Phase equilibria in the PbSb sub(2Te) sub(4)-InSb system

• Published in: Thermochimica acta Vol. 520; no. 1-2; pp. 80 - 83
• Main Authors: Vassilev, V, Atanassova, D, Mihaylova, I, Parvanova, V, Aljihmani, L
• Format: Journal Article
• Language: Dutch
• Published: 10.06.2011
• Subjects: Boundaries; Cross sections; Crystallization; Homogeneity; Indium antimonides; Intermetallics; Solid solutions; Symmetry
• ISSN: 0040-6031
• DOI: 10.1016/j.tca.2011.03.019

A phase diagram of the PbSb sub(2Te) sub(4)-InSb system, which is polythermal cross section of the three-component PbTe-Sb sub(2Te) sub(3)-InSb system, was built using DTA, XRD, microhardness and density measurements. The system contains the PbSb sub(2Te) sub(4) super(.(2 +/- [delta])InSb compound of variable composition, incongruently melting at 530 +/- 5 [deg]C, and with asymmetric area of homogeneity shifted to the side rich in InSb (+[delta] = 0-2). The PbSb) sub(2)Te sub(4) super(.)2InSb compound crystallizes in orthorhombic symmetry with unit cell parameters: a = 7.7640 Aa; b = 6.4144 Aa; and c = 3.6010 Aa, alpha = beta = gamma = 90[deg]. The system also contains PbSb sub(2Te) sub(4) and InSb based boundary solid solutions extended from 0 to 10 and from 95 to 100 mol% InSb, respectively, at room temperature. The state diagram in the PbSb sub(2Te) sub(4)-InSb system is built. The system contains the PbSb sub(2Te) sub(4) super(.(2 +/- [delta])InSb compound of variable composition, which crystallizes in orthorhombic symmetry. The system contains PbSb) sub(2)Te sub(4 and InSb based boundary solid solutions.)