Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface-enhanced Raman spectrometry for trace organic analysisTuan. Vo-Dinh, M. Y. K. Hiromoto, G. M. Begun, and R. L. MoodyCite this: Anal. Chem. 1984, 56, 9, 1667–1670Publication Date (Print):August 1, 1984Publication History Published online1 May 2002Published inissue 1 A…
A series of H2, Mg, VO, Co, Ni, Cu, Zn, Pd, Pt, Bi, and Pb 4, 4', 4'', 4'''-tetracumylpenoxy phthalocyanine, MPcXZ4, was synthesized. By vapor pressure osometry measurements of toluene solutions at 65 C, all MpcX4 compounds were dimeric complexes except PbPcX4 which is monomeric and Cu, Ni, Pd and PtPcX4 which form la…
Electrical oxidation of bis(ethylenedithiolo)tetrathiofulvalene (BEDT-TTF) 1 in a nitrogen saturated tetrahydrofurane solution containing (n-C4H10)4N+I3 as electrolyte results in the deposition of crystal plates of (BEDT-TTF)+ 2I3 (C10H8S8)2I3. These two dimensional crystals are triclinic, space group P1, a = 9.211(2)…
Abstract. From this brief review it appears that the interactions between calcium ions and cell walls play a key role in plant physiology. Calcium ions are involved in many mechnisms: for example, stabilization of cell wall structures, acidic growth, ion exchange properties, control of the activities of wall enzymes.…
Radiation-induced deterioration of fission reactor materials is dominated by displacement damage. In fusion reactors, the influence of (n, α) produced helium upon material deterioration is regarded to be of equal importance because of the high nuclear reaction rate caused by the high-energy fusion neutrons. In this re…
Raman spectroscopy studies of alkali and alkaline earth silicate glasses and melts are reviewed, and the major Raman bands observed are summarized. To realize the full potential of Raman spectroscopy will require a detailed understanding of their vibrational properties in relation to structure. A number of vibrational…
Since the discovery, by Meyer et al. [1] in 1975, of ferroelectric liquid crystals (FLCs) they remain the object of intensive investigations. In 1978 Pikin and Indenbom suggested a model for the thermodynamic description of the FLC physical properties, including the macroscopic response to the external fields [2]. Lat…
The crystalline modifications of carbon described in the literature are briefly reviewed. The publications in which new types of structures, differing from the diamond and graphite lattices, are proposed and discussed are analysed in detail. The geometrical-topological characteristics of the hypothetical modifications…
The authors report infrared and Raman spectroscopic investigations of single crystals of tris-sarcosine calcium chloride (TSCC), of the isomorphous tris-sarcosine calcium bromide (TSCB) and of mixed crystals with different chlorine-bromine concentration ratios x (for TSCC 1-x B x ) in the whole wavenumber region below…
The authors present evidence for the existence of a phase transition observed at 282K on warming in 1T-TaS 2 , through differential scanning calorimetry, in-plane electrical resistivity and Hall coefficient measurements. Some in-plane anisotropy is revealed, indicating that this transition may be mainly, though not wh…
Energy-dispersive x-ray diffraction studies have been made on BaTe to 410 kbar. It undergoes a first-order phase transition from the sodium chloride structure to the cesium chloride structure at 48 kbar. $P(V)$ data were obtained over the entire range. Optical studies indicated by extrapolation that metallization will…
This book is intended to fiber technologists, textile dealers, and textile salesmen a practical guideline to become acquainted with and to deepen their knowledge of the processes for the manufacture of film tapes, split-film yarns, and fibrillated film fibers.
The excited atom model using Delta SCF Hartree-Fock calculations is tested on Mg metal. It is found that the valence configurations of the ground, one- and two-core-hole states may be unambiguously determined simply from the values of the atom-metal XPS and Auger shifts. The above state energies suggest 3s 1 3p 1 , 3s…
The magnetic and crystallographic properties of several intermetallic compounds of Gd and Pd are studied and compared with the magnetic and crystallographic properties of the corresponding ternary hydrides obtained after charging with hydrogen gas. The mean magnetic coupling strength in the various intermetallic compo…
The electrooptic coefficients ra = r33 − (n2/n3)3 r23, rb = r33, − (n1/n3)3 r13 and rc = r13 − (n2/n1)3 r23, of Rb,ZnCl4 for light propagation directions along the three crystallographic axes a, b, and c are measured in the temperature range from 100 to 220 K (ni, i = 1, 2, 3, indices of refraction). In the incommensu…
High-pressure studies have shown that $\mathrm{K}{\mathrm{Ta}}_{1\ensuremath{-}x}{\mathrm{Nb}}_{x}{\mathrm{O}}_{3}$ crystals with small $x(\ensuremath{\approx}0.02)$ exhibit relaxational glasslike behavior rather than a static ferroelectric structural phase transition as previously thought. The results show a pressure…
The magnetic phase diagram for the system CoxNi1−xMnGe (0 ≦ x ≦ 1.0) is determined by ac susceptibility measurements under pressure up to 1.5 GPa. The temperature of the magnetic phase transition behaves similarly for all compounds examined: increasing external pressure causes the Néel or Curie temperatures to increas…
High-precision measurements of the in-plane resistivity of graphite have been made in a dilution refrigerator down to 20 mK. Below 5 K, the resistivity varies as a quadratic function of temperature, behavior consistent with the electron-hole scattering mechanism. The strength of the interaction is in good agreement wi…
Existing data on Na-rare gas and rare gas–rare gas dimer potentials have been used in a computer program to simulate the formation of trapping sites for Na atoms isolated in Ar and Xe solids. The dimer potentials have also been employed to calculate the matrix perturbed energy-level structure of the Na atoms to obtain…
X-ray diffraction and Rutherford backscattering (RBS) analysis were used independently to investigate the interface reaction of Cu-Al thin-film bilayers during in situ annealing in the temperature range 157–220 °C. The growth kinetics of the θ-CuAl2 phase were measured and were found to follow a diffusion limited proc…