Showing papers in "Materials Research Bulletin in 1997"

TL;DR: In this article, a nanoscale Y2O3:Eu phosphors have been prepared by glycine-nitrate solution combustion synthesis, and the particle size of resultant powders is much related to the combustion flame temperature, which can be controlled by adjusting the glycine tonitrate ratio.

TL;DR: The microwave dielectric properties of MNb2O6 compounds have been investigated as a function of M ions in this paper, and the temperature coefficient of the resonant frequency was found to correlate strongly with the M ions.

TL;DR: In this article, a new method for the synthesis of zinc oxide nanoparticles using ethanol-in-oil microemulsions with Zn-DEHSS (diethylhexyl sulfosuccinate) as surfactant was described.

TL;DR: In this paper, a hysteresis phenomenon is observed in vanadium oxo-alkoxide vanadium dioxide (V1 − xTixO2) films with TiO2-doped VO2 films.

TL;DR: In this paper, a straightforward combustion synthesis technique was proposed to prepare submicron iron-substituted strontium titanate, the Sr(Fe 0.5Ti0.5)O3 perovskite, using the corresponding metal salts-urea mixtures.

TL;DR: In this article, the surface morphology of polypyrrole films was investigated using atomic force and scanning electron microscopy techniques, and it was found that dopant concentration and synthesis time and subsequent heat treatment affect surface morphology.

TL;DR: In this paper, the effect of ZnO evaporation on the quality factor of complex perovskite compound La(Zn12Ti12)O3 (LZT) was examined.

TL;DR: In this paper, the phase transition of TiO{sub 2} thin films prepared by MOCVD was investigated using X-ray diffraction, scanning electron microscope, transmission electron microscope and secondary ion mass spectroscope.

TL;DR: The nucleating effect of titania during glass crystallization has been studied in a complex glassy system where some particular oxides, such as ZnO and MgO, which present chemical and thermodynamic affinity for titanium have been added.

TL;DR: In this article, the Ni-doped manganites Ln0.5Ca 0.5Mn1−xNixO3 (Ln = Pr, Nd, Sm) are compared to those of Cr-and Co-dope phases and their evolution is discussed, taking into consideration two antagonist factors: the average size of the interpolated cations and the size mismatch between Ln3+ and Ca2+.

TL;DR: In this paper, the structure of lanthanum oxysulfate (LaO) 2 SO 4 was studied with neutron, electron, and X-ray diffraction using the Rietveld refinement method.

TL;DR: In this paper, the trirutile-type structure of bismuth oxides with trirubile lattice parameters was obtained by low-temperature hydrothermal reaction using NaBiO{sub 3} {center_dot} nH{sub 2}O as a starting material.

TL;DR: In this article, the crystal structures of the 4, 6, and 8 molecules/uc loaded stoichiometric benzenates are investigated by X-ray powder diffraction profile refinements (Rietveld method) and energy minimization calculations (Buckham model).

TL;DR: In this article, the thermal expansion of BZS pyrochlore was determined to be 7.92 times 10{sup {minus}6} K{sup{minus}1} between 20--650 C while its dielectric properties showed a weak temperature dependence.

TL;DR: In this paper, powder X-ray diffraction was used to deduce that the structure of Li4.24Ti3O7 is closely related to the parent Ramsdellite.

TL;DR: The effect of substitution of BaZrO3 on the cation ordering in Ba(Mg13Ta23)O3 was studied using TEM and X-ray and neutron diffraction as mentioned in this paper.

TL;DR: In this article, the I2GeS3, a I2 IV VI3 semiconductor, has been prepared by solid state reaction of the constituent elements in vacuum-sealed quartz ampoules and structurally characterized using single crystal X-ray diffraction techniques.

TL;DR: In this paper, the properties of the K{sub 4}CdCl{sub 6} (Sr{sub 3}A{prime}RuO{sub 7} (A = Ca, Sr; A{ prime} = Li, Na) compounds have been studied by x-ray powder diffraction and magnetometry.

TL;DR: In this article, a high-energy planetary ball mill was used to synthesize mixtures of the elements with desired ratios in agate or Cu-Be vials for 60 to 180 min.

TL;DR: In this article, a BaZrO 3 (barium zirconium oxide) films were grown on single crystal substrates and spin-coated using an all-alkoxide route.

TL;DR: In this article, phase transformation sequences of SrOAl2O3 have been investigated at 1000 and 1250 °C through XRD technique along with emission signatures of Eu2+ and Eu3+.

TL;DR: In this paper, the structure and textural properties of TiO{sub 2}-SiO-sub 2 (Ti/Si = 0.2) composites prepared by sol-gel process in the presence of tartaric acid have been investigated.

TL;DR: In this article, Fourier transform infrared (FTIR) spectra were obtained from spinel-type lithium manganese oxides of composition LixMn2O4 with 0 < x < 2.4, prepared by both chemical and electrochemical means.

TL;DR: In this paper, the ball-milling technique was applied to amorphize the organic compounds sucrose and poly(ethylene terephthalate) and the results showed that the samples have been amorphized by milling.

TL;DR: The room temperature structure of Bi 2 Rh 2 O 7 − δ has been refined from neutron powder diffraction data, λ = 1.8857 A, cubic Fd 3m, a = 10.2763(1) A, V = 1085.23 A 3, Z = 8, R p = 0.040, R wp= 0.054, R exp = 0.,035 for 45 reflections as discussed by the authors.

TL;DR: In this article, two oxynitrides, SrWO2N and SrMoO2.5, were synthesized by ammonolysis of SrMO4 (M = W, Mo) at 900 and 800 °C, respectively.

TL;DR: In this article, the authors studied the hydrothermal synthesis of tetramethyl ammonium vanadium oxides that contain an additional transition metal, such as iron or zinc, in order to stabilize the layered structure of vanadium oxide for electrochemical redox reactions with lithium.

TL;DR: In this paper, a successful attempt to develop a gelcasting process to fabricate porous ceramics from different α-Al 2 O 3 powders with d 50 values of 16.14, 17.98, and 21.12 μm was reported.

TL;DR: The structure of Bi26Mo10O69 was solved using a combination of X-ray and neutron diffraction in this paper, and the final refinement was completed using high resolution neutron powder diffraction.