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Ferromagnetism of 3d-impurities substituted in Ge
- Source :
-
Journal of Magnetism & Magnetic Materials . Dec2004, Vol. 284, p253-259. 7p. - Publication Year :
- 2004
-
Abstract
- Abstract: We have studied the electronic and magnetic properties of germanium doped with 3d-impurities (V–Ni) using first-principles band structure method. It is found that the ferromagnetic (FM) spin configuration is more energetically favorable than the antiferromagnetic (AFM) state for Mn-, Fe-, Co- and Ni-doped Ge, whereas the situation is reversed for V- and Cr-doped systems. The calculated electronic and magnetic structures of Mn-, Fe-, Co- and Ni-doped Ge show that half metallicity is obtained only for Mn-doped Ge that consistent with the integer value for the total magnetic moment, while Fe-, Co-, Ni-doped ones are metallic. Furthermore, the FM coupling between the Mn d states and the anion dangling-bond p states is believed to responsible for the stabilization of the FM order in Mn-doped Ge. [Copyright &y& Elsevier]
- Subjects :
- *ELECTRONICS
*GERMANIUM
*CRYSTALLOGRAPHY
*MAGNETIC materials
Subjects
Details
- Language :
- English
- ISSN :
- 03048853
- Volume :
- 284
- Database :
- Academic Search Index
- Journal :
- Journal of Magnetism & Magnetic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 15819689
- Full Text :
- https://doi.org/10.1016/j.jmmm.2004.06.043