

TL;DR: The crystallography of a new group of ternary compounds in the system rare-earth-rhodium-tin (1, 3) has been investigated in this paper.

TL;DR: In this article, the authors showed that the alkyl chains are oriented in an approximately normal direction to the walls formed by the |TiNbO 5 | − sheets.

TL;DR: The chemical diffusion coefficient of the vario-stoichiometric phase of LiIn was investigated in this article, where the authors showed that the diffusion coefficient increases rapidly with decreasing lithium concentration, approaching the value of 3.98×10−5 cm2/sec near the In-rich phase boundary of “LiIn.

TL;DR: In this article, microcalorimetric and dilatometric studies of PbSnF 4 give evidence of several allotropic forms for PbsnF 4, and the complex thermal behavior may be summarized as follows :.