Equation of state for fullerite C60

Рехвиашвили, С. Ш.

doi:10.1134/s1063783417040229

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Mie-grüneisen-debye (Mgd) Eos1

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2017

2022

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“…In quantum-statistical framework, the vibrationrotational and intramolecular contributions of crystalline molecules, as isotropic quantum oscillators are associated with two Grüneisen parameters, i.e.  and q [13].…”

Section: Mie-grüneisen-debye (Mgd) Eosmentioning

confidence: 99%

Theoretical High Pressure Study of Phonon Density of State and Debye Temperature of Solid C60: Grüneisen Approximation Approach

ALSHEKH

KAREEM²,

MAWLLOD

2022

International Journal of Thermodynamics

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A nanomaterial equation of state has been combined with Grüneisen approximation in present work to investigate the influence of high pressure on phonon density of state function of C60 through evaluating variations of lattice vibration frequencies and variation of mode density. Furthermore, the effect of high pressure on Debye temperature has been determined by using a formula of volume dependence of Debye temperature. Volume compression ratio in C60 has been computed, using a nanomaterial equation of state. Expressions of pressure dependence of phonon density of state and Debye temperature have been combined with volume compression ratio value. The evaluated result of volume compression ratio and phonon density of state have been compared with the experimental observations and good agreement can be seen.

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Section: Mie-grüneisen-debye (Mgd) Eosmentioning

confidence: 99%