2,089 publications from this institution
Crystal chemistry and superconductivity in the copper oxides, J.B. Goodenough and A. Manthiram defects and microstructures in layered copper oxides, M. Hervieu, et al important common features of the cuprate superconductors - relation between the electronic structure and superconductivity, C.N.R. Rao design of new cuprate superconductors and prediction of their structures, T. Arima and Y. Tokura the modulation in bismuth cuprates and related materials, J.M. Tarascon, et al application of high-pressure and high-oxygen pressure to Cu-oxides, M. Takano, et al thermodynamics of Y-Ba-Cu-O system and related aspects, S.F. Pashin and Yu D. Tretyakov field modulated microwave absorption in high-temperature superconducting oxides, M. Puri and L. Kevan high temperature superconductor thin films by pulsed laser ablation, S.B. Ogale magnetic properties and field modulated microwave absorption of YBa2Cu3O7 thin films, C. Schlenker, et al.
No abstract is provided for this article.
Vapor-phase clusters from ethanol-water liquid mixtures of varying compositions, generated by sampling the binary vapor in equilibrium with the liquid mixture, were examined with the aid of a time-of-flight mass spectrometer. The variation of the mole fraction of the alcohol in the cluster beam with the liquid mole fraction was found to be identical to that of the surface concentration obtained from surface tension measurements. The results also compare well with those obtained from neutron reflection. The mass spectrometric method of determining surface compositions of liquid mixtures is more direct and model independent and is applicable over the entire range of compositions.
The book comprises a collection of reprints representing the current state of research in nanomaterials covering all the frontier areas. It will be an invaluable resource for new researchers and students, and could also serve as an inspiration for fresh ideas. Academics, students and practitioners in this subject will certainly benefit from the contents.
With the tactical integration of band edge energetics concepts in semiconducting films to reduce charge recombination and photocorrosion, an improvement in the photocurrent can be achieved by introducing CuO and Ni<sub>x</sub>P<sub>y</sub> into Cu<sub>2</sub>O films.
Review: 76 refs.
29Si and 31P NMR spectra have been studied in a series of lead phosphosilicate glasses. It is found that as the P2O5 content increases, the signal due to the six-coordinated silicon at − 212 ppm grows in intensity. Based on partial charge arguments it is suggested that the six-coordinated silicon atoms are surrounded by only phosphorus as second neighbours and are highly desheilded.
For Abstract see ChemInform Abstract in Full Text.
Careful investigations employing nonresonant microwave or rf absorption, Cu2+ EPR spectra, X-ray diffraction, and electron microscopy show that orthorhombic YBa2Cu3O7−δ is thermodynamically stable and monophasic when δ is 0.0–0.2 (T c = 90 K), 0.25 (T c = 80 K), and 0.5 (T c = 45 K). The last two compositions are associated with ordered oxygen-vacancy structures; in the δ = 0.0–0.2 regime, 3b = c. Compositions in the range δ = 0.3–0.4 (T c = 60 K) do not appear to be thermodynamically stable and decompose on annealing, suggesting thereby that the so-called 60 K superconducting phase in the YBa2Cu3O7−δ system may not be genuine. 123 cuprates prepared with excess CuO often show fringes of 124 in lattice images. Both 124 and 247 cuprates prepared by the ceramic method in a flowing oxygen atmosphere frequently show intergrowths of each other or with 123. Such epitaxial relationships between 123, 124, and 247 cuprates could be of significance with respect to their superconducting properties. Both 124 and 247 cuprates undergo thermal decomposition to give 123 and CuO.
No abstract is provided for this article.
Core-level binding energies of the component metals in bimetallic clusters of various compositions in the Ni−Cu, Au−Ag, Ni−Pd, and Cu−Pd systems have been measured as functions of coverage or cluster size, after having characterized the clusters with respect to sizes and compositions. The core-level binding energy shifts, relative to the bulk metals, at large coverages or cluster size, ΔEa, are found to be identical to those of bulk alloys. By substracting the ΔEa values from the observed binding energy shifts, ΔE, we obtain the shifts, ΔEc, due to cluster size. The ΔEc values in all the alloy systems increase with the decrease in cluster size. These results establish the additivity of the binding energy shifts due to alloying and cluster size effects in bimetallic clusters.
No abstract is provided for this article.
No abstract is provided for this article.
