Showing papers in "Materials Research Bulletin in 1978"
TL;DR: In this article, a series and parallel model for composite piezoelectric and pyroelectrics is presented, which leads to several interesting results, such as a diphasic pyroelectric in which neither phase is pyrocharged.
1,706 citations
TL;DR: Li 16−2x D x (TO 4 ) 4, where D is a divalent cation and T is a tetravalent cation, has a resistivity of 8 ω-cm at 300°C, lower than that of any Li + -ion conductor so far reported.
439 citations
TL;DR: In this article, a review of oxide ion conductive solid electrolytes based on bismuthsesquioxide is presented, which are characterized by their conductivities more than ten times higher than those of conventional oxide ion ion conductors such as stabilized zirconias.
339 citations
TL;DR: Flexible PZT/polymer composite transducers have been fabricated with a novel microstructural configuration in this paper, where the concept of connectivity has been applied in the evaluation of the type of structure needed to optimize the properties of the composite.
322 citations
TL;DR: In this paper, the topochemical lithiation of rutile related MO 2 with n-BuLi and in nonaqueous lithium electrochemical cells is reported, which illustrates the importance of electronic conductivity and cell volume to substantial lithium incorporation.
264 citations
TL;DR: The effects of annealing treatment on the physical properties of amorphous alloys obtained by splat cooling are discussed in this article, where three mechanisms, diffusion, topological short range ordering, and compositional short-range ordering, have been identified to cause these effects.
261 citations
TL;DR: In this paper, the charge balance for the Th 4+ → Ln 3+ substitution can be provided by either an equimolar Ca 2+ → ln 3 + or Si 4+→ p 5+ substitution.
164 citations
TL;DR: Stoichiometric CaFeO 3 was prepared and was characterized by crystallographic, magnetic and electrical measurements as mentioned in this paper, which indicated a phase transition from the metallic-paramagnetic (the high-temperature phase) to the semiconductive-antiferromagnetic phase.
135 citations
TL;DR: In this article, the perovskite phase LaMnO3±λ was revealed to have nonstoichiometry ranging from 2.947 to 3.079 under the oxygen partial pressure below logPO2(atm)=0 at 1200°C.
124 citations
TL;DR: In this paper, the transcrystalline and inter-crystaline resistances of polycrystallinized Li3N were evaluated at 25°C and the inter-cell conductivity was found to be 6.6×10−4 (ohm cm)−1 and 24.1 kJ/mole, respectively.
TL;DR: The conductivity of hydronium beta alumina has been measured with blocking and non-blocking electrodes and is 5 × 10 −3 (ohm cm) −1 at 25°C as mentioned in this paper.
TL;DR: In this article, the glass-forming regions in the systems LiPO3LiX with X = I, Br, Cl were determined and the study of the electrical conductivity of glasses belonging to these systems was carried out.
TL;DR: In this paper, the blue first-stage graphite salt of composition C/sub 8/AsF/sub 6/, which x-ray single crystal photographs show is hexagonal with a = 4.92 (2), c = 8.10(2), V = 170 A/sup 3/.
TL;DR: In this article, the use of solid solution precursors is introduced as an effective low temperature synthesis technique which facilitates solid state reaction in selected mixed metal oxide systems and has resulted in the assemblage of a new isobaric (PO2 = 1.0 atm), subsolidus phase diagram.
TL;DR: In this article, a reversible order-disorder transition of strontium ferrate (III) took place and the compound had a statistically disordered oxygen-deficient perovskite structure with cubic symmetry.
TL;DR: In this article, the electrical and dielectric properties of new ZrF 4 based glasses have been studied in the frequency and temperature ranges 5Hz-500kHz and 130-280°C.
TL;DR: In this article, the deuterium absorption in FeTi yields ternary deuterides and is associated with symmetry reduction corresponding to considerable distortions of the CsCl-type metal structure.
TL;DR: In this article, three allotropic varieties of PbSnF4 -α, β and γ - have been detected by DTA and X-ray diffraction, and the α ai β and β ai γ transitions are reversible and occur at 80 and 355°C respectively.
TL;DR: In this article, the authors report the preparation and properties of new compounds with the composition Mo2Re4X8 (X = S, Se) and Mo4Re2Te8.
TL;DR: In this paper, the authors present a characterization of hydrogen uptake in Ti1−xZrxMn2 compounds in terms of the amount of hydrogen take up, equilibrium pressures as a function of temperature and derived thermodynamic parameters (ΔH, ΔS, ΔG).
TL;DR: In this paper, the short-range order in glasses of the TeO2V2O5 system is studied with the aid of X-ray diffraction, and the main structural units in most of the glasses are VO5- and TeO3-groups.
TL;DR: In this article, the influence of physical and chemical factors on the transport properties of solid electrolytes has been examined and has allowed to determine several criteria characteristic of high mobility, and materials with high electrical performances were isolated in the scope of these considerations.
TL;DR: Vanadium diselenide has been found to react in a reversible manner with lithium in electrochemical cells as discussed by the authors, and the rate of reaction was very rapid, comparable with that of titanium disulfide.
TL;DR: The crystal structure of Na3Nd(PO4)2 has been determined from three-dimensional Mo-Kα diffractometer data as mentioned in this paper, which is very closely related to that of Na 3La(VO4) 2.
TL;DR: In this article, the synthesis of LiAlO/sub 2/ by reaction of alumina with mixtures of alkali carbonates or with alkali hydroxides was studied.
TL;DR: In this paper, the photostructural transformations of chalcogenide vitreous semiconductors are investigated and a conclusion is reached that these changes result from photostructureural transformations.
TL;DR: In this article, a sample of Na5YSi4O12 with densities up to 95% of theoretical and Na+ion conductivities at 300°C up to 0.15 Ω−1 cm−1 have been fabricated from powders synthesized by solid-state reaction of Na2C2O4, Y2(C 2O4)3 and SiO2.
TL;DR: In this article, the authors measured the relaxation times in hydrogen uranyl phosphate and arsenate, which are fast proton conductors, and found that the two compounds undergo a phase transition resulting in discontinuities in T/sub 1/ and t/sub 2/ and a DTA peak.
TL;DR: In this paper, a series of rhombohedral Mo chalcogenides (Chevrel compounds) based on S or Se have been melted under argon pressures up to 100 atm. Density measurements on these crystals, together with x-ray and microscopic observations lead to the conclusion that the formula MxMo6X8 describes correctly the great majority of these compounds.