کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1819861 1026074 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Elastic properties and chemical bonding in ternary arsenide SrFe2As2 and quaternary oxyarsenide LaFeAsO - Basic phases for new 38-55 K superconductors from first principles
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Elastic properties and chemical bonding in ternary arsenide SrFe2As2 and quaternary oxyarsenide LaFeAsO - Basic phases for new 38-55 K superconductors from first principles
چکیده انگلیسی
Here we report the first-principle FLAPW-GGA calculations of the elastic properties of two related layered phases, namely, the ternary arsenide SrFe2As2 and the quaternary oxyarsenide LaFeAsO - basic phases for the newly discovered “1 2 2” and “1 1 1 1” 38-55 K superconductors. The independent elastic constants (Cij), bulk moduli, compressibility, and shear moduli are evaluated and discussed. The numerical estimates of the elastic parameters of the polycrystalline SrFe2As2 and LaFeAsO ceramics are performed for the first time. Additionally, the peculiarities of chemical bonding in these phases are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 469, Issue 1, 1 January 2009, Pages 15-19
نویسندگان
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