Showing papers in "Materials Research Bulletin in 1988"
TL;DR: In this article, the crystal structure of LiSbWO6 was solved from X-ray powder diffraction data and the structure was refined using Rietveld profile refinement principles.
2,325 citations
TL;DR: In this article, the ionic and electronic conductivities of mixed conductive La1−xSrxCo1−yFeyO3−δ were separately measured by means of fourprobe ionic dc and ordinary four-probe dc techniques, respectively.
575 citations
TL;DR: The structure of the title compound, Sr8Ca6Cu24O41 and Sr14Cu 24O41, has been determined by x-ray, single-crystal diffraction techniques as discussed by the authors.
305 citations
TL;DR: In this article, the Raman spectra of single crystal nickel ferrite and polycrystalline iron, nickel and manganese ferrites have been recorded at room temperature and 4.2K.
256 citations
TL;DR: In this article, single crystal X-ray studies on several crystals grown from different alkaline earth/metal oxide-cuprate melts reveal a common orthorhombic F-centered subcell of a = 11.3 A, b = 13.0 A and c = 3.9 A.
208 citations
TL;DR: The results of experiments on diamond micro single crystals (∼10μm) and polycrystalline diamond films by microwave plasma assisted chemical vapor deposition are presented in this paper, where the optimal conditions for diamond growth were found in relation to maximum growth rate and exceptional surface phenomena appearing at temperatures close to 1000°C.
178 citations
TL;DR: In this paper, a chemical kinetics model for the deposition of diamond and graphite from hydrocarbon gases is presented, based on the work of Derjaguin, Fedoseev and coworkers.
142 citations
TL;DR: In this paper, a superstructure along the direction of the perovskite cubic unit cell in lead magnesium niobate ceramics has been studied by high resolution electron microscopy (HREM).
98 citations
TL;DR: In this paper, the structure of La 3 Li 5 M 2 O 12 (M=Nb, Ta) has been determined by a single crystal X-ray diffraction technique.
94 citations
TL;DR: In this paper, a simple technique is presented for the production of films of transition metal disulfides such as MoS 2, WS 2, FeS 2, or RuS 2 by the reaction of metal carbonyls in an organic solvent.
90 citations
TL;DR: In this article, the structure of the BaTaO2N and BaNbO 2N perovskites has been refined by profile analysis of time-of-flight neutron diffraction data.
TL;DR: Several variations of the sol-gel process leading to polycrystalline BaTiO3 formation were explored and compared in this article, leading to the discovery of barium-titanium isopropoxide single crystals with a fixed Ba:Ti stoichiometry of [1:1].
TL;DR: The structure of Bi 2 O 2 CO 3 has been investigated using powder neutron diffraction as discussed by the authors, and not all observed peaks could be indexed on the previously reported tetragonal unit cell, and a larger orthorhombic cell was adopted (Pna2 1, a=5.468(1), b=27.32(2), c =5.68(1) A ).
TL;DR: In this article, a misfit layer structure consisting of two-atom thick layers of SnS with distorted NaCl type structure and three-atom-thick sandwiches of NbS2 was described.
TL;DR: In this paper, the dielectric properties of the (Zr0,8Sn0,2)TiO4 ceramic with a homogeneous phase are investigated and two kinds of TiO2 phase of raw material in comparison show that anatase phase is clearly better than rutile phase for higher unload Q. Among these additives, CdO and La2O3 are regarded as a firing agent and Ni as a grain growth enhancer.
TL;DR: In this paper, a structural model is proposed for the oxidation and solid-state transformation of Ti3O5 to TiO2-II, controlled by the close match between (110)Ti3O2 and (101)TiO2 atomic layers.
TL;DR: In this article, new stannides with formula MMn 6 Sn 6 (M = Sc, Y, Sm, Gd-Tm, Lu) and ScFe 6 Sn6 have been prepared at 973 K.
TL;DR: In this article, the formation of ABiNb 2 O 7 compositions in layered perovskite structure in preference to pyrochlore structure is discussed, and the protonated oxides exhibit proton conductivity in the range 10 −6 ohm −1 cm −1 at room temperature.
TL;DR: In this article, a thermogravimetric (TG) curve is presented for heating Ba 2 YCu 3 O 7 up to 1000°C in CO 2, CO, several mixtures of CO 2 in O 2, and in wet O 2 and wet CO 2.
TL;DR: In this paper, the LaCrS3 and MM′S3 phases were characterized and the resistivity measurements indicated a metallic type behavior with an orthorhombic symmetry.
TL;DR: In this paper, the growth of ferroelectric Sr 2−x Ca x NaNb 5 O 15, x = 0.1 or 0.2, solid solution crystal by the Czochralski technique has been successful.
TL;DR: In this article, the crystal structure of Re 6 Se 8 octahedral cluster was determined and the electrical and optical properties showed that the compound is a semiconductor with an optical gap of about 0.83 eV.
TL;DR: In this paper, a quasi-ordered trirutile structure of LiNbWO6 was proposed, and the structure of α and β-LiNbwO6 were solved from powder diffraction data analyzed by a Rietveld method.
TL;DR: In this article, single crystals of La 2 (C 2 O 4 ) 3 9.5H 2 O have been grown in a silica gel by "in situ" generation of oxalic acid.
TL;DR: In this article, a simple horizontal reactor was used to prepare 2000 A films of alumina on silicon substrates by the thermal decomposition of aluminum tri-isopropoxide at temperatures between 350° and 500°C.
TL;DR: In this paper, the electrical properties, conductivity and thermoelectric power of perovskites LnWOxN3−x were compared to those of oxygen tungsten bronzes and differences are explained by the nature of the elements on the anionic sites and by structural considerations.
TL;DR: In this paper, it is argued that an internal electric field parallel to the c-axis confines the redox reactions associated with oxygen intercalation/disintercalation to the interalation layer, coulombic interactions between intercalated oxygen introduce oxide-ion ordering within/between b-axis chains as well as ordering onto the baxis.
TL;DR: In this article, the ternary phase diagrams LnNi 2 As 2 (LnN 2 A 2 ) and LaNi 2 B 2 were investigated and the results showed that they exhibit a metallic conductivity and a magnetic ordering at low temperature when Ln = Ce, Pr, Sm, Eu.
TL;DR: Amorphous titanium sulfides were synthesized by the direct reaction between dry organic sulfurizing agents and TiCl 4 as discussed by the authors, and a detailed discussion is given about the reactivity of TiCl4 with each sulfurizing agent.