Initial stages of cobalt-disilicide formation in mesotaxy

Article Abstract:

The first stages of cobalt-disilicide formation in mesotaxy have been studied. Doses ranged from 1% to 60% of the critical dose for formation of a uniform layer with observations for the low-dose range, 5% and below, where precipitate density is low, emphasized. Observation in post-implantation annealing at 1000 degrees C. showed contraction of the Co depth profile for all doses; formation of a secondary peak near the surface; and shifting of the peak toward the bulk. The secondary peak comes out only in samples with 3%+ of the critical dose. For interpretation of the occurrence of the secondary peak and the shift of the main peak it is necessary to have a model exceeding the standard ripening model used up to now in describing mesotaxy. More recent ripening-based concepts allow for a full description of the observations with a minimum of parameters, especially not requiring interaction with the complex defect profiles formed at first in implantation. Including precipitate-precipitate interactions and the role of diffusion screening properly is necessary.

Semiconductor chips, Integrated circuits, Materials, Thin films, Cobalt, Precipitation (Chemistry), Ion bombardment, Ion beam irradiation, Silicides

---

FTIR analysis of the phase content in low-density polyethylene

Article Abstract:

Fourier transform infrared (FTIR) spectroscopy analysis and slow calorimetry has examined the phase content in low-density polyethylene (LDPE). The CH2 rocking vibrations in nonoriented films from a press or from solution were analyzed and three phases were found. In pressed films the orthorhombic, monoclinic-like phase, was found. In the other films amorphous forms were found. Quantitative measurement of two noncrystalline phases in nonstrained samples is a new finding for semicrystalline polymers and is probably generally true.

Polymers, Polyethylene, Fourier transform infrared spectroscopy, Phase rule and equilibrium, Phase equilibrium

---

Similar abstracts:

• Abstracts: Chemical kinetics and thermodynamics of tin ionization in H2-O2-N2 flames and the proton affinity of SnO. The decarbonylation of ionized beta-hydroxypyruvic acid: the hydrogen-bridged radical cation (CH2=O...H...O=C-OH)super.+ studied by experiment and theory
• Abstracts: Spectroscopic and differential scanning calorimetric studies of the phase transitions in oxanorbornane. Pressure-tuning infrared and Raman spectroscopic study of (2,2'-bypyridine)tetracarbonylchromium(0)
• Abstracts: On the influence of secondary structure on the alpha-C--H bond dissociation energy of proline residues in proteins: a theoretical study
• Abstracts: Orientation in stretched polymer-dispersed liquid crystals. Ring-opening polymerization (ROP) of strained metallocenophanes: the discovery and development of a new route to high molecular weight poly(metallocenes)
• Abstracts: Synthesis, conformational studies, and inclusion properties of tris((2-pyridylmethyl)oxy)hexahomotrioxacalix(3)arenes. part 2

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.