Pressure Dependence of Frequencies and Frequencies Distribution Function for Aluminum: Theoretical approach | Zendy

Seham J. Abdallah | Zendy; Adnan M. Al-Sheikh | Zendy

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Pressure Dependence of Frequencies and Frequencies Distribution Function for Aluminum: Theoretical approach

Author(s) -

Seham J. Abdallah,

Adnan M. Al-Sheikh

Publication year - 2008

Publication title -

mağallaẗ al-tarbiyaẗ wa-al-ʻilm

Language(s) - English

Resource type - Journals

eISSN - 2664-2530

pISSN - 1812-125X

DOI - 10.33899/edusj.2008.56109

Subject(s) - lattice vibration , lattice (music) , phonon , aluminium , distribution function , vibration , crystal structure , work (physics) , distribution (mathematics) , statistical physics , physics , condensed matter physics , thermodynamics , materials science , chemistry , mathematics , quantum mechanics , crystallography , mathematical analysis , metallurgy , acoustics

A theoretical study was made of the pressure dependence of lattice frequencies and distribution function for aluminum by analyzing phonon frequency spectrum, using Grüneisen approximation and many equations of state (EOS). Each change in the specific volume of a crystal excites a change in the frequencies of lattice vibration in a very complex manner . This work shows how this complexity can be overcome at least approximately depending on Grüneisen approximation and Murnaghan , BirchMurnaghan and Vinet equations of state. Pressure Dependence of Frequencies and Frequencies ... 115

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