TY - JOUR
T1 - Internal strain energy of A3xB31-xN ternary solid solutions of cubic modification
AU - Elyukhin, V. A.
AU - Nikishin, S. A.
PY - 1996/6
Y1 - 1996/6
N2 - The crystal structure of the ternary solid solutions GaxAl1-xN, InxGa1-xN and InxAl1-xN is described theoretically on the microscopic level, and the energies of internal strain in these solutions are calculated in terms of the valence-force-field model. For the solid solutions InxGa1-xN and InxAl1-xN the internal strain energy is an important parameter inasmuch as it is responsible for the existence of a broad miscibility gap in which solid solution formation is possible under thermodynamically nonequilibrium conditions. At the same time the miscibility gap does not present any serious problem for the GaxAl1-xN solid solutions. In view of the tendency for spinodal decomposition, common for these materials, the InxGa1-xN and InxAl1-xN solid solutions can also be synthesized over a wide range of compositions under thermodynamically nonequilibrium conditions that ensure formation of metastable single-phase solid solutions. Formation of InxGa1-xN and InxAl1-xN solid solutions with x = 0.25, 0.50 and 0.75 as superstructures immediately in the course of their synthesis is the most likely event.
AB - The crystal structure of the ternary solid solutions GaxAl1-xN, InxGa1-xN and InxAl1-xN is described theoretically on the microscopic level, and the energies of internal strain in these solutions are calculated in terms of the valence-force-field model. For the solid solutions InxGa1-xN and InxAl1-xN the internal strain energy is an important parameter inasmuch as it is responsible for the existence of a broad miscibility gap in which solid solution formation is possible under thermodynamically nonequilibrium conditions. At the same time the miscibility gap does not present any serious problem for the GaxAl1-xN solid solutions. In view of the tendency for spinodal decomposition, common for these materials, the InxGa1-xN and InxAl1-xN solid solutions can also be synthesized over a wide range of compositions under thermodynamically nonequilibrium conditions that ensure formation of metastable single-phase solid solutions. Formation of InxGa1-xN and InxAl1-xN solid solutions with x = 0.25, 0.50 and 0.75 as superstructures immediately in the course of their synthesis is the most likely event.
UR - http://www.scopus.com/inward/record.url?scp=0030166080&partnerID=8YFLogxK
U2 - 10.1088/0268-1242/11/6/011
DO - 10.1088/0268-1242/11/6/011
M3 - Article
AN - SCOPUS:0030166080
VL - 11
SP - 917
EP - 920
JO - Semiconductor Science and Technology
JF - Semiconductor Science and Technology
SN - 0268-1242
IS - 6
ER -