Structural and thermodynamic properties of Alumina

نویسنده

  • Seyed Javad Mousavi
چکیده مقاله:

We have investigated the electronic structure and thermodynamic properties of supercell of the -Al2O3 by first-principles calculation in framework of density functional theory (DFT) and full potential linearized augmented plane wave (FP-LAPW) with generalized gradient approximation (GGA) and by quasi-harmonic Debye model. Our calculated value for direct band gap of α-Al2O3 is 7.2 eV which is very close to its experimental measurement. Through the quasi-harmonic Debye model, in which the phononic effects are considered, we have obtained successfully the thermodynamic parameters including the relative volume and heat capacity over a pressure range 0-70 Gpa and a wide temperature range of 0-2000 K.

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structural and thermodynamic properties of alumina

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عنوان ژورنال

دوره 1  شماره 2

صفحات  15- 24

تاریخ انتشار 2013-07-01

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