Abstract
This study investigates the effect of high pressure on the phonon frequency spectrum of silicon nanoparticles with two different diameters, 4.1 nm and 10.3 nm. The equations of state of Suzuki and Birch–Murnaghan were used to evaluate the volume compression ratio. It was found that the high pressure effects depend significantly on the particle size that was under consideration. The 4.1-nm particle experienced higher reduction in volume and a more significant shift in phonon frequency spectrum under a specific pressure value than the nanoparticle of a diameter of 10.3 nm did. Moreover, the Suzuki equation, which is proposed as a nanomaterial equation of state, predicts a more dramatic change in response to high pressure for the entire studies of relative volume and phonon frequency spectrum data.
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Jalal, S.K., Al-Sheikh, A.M. & Al-Saqa, R.H. High Pressure Effects on the Phonon Frequency Spectrum of Silicon Nanoparticle. Iran J Sci Technol Trans Sci 45, 391–396 (2021). https://doi.org/10.1007/s40995-020-01041-9
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DOI: https://doi.org/10.1007/s40995-020-01041-9