UM
Time resolved X-ray diffraction study of the transformation kinetics of TiSi2-C49 in amorphous Si/Ti multilayers
Sariel J.; Chen Haydn; Jongste J.F.; Radelaar S.
1993
Source PublicationMaterials Research Society Symposium Proceedings
Volume311
Pages269-274
AbstractAmorphous Si/Ti multilayers transform at high temperatures (above 700 °C) to TiSi-C54. This phase is important for microelectronics applications because of its low resistivity, stability up to 900 °C, and compatibility with silicon processing. However, an unfavorable metastable TiSi-C49 phase is usually formed at lower temperatures. Thus, an understanding of the C49 phase formation kinetics is useful to the device processing strategy. The kinetics of the transformation of TiSi-C49 phase can be characterized as a process of nucleation and growth, using the well known Johnson Mehl Avrami (JMA) equation. In the present work the formation kinetics of the C49 phase has been studied by an in situ x-ray diffraction technique. Isothermal annealing in vacuum was done at four temperatures, in the range of 275 °C to 310 °C. A position sensitive detector (PSD) was used to simultaneously collect the diffracted beams of (131) and (150) peaks of the C49 phase. From the data, the Avrami exponent, n, was determined to be 2.0±0.1. The reaction rate constant k follows a familiar Arrhenius-type equation with a measured activation energy of 2.5 eV. Comparison of our x-ray results with kinetic data obtained by other means will be discussed.
URLView the original
Language英語English
Fulltext Access
Document TypeConference paper
CollectionUniversity of Macau
AffiliationNuclear Research Center-Negev
Recommended Citation
GB/T 7714
Sariel J.,Chen Haydn,Jongste J.F.,et al. Time resolved X-ray diffraction study of the transformation kinetics of TiSi2-C49 in amorphous Si/Ti multilayers[C],1993:269-274.
APA Sariel J.,Chen Haydn,Jongste J.F.,&Radelaar S..(1993).Time resolved X-ray diffraction study of the transformation kinetics of TiSi2-C49 in amorphous Si/Ti multilayers.Materials Research Society Symposium Proceedings,311,269-274.
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