H.G. Lee, M. Gershenzon, B.L. Goldenberg, J. Electron. Table 1 Figure 1 . Bowing parameters and critical temperatures for nitride semiconductors. Temperature-composition diagrams for the regular solution and examples of the space structures. The curves 1 and 2 are the binodal and the spinodal respectively.
S marks the area, where the solution is stable.
Figure 2 . Compositional dependence of S xx at various temperature. Figure 3 . Variation of the direct energy band gap E g with x for In x Ga 1-x N at room temperature. The dashed line marks the range where term E g loses its ordinary meaning.