Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
A systematic study of magnetocrystalline anisotropy of R2Fe14B tetragonal compounds with various rare-earth elements (R) has been carried out at room temperature by the pulse method. The anisotropy fields of Y2Fe14B and Nd2Fe14B compounds are 3.1 and 12 MA/m, respectively. The maximum anisotropy field of 28 MA/m was o…
We describe the most efficient semiconductor/liquid junction solar cell reported to date. Under W-halogen (ELH) illumination, the device is a 14% efficient two-electrode solar cell fabricated from an n-type silicon photoanode in contact with a nonaqueous electrolyte solution. The cell′s central feature is an ultrathin…
We have obtained polarized Raman spectra for vitreous silica densified at 3.95 GPa and 530 °C. The glass spectra show considerable changes on densification, which are discussed in terms of the observed reduction in average intertetrahedral bond angle and the central force model for connected networks. The results of t…
We have analyzed angle-resolved x-ray photoelectron spectroscopy data and found that large intensity enhancements along internuclear axes are due to forward-direction focusing of the electron beam by an attractive potential. Away from the internuclear axes, we found secondary peaks whose intensity is dominated by a st…
Slow crack growth data, molecular-orbital calculations, and vibrational spectroscopy results are used to develop an atomistic model for environmentally controlled fracture of silica glass. The model is based on chemically active bond defects generated by the strain field of the crack tip. Molecular-orbital results sug…
Optical reflectance studies of the $c$ face of pyrolytic boron nitride were carried out at room temperature in the photon energy range 0.45---10 eV. A Kramers-Kronig analysis was performed to determine the in-plane real (${\ensuremath{\epsilon}}_{1}$) and imaginary (${\ensuremath{\epsilon}}_{2}$) dielectric functions.…
A new, highly multiplexable liquid crystal display is described, which has a superior image quality than a twisted nematic display multiplexed at the same high level. The display cell consists of a chiral-doped nematic layer with tilted boundaries and a twist angle of ∼270°. It operates in a birefringent optical mode…
High-resolution vanadium $K$-edge absorption spectra have been recorded for a number of selected vanadium compounds of known chemical structure with use of the synchrotron radiation available at the Stanford Synchrotron Radiation Laboratory (SSRL). The compounds studied include the oxides VO, ${\mathrm{V}}_{2}$${\math…
The phenomenon of cavitation occurs when a tension, applied to a liquid, exceeds a certain critical value known as the breaking tension or cavitation threshold. The present review article considers various ways in which liquids have been subjected to tension and how the accompanying cavitation has been studied. The im…
A recently developed Landau description of short-range icosahedral order in supercooled liquids and metallic glasses is used to calculate density correlation functions in these systems. The theory predicts frustration-broadened peaks in the structure factor, at positions determined by the symmetries of an ideal, curve…
We have observed a metallic solid (Al-14-at.%-Mn) with long-range orientational order, but with icosahedral point group symmetry, which is inconsistent with lattice translations. Its diffraction spots are as sharp as those of crystals but cannot be indexed to any Bravais lattice. The solid is metastable and forms from…
Article MetricsDownloadsCitationsNo data available.0246JulAugSepOctNovDec970Total6 Months12 MonthsTotal number of downloads for the most recent 6 whole calendar months.
1 Introduction.- 1.1 Scope of the Book.- 1.2 General Remarks on the Use and the Behavior of Ceramic Materials.- 1.3 The History of Alumina.- 1.4 Preceding Summarizing Literature on Alumina.- 2 Physical Properties.- 2.1 Structure.- 2.2 Thermal Properties.- 2.3 Diffusion.- 2.3.1 General Remarks on Diffusion Phenomena in…
We introduce electrochromic coatings for use on "smart windows" with dynamic control of radiant energy. Applications, operating principles, materials options, and device configuration are briefly reviewed. We then focus on electrochromic WO3 and investigate crystalline films by computations aimed at assessin…
Article Structural and antiferroelectric phase transitions in betaine phosphate, (CH3)3NCH2COO · H3P04 was published on November 1, 1984 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 168, issue 1-4).
Domain modifications due to compressive stress applied perpendicular to the rolling direction (RD) of coated HI-B sheets are discussed. Both single and stacked sheets were investigated. Compressive stress normal to the sheet surface, as well as compressive stress within the sheet plane, was found to cause refinement o…
Article Crystal structure, polarity and morphology of 4-0-β-D-galactopyranosyl-ɑ-D-glucopyranose monohydrate (ɑ-lactose monohydrate): a redetermination was published on November 1, 1984 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 168, issue 1-4).
Abstract not Available.
Neutron activation technique was used to measure the amounts of I, Ag and Na elements in zeolite samples. The samples were nonradioactive before the activation analysis; this facilitated various operations to investigate the chemical form of the sorbed iodine. It was found that the Ag+ ions positioned in three types o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA novel organic photochromicS. D. Cox, C. W. Dirk, F. Moraes, D. E. Wellman, Fred Wudl, M. Soltis, and C. StrouseCite this: J. Am. Chem. Soc. 1984, 106, 23, 7131–7133Publication Date (Print):November 1, 1984Publication History Published online1 May 2002Published inissue 1 No…