Supercooling during crystallisation and thermal dispergation of thin In-Pb films located between molybdenum layers

• Published in: Thin solid films 2021-09, Vol.734, p.138867, Article 138867
• Main Authors: Dukarov, S.V., Petrushenko, S.I., Sukhov, V.N.
• Format: Article
• Language: English
• Subjects: Alloys; Crystallisation; Indium lead alloy; Melting; Supercooling; Thin films
• ISSN: 0040-6090; 1879-2731
• DOI: 10.1016/j.tsf.2021.138867

•For In-Pb alloy between Mo films the supercooling vs concentration was obtained.•Creation of a solid solution in bilayer films In-Pb occurs at the room temperature.•Supercooling is maximum for alloy with 50% Pb and decreases for pure components.•Composition of the crystalline nucleus matches the supercooled melt. In this work, we study the supercooling during crystallisation of layers of fusible In-Pb alloys located between molybdenum layers. Two independent methods were used: electrical resistance measuring of the layered films, and electron diffraction during in situ heating and cooling. The concentration dependence of relative supercooling was obtained for Mo/(In-Pb)/Mo films, and it was found that this reached a maximum for samples containing about 50 wt.% of lead in a fusible alloy. The changes in the morphological structure of the films in the first heating cycle were studied using transmission and scanning electron microscopy, and it was found that melting did not significantly affect the morphological structure of Mo/(In-Pb)/Mo films, while (In-Pb)/Mo films underwent significant changes.