کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1615843 1516356 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electronic and mechanical properties of rare earth monochalcogenides
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Electronic and mechanical properties of rare earth monochalcogenides
چکیده انگلیسی

In this paper, we have investigated the electronic and mechanical properties of rare earth (divalent, R+2X and trivalent, R+3X) monochalcogenides in rock-salt structured using the plasma oscillations theory of solids. We have presented the expressions relating the heteropolar gap (Ec), average energy gap (Eg), crystal ionicity (fi), electronic polarizability (αe) and bulk modulus (B) for rare earth chalcogenides with the plasmon energy (ħωp). The electronic and mechanical properties such as crystal ionicity, electronic polarizability and bulk-modulus of these compounds exhibit a linear relationship when plotted on a log–log scale against the plasmon energy (ħωp). A fairly good agreement has been found between the observed and calculated values of Ec, Eg, fi, αe and B for rare earth monochalcogenides.


► We present the electronic and mechanical properties rare earth monochalcogenides.
► We have applied the plasma oscillations theory of solids.
► In the proposed model, only the plasmon energy is required as input.
► The accuracy of the results compares well with experimental and theoretical values.
► The method turns out to be widely applicable.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 537, 5 October 2012, Pages 250–254
نویسندگان
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