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Equipo Editorial1985-09-01Materiales de Construccion
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Editorial
Further insight into magnetostructural correlations in binuclear copper(II) species related to methemocyanin: x-ray crystal structure of 1,2-.mu.-nitrito complex
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFurther insight into magnetostructural correlations in binuclear copper(II) species related to methemocyanin: x-ray crystal structure of 1,2-.mu.-nitrito complexVickie McKee, Maruta Zvagulis, and Christopher A. ReedCite this: Inorg. Chem. 1985, 24, 19, 2914–2919Publication D…
Synthesis, structure, and spectroscopic and magnetic properties of lutetium(III) phthalocyanine derivatives: LuPc2.CH2Cl2 and [LuPc(OAc)(H2O)2].H2O.2CH3OH
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, structure, and spectroscopic and magnetic properties of lutetium(III) phthalocyanine derivatives: LuPc2.CH2Cl2 and [LuPc(OAc)(H2O)2].H2O.2CH3OHAndre De Cian, Mehdi Moussavi, Jean Fischer, and Raymond WeissCite this: Inorg. Chem. 1985, 24, 20, 3162–3167Publication…
Free radical and free atom reactions in the sonolysis of aqueous iodide and formate solutions
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFree radical and free atom reactions in the sonolysis of aqueous iodide and formate solutionsEdwin J. Hart and Arnim HengleinCite this: J. Phys. Chem. 1985, 89, 20, 4342–4347Publication Date (Print):September 1, 1985Publication History Published online1 May 2002Published ini…
Least-squares absolute-structure refinement. Practical experience and ancillary calculations
The least-squares refinement of non-centrosymmetric crystal structures as inversion twins is presented. It is shown that the absolute-structure (twin) parameter x may be used to define the chirality or polarity of untwinned crystals. The method has been applied to 20 compounds. The least-squares refinement of the abso…
Hydrogen bonding in polymers: infrared temperature studies of an amorphous polyamide
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydrogen bonding in polymers: infrared temperature studies of an amorphous polyamideDaniel J. Skrovanek, Stephen E. Howe, Paul C. Painter, and Michael M. ColemanCite this: Macromolecules 1985, 18, 9, 1676–1683Publication Date (Print):September 1, 1985Publication History Publ…
THE Si:C:N RATIO OF MARINE DIATOMS: INTERSPECIFIC VARIABILITY AND THE EFFECT OF SOME ENVIRONMENTAL VARIABLES1
ABSTRACT The variability of marine diatom Si:C and Si:N composition ratios was examined to assess their utility as ecological conversion factors. Twenty‐seven diatom species grown under an 18:6 h LD cycle and sampled at the end of the light period gave mean ratios, by atoms, of 0.13 ± 0.04 and 1.12 ± 0.33 for Si:C and…
Structural ordering below Tcin KDP and DKDP
High-resolution neutron diffraction studies have been carried out on KH2PO4 at 1K, 10K and 20K below Tc (123K), and on 95% deuterated K(DxH1-x)2PO4 at 2K, 6K and 10K below Tc (224K). The results show that in both cases the structural ordering is homogeneous: the temperature dependence of the proton (deuteron) ordering…
X-ray induced luminescence, photoluminescence and thermoluminescence of Bi4Ge3O12
X-ray induced luminescence, photoluminescence and thermoluminescence of nominally pure Bi 4 Ge 3 O 12 crystals are studied within the 12K-295K temperature range. The broad emission band reported by other workers for radio- and photoluminescence is observed to present some structure. thermoluminescence spectra exhibit…
Interaction effects and thermoelectric power in low-temperature hopping
The effect of electron-electron interactions on the thermoelectric power for hopping transport in two and three dimensions is calculated in the low-temperature limit. While the conductivity requires a very precise measurement to extract a temperature exponent with enough precision to determine the role of the interact…
Direct and Exchange Contributions in Inelastic Scattering of Spin-Polarized Electrons from Iron
I report on the first complete experimental characterization of elastic and inelastic two-electron scattering processes in a ferromagnet. By explicit measurement of the spin polarization of primary and scattered electrons the contributions of all four partial scattering rates are determined. The Stoner continuum in Fe…
Excitation of Hydrogen Motion inside a Nickel Vacancy
By means of the ion-channeling technique, we have shown the existence of a very low-energy (\ensuremath{\sim}3 meV) excitation for deuterium impurities trapped to vacancies in nickel. The excitation is associated with a change of the D location from near octahedral to near tetrahedral. On the basis of calculations of…
New Experimental Findings in Two-Dimensional Dendritic Crystal Growth
Tip-stable, tip-oscillating, and tip-splitting types of dendrites were observed experimentally in a two-dimensional supersaturated N${\mathrm{H}}_{4}$Cl solution. The relation between the tip velocity $V$ and the tip curvature $K$ were measured for the tip-stable type. It was found that $V$ is proportional to $K$ inst…
Investigation of the structure of molten Ge15Te85 in dependence on temperature
The structure of the eutectic system Ge15Te85 in the liquid state is studied in the temperature range from the melting point (648 K) up to 873 K. Partial structure factors and pair correlation functions (gij(r)) for the TeTe and the GeTe pairs are determined for the first time by the combination of data from neutron…
Magnetostriction of Ni-Zn and Co-Zn ferrites
The magnetostriction of polycrystalline mixed nickel-zinc and cobalt-zinc ferrites of different compositions are studied as a function of composition, magnetic field, and temperature, using the strain gauge method. At room temperature it is observed that the values of saturation magnetostriction in both the ferrite sy…
Possibility of observing quantum size effects in the electromagnetic absorption spectrum of small metal particles
The possibility of observing quantum size effects in very small metal particles by absorption spectroscopy is reexamined. According to the Gor'kov-Eliashberg theory, nonquadratic frequency dependence of the absorption coefficient persists at sufficiently low frequencies even when there is a size distribution.
Dielectric and Dilatometric Studies on Ferroelectric {N(CH3)4}2CoCl4
Dielectric properties of ferroelectric {N(CH 3 ) 4 } 2 CoCl 4 were measured in detail, covering its all transition points. The triple D - E hysteresis loop in Phase III (4.6∼7.1°C, C 2 v 9 - P 2 1 c n ) was ascertained. The lattice distortion of this ferroelectric was determined along the three crystallographic axes b…
Charge-density waves with electron-electron interactions
Charge-density waves (CDW) in one-dimensional conductors are studied by treating the electron-phonon interaction in the adiabatic limit, while weak-coupling electron-electron interactions are solved by renormalization-group methods. An exponent $\ensuremath{\delta}$ defines a renormalization of the effective electroni…
Pressure dependence of the electron-phonon interaction and Fermi-surface properties of Al, Au, bcc Li, Pb, and Pd
The electrical resistance of Li, Pd, Au, and Pb is measured as a function of temperature and pressure in the region -20 \ifmmode^\circ\else\textdegree\fi{}C to +30 \ifmmode^\circ\else\textdegree\fi{}C and 0--1.3 GPa. Self-consistent linear muffin-tin orbital band-structure calculations of these elements and of Al are…