ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
We report density functional calculations using the full-potential linearized muffin-tinorbital method on early first row transition metal doped Silicon Carbide in both cubic (3C) andhexagonal (4H) polytypes. The energy levels in the gap for Ti, V and Cr are in good agreement withthe available photoluminescence experiments. Our calculation shows that the Ti impurity is activefor 4H but not for 3C, while V and Cr impurities are active for both polytypes. The magneticinteractions are very different for Cr and Mn. Cr shows a very local exchange interaction that decaysrapidly, which is similar for different polytypes and different sites. The exchange interaction for Mnis quite long range and is very sensitive to the location of the Mn pairs
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.527-529.641.pdf
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