Articles you may be interested inFormation of nickel silicide and germanosilicide layers on Si(001), relaxed Si Ge ∕ Si ( 001 ) , and strained Si/relaxed Si Ge ∕ Si ( 001 ) and effect of postthermal annealingThe formation of NiSi films on Si was studied using Rutherford backscattering spectrometry, atomic force microscopy, and ellipsometry. NiSi is an attractive candidate for use as a gate contact material due to its low metal-like resistivity and large processing window ͑350-750°C͒. Three phases, Ni 2 Si, NiSi, and NiSi 2 , were identified in this temperature range, and their optical databases in the 2-4 eV photon range were established, and used to model real-time ellipsometry data. It is shown that real-time ellipsometry can be used to monitor and follow the formation of the various Ni-Si phases. We have also observed the onset of agglomeration of the silicide for longer time anneals at temperatures of 500-700°C, which is much lower than 1000°C where agglomeration has been reported to occur.

The far-infrared spectrum of ice VIII as recovered at ∼100 K and zero pressure has translational and rotational bands at 162 and 455 cm−1, respectively. They are undoubtedly due to the Eu translational vibration in the x, y plane and the Eu rotational vibration about the x, y axes. The correlation of the vibrations of ice VIII with the zone-center and -boundary vibrations of the centrosymmetric phase ice X is summarized.

The dielectric absorption of eight halonaphthalenes in a polystyrene matrix has been measured in the frequency range of 102–105 Hz and in two cases also in the range of 2.2×104 to 5×107 Hz and the enthalpy of activation for the molecular relaxation process determined by using the Eyring rate expression. The relaxation time and enthalpy of activation vary as the inclination of the dipole to the principal axes is altered. In fact, the relaxation time is appreciably longer for the 2- than the 1-halonaphthalenes while the enthalpies of activation of the latter range between 18–22 kJ mol−1 and for the former 23–41 kJ mol−1. The enthalpy variation between the 1- and 2-halonaphthalenes is to be contrasted with the behavior of quinoline and isoquinoline in Nujol solution where the solute molecules have virtually identical enthalpies of molecular reorientation.

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