Showing papers in "Journal of Solid State Chemistry in 2012"

TL;DR: The Modern Theory of Polarization as discussed by the authors defines the spontaneous polarization of a periodic solid and provides a route for its computation in electronic structure codes through the Berry phase, introduced in a simple qualitative discussion.

TL;DR: In this paper, the concept of functional octahedral rotations is introduced and the challenges for materials chemistry and the possibilities for new rotation-driven phenomena in multifunctional materials are explored.

TL;DR: In this article, the effect of annealing cycle on the crystalline structure of the CuO nanofibers was analyzed and observed that the decrease in crystallite size with an increase in the dwelling time improved the orientation of the CUO crystallite.

TL;DR: In this paper, a model is proposed, showing that randomly distributed potential barriers (such as those found in polycrystalline films) may lead to the simultaneous occurrence of energy filtering and carrier localization, which may also affect the thermoelectric properties of a material.

TL;DR: In this article, the authors collected and analyzed the recent experimental and theoretical results on Bi M O 3 with M =Al, Sc, Ti, V, Cr, Mn, Co, Ni, Cu, Ga, In, and Rh.

TL;DR: In this paper, a co-precipitation method was used to prepare Zn-Al-NO 3 -LDH at different Zn 2+ /Al 3+ molar ratios (2, 3, 4, 5 and 6) and pH value of 7.5.

TL;DR: In this paper, a spray deposition of the CIGS light absorber layers, without high temperature selenization, has enabled up to 3.1% power conversion efficiency under AM 1.5 solar illumination.

TL;DR: In this paper, a one-step synthesis of a nanocomposite of goethite (α-FeOOH) nanorods and reduced graphene oxide (RGO) using a solution method was reported.

TL;DR: In this article, a ZnS-Graphene nanocomposite was prepared by a facile one-step hydrothermal method using zinc nitrate hexahydrate, ethylenediamine and carbon disulfide as precursors, graphene oxide as a template.

TL;DR: The phase equilibria in the ternary Ca-Co-O system have been studied by thermal analysis (DSC/DTA, TGA), X-ray diffraction of quenched samples and low temperature heat capacity measurements.

TL;DR: Li2B3O4F3 was obtained by a solid state reaction from LiBO2 and LiBF4 at 553 K and crystallizes in the acentric orthorhombic space group P212121 (no. 19) with the cell parameters a=4.8915(9), b=8.734(2), and c=12.301(2) A as discussed by the authors.

TL;DR: In this paper, the 1S0-3P1 (A band) and 1S 0-1P 1 (C band) transition energy of Bi3+ ion in dozens of different compounds has been gathered and analyzed.

TL;DR: In this article, BaGa{sub 2}GeX{sub 6}(X=S, Se) is constructed by the parallel alignment of Ga or Ge tetrahedra along the c-aix.

TL;DR: A suitable relationship between free-cation polarizability and electronegativity of elements in different valence states and with the most common coordination numbers has been searched on the basis of the similarity in physical nature of both quantities.

TL;DR: In this paper, a room-temperature modification of potassium oxyfluorotungstate, G2-K3WO3F3, has been prepared by lowtemperature chemical route and single crystal growth.

TL;DR: The electronic properties of Bi{sub 2}MO{sub 6} (M=Mo and W) are studied by using the first-principles calculations in this paper.

TL;DR: In this article, the structural evolution of the orthorhombic phase with space group Pbnm and the rhombohedral phase with R 3 ¯ c structure of LaFeO3 is reported in terms of lattice parameters, thermal expansion coefficients, atomic positions, octahedral rotations and polyhedral volumes.

TL;DR: In this article, the SFO/Ni 0.5 Fe 2 O 4 (SFO) composite ferrite nanofibers with diameters about 120nm have been prepared by the electrospinning and calcination process.

TL;DR: WO 3 with various morphologies and crystal phases were prepared via a hydrothermal process in the presence of different Na 2 SO 4 concentrations in this article, which indicated that the preferred growth face ((200) crystal plane) of hexagonal WO 3 could adsorb abundant Na +, which induced the WO3 growing along [001] crystal direction to form nanorods.

TL;DR: Pompon-like NaLa(MoO4)2:Dy3+ phosphors have been successfully prepared via a hydrothermal method using ammonia as pH value regulator as discussed by the authors.

TL;DR: In this article, a new method was developed for the quantitative determination of amino groups in surface modified mesoporous materials by the ninhydrin reaction, and a good correlation was found between the amino content of the MCM-41 materials determined by the Ninhydrin method and their ibuprofen adsorption capacity.

TL;DR: In this article, high quality Gd-doped polycrystalline samples were synthesized by solid-state reaction method and the crystal structure of the samples can be described by the space group of Pbnm (No. 62).

TL;DR: In this paper, aqueous ferrofluids of iron oxide nanoparticles were synthesized using a hydrothermal-reduction method with citric acid as reductant.

TL;DR: One-step synthesis of lightly doped porous silicon nanowire arrays was achieved by etching the silicon wafer in HF/AgNO3/H2O2 solution at room temperature.

TL;DR: In this paper, a co-precipitation method using nitrates with precipitant of ammonium hydrogen carbonate has been used to synthesize YAG nanopowders with an average grain size of 30nm.

TL;DR: In this article, the structural determination of the CeO{sub 2}/Gd{sub 1-x}Gd {sub x}O {sub 2-x/2} powder samples with x ranging between 0 and 1 have been synthesized by coprecipitation of mixed oxalates and subsequent thermal decomposition in air at 1200 Degree-Sign C followed by slow cooling.

TL;DR: In this article, three complete solid solutions between the layered phases P2-Na2M2TeO6 (M=Co, Ni, Zn) have been prepared by conventional solid state method and investigated through X-ray diffraction, magnetism and optical measurements.

TL;DR: In this article, the formation and growth of α-MnO 2 nanorods are discussed based on the H 2 bubbling on the cathode surface, and the mechanism of formation and the growth is proposed and discussed.

TL;DR: In this paper, the role of several bismuth doping amounts in Mg2Si were investigated (mg2si:Bi=1:x for x=0.01, 0.02 and 0.04 m ratio).

TL;DR: In this paper, the crystal structure of the Pmnb polymorph of Li2MnSiO4 was characterized by Rietveld refinement of structural models using high resolution synchrotron X-ray and neutron powder diffraction data.