| Autor: |
Caetano, Clóvis, Teles, Lara Kühl, Marques, Marcelo, Ferreira, Luiz G. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; Jul2010, Vol. 107 Issue 12, p123904, 5p, 1 Diagram, 1 Chart, 4 Graphs |
| Abstrakt: |
The thermodynamic properties of the magnetic semiconductors GaMnAs and GaCrAs are studied under biaxial strain. The calculations are based on the projector augmented wave method combined with the generalized quasichemical approach to treat the disorder and composition effects. Considering the influence of biaxial strain, we find a tendency to the suppression of binodal decomposition mainly for GaMnAs under compressive strain. For a substrate with a lattice constant 5% smaller than the one of GaAs, for GaMnAs, the solubility limit increases up to 40%. Thus, the strain can be a useful tool for tailoring magnetic semiconductors to the formation or not of embedded nanoclusters. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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