Materials Literature
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Revue de resultats experimentaux et theoriques concernant l'effondrement de bulles de cavitation pres de frontieres rigides, de surfaces libres, d'interfaces entre deux fluides de densites differentes et de materiaux composites
The various origins of a frequency-dependent conductivity in amorphous semiconductors are reviewed, stressing particularly recent advances and the influences that factors such as correlation and non-random spatial distributions of electrically active centres can have on the a.c. conductivity. A comprehensive survey is…
A numerical Kramers-Kronig analysis is used to predict the refractive-index perturbations produced in crystalline silicon by applied electric fields or by charge carriers. Results are obtained over the1.0-2.0 \mum optical wavelength range. The analysis makes use of experimental electroabsorption spectra and impurity-d…
In a comprehensive work with important implications for tuning theory and musicology, Easley Blackwood, a distinguished-composer, establishes a mathematical basis for the family of diatonic tunings generated by combinations of perfect fifths and octaves. Originally published in 1986. The Princeton Legacy Library uses…
``Electron-Electron Interactions in Disordered Systems'' deals with the interplay of disorder and the Coulomb interaction. Prominent experts give state-of-the-art reviews of the theoretical and experimental work in this field and make it clear that the interplay of the two effects is essential, especially in low-dimen…
Oscillations in an electronic gap formed by a charge-density wave are described in terms of Raman-active amplitude modes. In a multi-phonon system the authors find the Raman shifts and their intensity ratios in terms of a parameter lambda which contains all effects of electron-phonon, electron-electron and electron-di…
The physical background of the method of temperature-modulated steady-state space-charge-limited currents is described. It is based on the measurement of the current-voltage characteristics together with the current activation energy-voltage dependence in the space-charge regime, i.e. the current and its charge due to…
Light induced changes of absorption in semiconductor-doped glasses are studied on the femtosecond and picosecond time scale. Extremely rapid absorption recovery times of 200 fs are found when carriers are excited with large excess energy (500 meV) above the absorption edge of the semiconductor-doped glasses. Excitatio…
Phonon dispersion curves for the [110] 〈1\ifmmode\bar\else\textasciimacron\fi{}10〉 ${\mathrm{TA}}_{2}$ branch in ${\mathrm{Ni}}_{\mathrm{x}}$${\mathrm{Al}}_{100\mathrm{\ensuremath{-}}\mathrm{x}}$ (50<x<65) reveal a pronounced minimum whose position in q space is composition dependent but whose frequency does not…
Elastic and inelastic neutron scattering experiments have been carried out to investigate magnetic structure and magnetic excitations in anisotropic antiferromagnet FeTiO 3 . A detailed structure analysis shows that the spin direction of each Fe 2+ ion is oblique away from the hexagonal c axis by (2.2+or-0.2) degrees…
The electrical properties of thin polycrystalline films of p-type CuInSe2 grown from stoichiometric and from copper excess charges are studied in the temperature range 77 to 300 K. It is found that the effect of excess copper is to short the grain boundaries (up to 2% excess copper) thereby improving the conductivity…
We present a new analysis of a series of measurements of the static and time-dependent interactions in the angular correlation of \ensuremath{\gamma} rays from $^{111}\mathrm{Cd}$ following electron capture in $^{111}\mathrm{In}$, in ${\mathrm{InCl}}_{3}$, ${\mathrm{InCl}}_{2}$, ${\mathrm{InCl}}_{1.8}$, ${\mathrm{InCl…
This letter discusses the synthesis of CoNx films using rf diode reactive sputtering. It describes the properties of crystal structures in CoNx thin films and in particular, the post-annealing effects on the crystal structures of CoNx. The CoNx films have the crystal structures of ε-Co(hcp), α-Co(fcc), α′-Co(fcc) as a…
Cristallisation dans le systeme quadratique, groupe P4 1 et affinement jusqu'a R=0,048. La structure est constituee d'anions TeO 3 2− legerement deformes relies par des cations Pb 2+
The long-term photocurrent decays following the steady-state photoexcitation have been reported in amorphous ${\mathrm{As}}_{2}$${\mathrm{Se}}_{3}$, ${\mathrm{As}}_{2}$${\mathrm{S}}_{3}$, GeSe, ${\mathrm{GeSe}}_{2}$, and ${\mathrm{GeS}}_{2}$ films. The photocurrent decays empirically as exp(-${\mathrm{Ct}}^{\ensuremat…
The empirical linear combination of atomic orbitals approach toward calculating band structures is extended to include third-nearest neighbors, and used to calculate both the conduction and valence bands of a wide range of semiconducting materials. Using these bands, we calculate the dispersion of the dielectric const…
Optical second harmonic generation has been used to study the polymerization of a monolayer of vinyl stearate or octadecyl methacrylate spread at the air/water interface. Rapid polymerization occurred when monolayers were irradiated with ultraviolet light, while some slower polymerization occurred when certain redox i…
The static structure factor and pair distribution function of high-density amorphous ${\mathrm{D}}_{2}$O ice, which is made by apparently melting ice I at 10.5 kbar and 77 K, have been determined by neutron diffraction at 17 K and zero pressure. The pair distribution function, scaled to 10 kbar, is compared with the s…
Galvanic pairs of varying area ratios have been exposed to seawater on the Swedish west coast for one year. In most couples the cathodic member has been the highly alloyed stainless steel 254 SMO and the anodic member one of several copper alloys. Muntz metal was rapidly attacked by dezincification at all area ratios,…
The spin dynamics in a quasi-two dimensional antiferromagnet MnTiO 3 has been studied in the temperature range between 7 K and 300 K by means of inelastic neutron scattering with the multi-analyser crystal spectrometer (MAX). The exchange interaction parameters were determined from the spin-wave dispersion relations a…