MASTER CURVE FOR CRYSTALLIZATION OF SB70TE30 AMORPHOUS ALLOYS

Authors

  • J.A. Rocca Universidad de Buenos Aires. Facultad de Ingeniería. Laboratorio de Sólidos Amorfos. Av. Paseo Colón 850 (C1063ACV), Buenos Aires, Argentina CONICET - Universidad de Buenos Aires. Instituto de Tecnologías y Ciencias de la Ingeniería “Hilario Fernández Long” (INTECIN). Av. Paseo Colón 850 (C1063ACV), Buenos Aires, Argentina
  • M.A. Ureña Universidad de Buenos Aires. Facultad de Ingeniería. Laboratorio de Sólidos Amorfos. Av. Paseo Colón 850 (C1063ACV), Buenos Aires, Argentina CONICET - Universidad de Buenos Aires. Instituto de Tecnologías y Ciencias de la Ingeniería “Hilario Fernández Long” (INTECIN). Av. Paseo Colón 850 (C1063ACV), Buenos Aires, Argentina
  • M.R. Fontana Universidad de Buenos Aires. Facultad de Ingeniería. Laboratorio de Sólidos Amorfos. Av. Paseo Colón 850 (C1063ACV), Buenos Aires, Argentina CONICET - Universidad de Buenos Aires. Instituto de Tecnologías y Ciencias de la Ingeniería “Hilario Fernández Long” (INTECIN). Av. Paseo Colón 850 (C1063ACV), Buenos Aires, Argentina

Abstract

One of the possible uses of chalcogenide glasses is their application in phase change memory devices. The operation of these non-volatile memories is based on the use of an alloy with chalcogenide elements as a sensitive material, taking advantage of the great contrast in electrical resistance between the amorphous and crystalline states. The Sb70Te30 (atomic percentage) alloy stands out among the chalcogenide materials with these properties. On the other hand, the knowledge of the microscopic mechanisms of the amorphous alloys crystallization allows microstructural control to optimize properties. At this point, differential scanning calorimetry (DSC) has been widely used for the determination of the thermal stability of amorphous alloys. Previously we have started the study of the crystallization kinetics of Sb70Te30 amorphous alloys. In this work, a procedure based on the so-called isokinetic hypothesis has been applied to carry out the kinetic analysis of the calorimetric data of continuous heating. In particular, the so-called master curve of the crystallization kinetics of this alloy is determined.

Published

2023-03-25 — Updated on 2023-05-24

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Section

Condensed Matter