Size-dependent melting point depression of nickel nanoparticles

van Teijlingen, Alexander and Davis, Sean A. and Hall, Simon R. (2020) Size-dependent melting point depression of nickel nanoparticles. Nanoscale Advances, 2 (6). pp. 2347-2351. ISSN 2516-0230 (https://doi.org/10.1039/D0NA00153H)

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Abstract

We investigate the phase-transition behaviour of nickel nanoparticles (3–6 nm) via dynamic TEM. The nanoparticles were synthesized within a reverse microemulsion and then monitored via dynamic TEM simultaneously while undergoing controlled heating. The size-dependent melting point depression experimentally observed is compared with, and is in good agreement with existing thermodynamic and molecular dynamic predictions.