کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5426143 | 1395878 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Metastable magnetic configurations of (V, Cr, Mn and Fe) on Ir(0Â 0Â 1) surfaces
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We present a theoretical study of the electronic and magnetic structure of the 3d-transition metals (MÂ =Â V, Cr, Mn and Fe) in several overlayer systems. The electronic as well as magnetic structures are investigated for pseudomorphic overlayers (M/Ir(0Â 0Â 1)), ordered alloyed overlayers of the type M0.5Ir0.5/Ir(0Â 0Â 1) and ordered binary surface alloys of V, Cr, Mn and Fe transition metals on Ir(0Â 0Â 1) substrates. The calculations are performed with a self-consistent tight-binding method using the unrestricted Hartree-Fock approximation within the Hubbard model. We obtained metastable c(2Â ÃÂ 2) configurations for V, Cr and Mn and a p(1Â ÃÂ 1) configuration for Fe pseudomorphic overlayers. However, ferrimagnetic configuration has been obtained for the ordered surface alloys M0.5Ir0.5 and the binary alloyed overlayers on Ir(0Â 0Â 1) surfaces.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 601, Issue 2, 15 January 2007, Pages 346-351
Journal: Surface Science - Volume 601, Issue 2, 15 January 2007, Pages 346-351
نویسندگان
B.A. Hamad, J.M. Khalifeh, C. Demangeat,