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。
The optical absorption and fluorescence spectra of trivalent thulium in single crystals of yttrium oxide and the absorption spectrum of pure thulium oxide, are investigated. All the 4f12 electronic energy levels except the 1S0 level are identified. The three Slater Fk parameters and the spin—orbit parameter ζ, giving…
Room-temperature microwave ferrimagnetic resonance measurements of the large uniaxial magnetocrystalline anisotropy fields (Han) of two compositional series of hexagonal ferrimagnetic oxides are reported. Han was found to increase rapidly in the Al-substitution series (SrO·xAl2O3·(6−x)Fe2O3) from 19.3 to 53.4 kOe as x…
The Verdet constants of a number of glasses have been measured with the object of studying the Faraday effect in glass. The Verdet constant was measured for three types of glasses: (1) optical glasses, where the Verdet constant correlates well with the reciprocal dispersion; (2) diamagnetic glasses, where glasses whic…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymerization of Drying OilsHerman WexlerCite this: Chem. Rev. 1964, 64, 6, 591–611Publication Date (Print):December 1, 1964Publication History Published online1 May 2002Published inissue 1 December 1964https://pubs.acs.org/doi/10.1021/cr60232a001https://doi.org/10.1021/cr6…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOctacoordinate Chelates of Lanthanides. Two Series of CompoundsHerbert. Bauer, Joseph. Blanc, and Daniel L. RossCite this: J. Am. Chem. Soc. 1964, 86, 23, 5125–5131Publication Date (Print):December 1, 1964Publication History Published online1 May 2002Published inissue 1 Dece…
Abstract “Compulsive” exchange takes place between a barium‐soil and magnesium sulphate solution because Ba 2+ ions are removed from solution by precipitation of barium sulphate. This phenomenon provides a basis for the very convenient routine method for cation‐exchange capacity determination in soils described here.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Water-insoluble Polyanionic Derivative of Trypsin. II. Effect of the Polyelectrolyte Carrier on the Kinetic Behavior of the Bound Trypsin*Leon Goldstein, Yehuda Levin, and Epharaim KatchalskiCite this: Biochemistry 1964, 3, 12, 1913–1919Publication Date (Print):December 1,…
Not available
Not available
Not available
Not available
Not available
Thermal conductivity measurements on high-purity SiC and impure Si and SiC have been made over the temperature range from 3° to 300°K. These results show that the thermal conductivity K, of the highest purity SiC is intermediate between those of pure Si and pure diamond, and at 300°K is greater than that of copper. Th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and Fluorescence of Some Trivalent Lanthanide ComplexesL. R. Melby, N. J. Rose, E. Abramson, and J. C. CarisCite this: J. Am. Chem. Soc. 1964, 86, 23, 5117–5125Publication Date (Print):December 1, 1964Publication History Published online1 May 2002Published inissue…
Measurements have been made of the crystal-field splitting of the $^{7}F_{J}$ energy levels of the $4{f}^{6}$ configuration of the ${\mathrm{Sm}}^{2+}$ ion which is dissolved in a number of alkali-halide lattices. Crystal-field term assignments were made from the results of polarized-emission measurements. Observed cr…
Luminescence observed upon low-temperature x-ray excitation of alkali-halide crystals has been identified as due to radiative electron-hole recombination in the perfect lattice. In KCl the emission spectrum is a single band, while in KBr, KI, and NaCl there are two bands. In crystals containing self-trapped holes, opt…
The use of the Kramers-Kronig relation in the analysis of reflectance data is discussed briefly. The recent results of Walker and Osantowski for diamond are reanalyzed and found to be in some error. New data are presented which appear more consistent with the expected optical behavior of diamond.
New high pressure forms of the sesquioxides of holminum, erbium, thulium, ytterbium, lutetium, and yttrium have been obtained by exposure of the C-type sesquioxides to pressures between 25 and 40 kilobars and temperatures between 900 degrees and 1020 degrees C. X-ray diffraction analysis shows that these new high-pres…
Abstract The type of stress pulse produced when a liquid mass strikes a solid at high velocity is first examined. Compressible behaviour, giving rise to a sharp peak of pressure, is found to occur in the initial stages of the impact. The duration of this peak depends on the dimensions and impact velocity of the liquid…