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Kinetics and Thermodynamics of the Formation of Thin Film Titanium Diselicide

Published online by Cambridge University Press:  21 February 2011

R.J. Kasica
Affiliation:
Department of Physics, State University of New York at Binghamton, Binghamton, NY. 13902
E.J. Cotts
Affiliation:
Department of Physics, State University of New York at Binghamton, Binghamton, NY. 13902
R.G. Ahrens
Affiliation:
Department of Physics, State University of New York at Binghamton, Binghamton, NY. 13902
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Abstract

Multilayered difiiision couples consisting of alternating layers of titanium (Ti) and amorphous silicon (a-Si) have been fabricated using sputter deposition with a range of modulation lengths corresponding to an average composition of Ti33 Si67. We have used differential scanning calorimetry to measure the enthalpy evolved during the solid state reaction a-Si + Ti → C49-TiSi2 and have characterized the phases formed using x-ray diffraction analysis. An average measured enthalpy of formation, ΔΗ was found to be ΔΗ = -58 + 9 kJ/g atom for thin film samples. Using scanning and isothermal calorimetry measurements, we have also characterized the kinetics involved during the initial intermixing stage.

Type
Research Article
Copyright
Copyright © Materials Research Society 1998

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References

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