Abstract

The activation energies Ea for C49 and C54 TiSi2 formation were determined using in situ resistance measurements during rapid thermal annealing. Ti films were evaporated on undoped polycrystalline Si (poly-Si) and single-crystal Si on sapphire (SOS) substrates. The resistance was monitored for heating rates from 1 to 95 °C/s up to 1000 °C. The Ea’s determined from Kissinger plots were 1.86±0.23 and 1.65±0.31 eV for C49 TiSi2 formation and 3.30±0.16 and 3.67±0.13 eV for C54 TiSi2 formation for Ti/poly-Si and Ti/SOS samples, respectively. These are the first reported measurements of Ea’s for C49 and C54 TiSi2 formation at such high heating rates. The formation sequence remained the same for the range of heating rates examined.

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