We study the changes of magnetoresistance induced by controlled thermal annealing at temperatures ranging from 300 to 600 °C of a Ga0.98Mn0.02As alloy grown by low-temperature molecular beam epitaxy. We use a resistor-network model for describing the electrical transport as a function of temperature and external magnetic field. The model is founded on classical semiconductor band transport and ...

background: many efforts have been undertaken until now to find an alternative approach to packed red cell tranfusion in major β-thalassemia. augmentation of fetal hemoglobin by hydroxyurea has proved to be less effective in this condition as compared to sickle cell anemia, probably due to molecular heterogeneity of the former disease. hydroxyurea efficacy and its relation to xmn1 polymorphism ...

Designing and developing the Mg alloys with low cost high performance is of great significance. Novel Mg-1Bi-xMn (x = 0, 1 2 wt.%) extruded alloys, in this work, were fabricated at different extrusion temperatures (220, 250 300 °C). The effects temperature Mn addition on microstructures mechanical properties room investigated. results showed that decreasing could refine average grain size, weak...

The existence of coarse Fe-bearing phases and macro-segregation under the twin-roll casting (TRC) condition has always been a restrictive factor for preparation high-performance Al alloys. In this work, effect Mn contents on formation phases, behavior mechanical properties TRC Al-0.5Mg-0.7Si-0.1Fe-xMn (x = 0, 0.1, 0.3 0.5 wt.%) alloys have investigated. region in as-cast 0Mn alloy is found to c...