Showing papers in "Journal of Solid State Chemistry in 1980"

TL;DR: In this paper, the phase relationships in the ternary systems Cr Al C, V Al C and Ti Al C have been investigated, and the perovskite phase Ti3AlC has been found to be in equilibrium with Al4C3, Al(1), Al3V, V7Al8, V (solid solution with Al), V2C, V 2C, γ-VC1−x, and VC 1−x (including V8C7).

TL;DR: In this article, the photoelectron spectra of the synthetic compounds FeS2, CoS2 and CoSe2, and a natural crystal of MnS2 with pyrite structure are reported.

TL;DR: In this paper, the luminescence of doped and undoped PbMoO4 and PbWO4 single crystals was measured and assigned to the 3T11A1 transition in the tetrahedral MoO42−(WO42+) group.

TL;DR: In this paper, the compositional variation of the chemical diffusion coefficient in the six intermediate phases LiSn, Li7Sn3, Li5Sn2, Li13Sn5 and Li22Sn5 of the lithium-tin system at 415°C has been measured.

TL;DR: In this article, the ac electrical behavior of sintered polycrystalline CeO 2 :CaO and CY 2 :Y 2 O 3 solid electrolytes is studied and it is shown that the activation enthalpy for the grain-boundary conductivity is substantially higher than that of the lattice conductivity.

TL;DR: In this paper, the ionic conductivity of β-alumina has been measured in single crystals of single crystals grown from a melt of Na2O, MgO and Al2O3 at 1660 to 1730°C.

TL;DR: In this paper, a time-temperature study of the system γ-AlOOH (boehmite) Al 2 O 3 has been made, and the TTT diagram produced demonstrates the course of the transformation sequence which involves a number of metastable transition alumina intermediate phases.

TL;DR: In this paper, ten ternary arsenides with composition LnT4As12 (Ln = rare earth element, T=Fe, Ru, or Os) were synthesized by reaction of the elemental components in silica ampoules.

TL;DR: Partial Fourier synthesis of the silver ion density in bcc β-Ag2S at several temperatures reveals cation delocalization in bands along 〈100〉 as mentioned in this paper.

TL;DR: In this article, new vitreous fast ionic conductors in the system B2O3, Li2O, and LiCl are described, and a Raman and infrared study undertaken to elucidate the structure of the glasses and the conduction mechanism indicates that the structure consists of a "covalent" boron-oxygen network, in which LiCl is diluted without producing detectable interactions with the latter.

TL;DR: In this paper, a series of ternary chalcogenides, derived from divalent molybdenum, were derived from a linear condensation of Mo6 octahedral clusters.

TL;DR: A combination of high-resolution electron microscopy and profile analysis of powder neutron data has been used to determine the structure of the perovskite-related phase 12HBaCoO2.

TL;DR: A ternary phase of composition LnMgB5O10 has been found for Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, and Er.

TL;DR: The relationship entre structurales and magnetiques sont discutees as mentioned in this paper, and les valeurs de l'integrale d'echange calculees par la methode des developpements en serie de hautes temperatures and par la theorie des ondes de spin sont egles respectivement a −37 and −40 K.

TL;DR: In this paper, single-crystal measurements on hydrogen uranyl phosphate tetrahydrate, HUO 2 PO 4 ·4H 2 O (HUP), have confirmed that the high proton conductivity is a bulk characteristic.

TL;DR: In this paper, the magnetic and electric properties of V2O3+x were investigated by measurements of magnetic susceptibility, electrical resistivity, magnetotorque, Mossbauer of doped 57Fe, and NMR of 51V.

TL;DR: The LaOAgS is prepared by reaction of Ag2S and La2O2S, in the presence of a small proportion of iodine, between 580 and 640°C as discussed by the authors.

TL;DR: In this article, the new compounds YNi2P2 and LnNiP2 (Ln = La, Ce, Pr, Nd, Sm, Tb, Dy, Ho, Er, Tm) were prepared by sintering the elemental components in silica tubes.

TL;DR: In this paper, electrical, magnetic, and electron paramagnetic resonance (EPR) measurements have been made on crystals and powders of several quaternary chalcogenides of the type Cu2AIIBIVX4, where AII = Zn, Mn, Fe, or Co, BIV = Si, Ge, or Sn, and X = S or Se.

TL;DR: In this article, the theory and practice of a solid-state electrochemical technique which allows measurement of the chemical diffusion coefficient and partial conductivities of the mobile species in a mixed ionic-electronic conductor, as well as the equilibrium partial thermodynamic quantities, are described.

TL;DR: In this article, Bragg neutron diffraction studies have been carried out on the fluorite-type solid solutions Pb 1− x Bi x F 2+ x (0≤ x ≤ 0.50).

TL;DR: In this paper, the structure of an O2− conductor, the rhombohedral (a = 9.75A, α = 23.49°) low-temperature form of the solid solution Bi 1−x Sr x O 1,5− x 2 (x = 0.235, Z = 3) has been solved in space group R 3 m by means of Fourier synthesis and least-squares refinements.

TL;DR: In this paper, the transition of trimorphic BaSi 2 has been investigated up to 40 kbar and 1000°C by X-ray powder technique in quenched samples.

TL;DR: In this article, the synthesis and properties of new compounds and some solid solutions containing mixed octahedral (Me ) 6 clusters (Me = Mo, Ru, Rh) were reported.

TL;DR: In this paper, the authors reported the NMR relaxation times (T2 T1, and T1ϱ) and absorption spectra for the compounds H1.71MoO3 (red monoclinic) and H0.36MoO 3 (blue orthorhombic) in the temperature range 77 K < T < 450 K.

TL;DR: A nouvel oxyde double: Rb4Nb6O17·3H2O a ete synthethise en monocristaux as mentioned in this paper, a structure which is composed of feuillets constitues par deux plans d'octaedres NbO6 relies par la moitie des alcalins, and deux autres atomes de rubidium, situes en surface et entre les neuillet, sont entoures de molecules d'eau qui assurent seules la cohesion de

TL;DR: In this paper, the ionic conductivity of superionic conducting glasses in the pseudobinary system AgIAg 2 MoO 4 was measured in the temperature range 250-300 K as a function of composition of superion conducting glasses, and it was shown that only a fraction of the silver ions in glass contributes to ionic conduction.

TL;DR: In this paper, nonstoichiometric titanates, Kx(MyTi2−y)O4, have been synthesized for M=Mg, Zn, Ni, Cu, FeIII, MnIII with 0.70≤x≤0.90.

TL;DR: In this paper, the electronic structures of monomeric NbSe66−, dimeric Nb2Se99−, and hypothetical and real one-, two-, and three-dimensional structures composed of nbSe3 chains are examined in order to probe the nature of intra-and interchain interactions in this material.

TL;DR: In this paper, a complete and detailed structural description of sodium rare-earth orthophosphates, orthovanadates and orthoarsenates, with general formula Na3Ln(XO4)2 (Ln = rare earth, X = P, V, As), is presented.