ON THE THERMODYNAMIC PROPERTIES OF SEVERAL SOLID PHASES OF THE COMPOUND INSB.
Abstract
Measurements of the heat effects on addition of various solid phases of InSb to a solution calorimeter confirmed the existence of a new high-pressure phase InSb(III), which was formed at 37 kbar and 623K. The heats of formation of InSb(I), InSb(II) and InSb(III) were measured and the heats of transformation of InSb(I) to InSb(II) and InSb(III) and of InSb(II) to InSb(III) at atmospheric pressure and 78K were determined independently. Other thermodynamic properties of these phases, the phase boundary InSb(I)/InSb(II) and the relative positions of the triple points were calculated. The pressure-volume term is shown to be more critical than the internal energy difference in making the phase InSb(I) less stable than InSb(II) at high pressures. Observations on partially transformed specimens suggest that the transformation of metastable InSb(III) takes place in the two steps InSb(III) to InSb(II) and InSb(II) to InSb(I). (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 24, 1966
- Accession Number
- AD0642147
Entities
People
- A. K. Jena
- M. B. Bever
- M. D. Banus
Organizations
- Massachusetts Institute of Technology