کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1814719 | 1025653 | 2009 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Lattice mechanical properties of alkaline earth metals in bcc and fcc phases
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Lattice mechanical properties of alkaline earth metals in bcc and fcc phases Lattice mechanical properties of alkaline earth metals in bcc and fcc phases](/preview/png/1814719.png)
چکیده انگلیسی
A model pseudopotential depending on an effective core radius treated as a parameter is used for alkaline earth metals in bcc and fcc phases to study the Binding energy, Interatomic interactions, phonon dispersion curves, Phonon density of states, Debye-Waller factor, mean square displacement, Debye-Waller temperature parameters, dynamical elastic constants (C11, C12 and C44), bulk modulus (B), shear modulus (Câ²), deviation from Cauchy relation (C12âC44), Poisson's ratio (Ï), Young's modulus (Y), behavior of phonon frequencies in the elastic limit independent of the direction (Y1), limiting value in the [1Â 1Â 0] direction (Y2), degree of elastic anisotropy (A) and propagation velocities of the elastic waves. The contribution of s-like electrons is incorporated through the second-order perturbation theory due to model potential. The theoretical results are compared with the existing experimental data. A good agreement between theoretical investigations and experimental findings has confirmed the ability of our potential to yield large numbers of lattice mechanical properties of certain alkaline earth metals.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 404, Issue 16, 1 August 2009, Pages 2401-2411
Journal: Physica B: Condensed Matter - Volume 404, Issue 16, 1 August 2009, Pages 2401-2411
نویسندگان
J.K. Baria, A.R. Jani,