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Article Dans Une Revue Nanotechnology Année : 2020

Atypical reversed pressure-induced phase transformation in Ge nanowires

Résumé

Phase transformations of Ge under compression/decompression cycle at room temperature were studied in a diamond anvil cell (DAC) using in-situ synchrotron X-ray diffraction, Raman spectroscopy and near infrared absorption techniques. Upon compression similar behavior is observed in nanowires and bulk although a higher stability is observed in nanowires. The cubic-diamond phase (Ge-3C), the most energetically favorable phase, transforms into the β-tin metallic phase at high pressure and the reverse Ge-β-tin to Ge-3C
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Dates et versions

hal-03004890 , version 1 (17-11-2020)

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Doriane Djomani, Francesco Capitani, Jean Blaise Brubach, Eugenio Calandrini, Charles Renard, et al.. Atypical reversed pressure-induced phase transformation in Ge nanowires. Nanotechnology, 2020, 31 (23), pp.235711. ⟨10.1088/1361-6528/ab7b06⟩. ⟨hal-03004890⟩
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