Structural, elastic, and lattice dynamical properties of Germanium diiodide (GeI2)
Yükleniyor...
Tarih
2010
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCIENCE BV
Erişim Hakkı
info:eu-repo/semantics/embargoedAccess
Özet
To investigate the structural, elastic, and lattice dynamical properties of the germanium diiodide, we have performed the first-principles calculations by using the local density approximation method based on density-functional theory. Some basic physical parameters such as lattice constant, bulk modulus and its first derivatives, elastic constants, shear modulus, Young's modulus, and Poisson's ratio are calculated. The phonon dispersion curves, electronic band-structures, and total and partial density of states have also been calculated for ground state C6 phase of GeI2. Our results show that this structure has got 1.72 eV direct band gap. Our secondary results on the temperature-dependent behavior of thermodynamical properties such as entropy, heat capacity, internal energy, and free energy are also presented for the same compounds. The obtained results are in good agreement with the available experimental and other theoretical data.
Açıklama
Anahtar Kelimeler
Germanium Diiodide, Mechanical Properties, Lattice Dynamical Properties, Ab-initio Calculations
Kaynak
Computational Materials Science
WoS Q Değeri
N/A
Scopus Q Değeri
Q1
Cilt
50
Sayı
2
