Annealing of In x Ga 1-x Sb ingots
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essure, kbar
25 40 70 125
InSb(II)
Specific Volume, cc/g-atom InSb(IV) InSb(IIl)
15.70 15.69 -
462-VOLUME9A, MARCH 1978
15.23 15.02 -
13.93
Ref.
6 7 2 2
m e t a l l i c n a t u r e of InSb(II), InSb(III) and InSb(IV) and the n o n m e t a l l i c n a t u r e of InSb(I). Th e e x p e r i m e n t a l l y m e a s u r e d v a l u e s of the enthalpy d i f f e r e n c e s b et w een the h i g h - p r e s s u r e p h a s e s at 78 K and 1 a t m p r e s s u r e indicate that at this t e m p e r a t u r e and p r e s s u r e , InSb(II) is s t a b l e r e l a t i v e to InSb(III) and InSb(IV), and InSb(III) is s t a b l e r e l a t i v e to InSb(IV). Th e p h ase d i a g r a m s u g g e s t s that at 30 k b a r and 300 K, InSb(IV) is the s t a b l e p h a s e and at about 100 k b a r and 300 K, InSb(III) is the s t a b l e phase. Thus, the r e l a t i v e s t a b i l i t y of the v a r i o u s p o l y m o r p h i c m o d i f i c a t i o n s changes a p p r e c i a b l y with p r e s s u r e . T h i s b e h a v i o r is c o n s i s t e n t with the h e a t s of t r a n s f o r m a t i o n and a v a i l able v a l u e s of the s p e c i f i c v o l u m e s (Table I) and c o m p r e s s i b i l i t i e s 2'~ of the m o d i f i c a t i o n s . Th e a u t h o r s thank M e s s r s . L. I. Sudenfield and R. W e s t b e r g f o r t e c h n i c a l a s s i s t a n c e , and M i s s M a r y C. C r e t e l l a f o r help with the m a n u s c r i p t . Support f or p a r t of this w o r k (A.K.J. and M.B.B.) by the Office of N a v a l R e s e a r c h u n d er C o n t r a c t Nonr 3963-(19) is a c k n o w l e d g e d . T h e p a r t conducted at the L i n c o l n L a b o r a t o r y (M~D.B.) was s p o n s o r e d by the D e p a r t m e n t of the A i r F o r c e . 1. M. D. Banus and M. C. Lavine:J. AppL Phys., 1967,vol. 38, p. 2042. 2. M. D. Banus and M. C. Lavine:J. Appl. Phys., 1969,vol. 40, p. 409. 3. A. K. Jena, M. B. Bever,and M. D. Banus: Trans. TMS-AIME, 1967, vo].239, p. 725. 4. B. W. Howlett,J. S. L1.Leach, L. B. Ticknor,and M. B. Bever:Rev. Sci. Instr., I962, vol. 33, p. 619. 5. R. Hultgren,R. L. Orr, P. D. Anderson, and K. K. Kelley:Selected Valuesof Thermodynamic Propertt'esof Metals and Alloys, John Wiley& Sons,New York, 1963. 6. R. E. Hanneman, M. D. Banus, and H. C. Gatos: J. Phys. Chem. Solids, 1964, vol. 25, p. 293. 7. D. B. McWhanand M. Marezio:.L Chem. Phys., 1966,vol. 45, p. 2508. 8. A. J. Darnelland W. F. Libby:Phys. Rev., 1964,vol. 135, p. A 1453.
Annealing of lnxGal_xSb Ingots SANGHAMITRA SEN, WILLIAM R. WILCOX, AND R O B E R T A. L E F E V E R Th e I I I - V al l o y s e m i c o n d u c t o r s t y p i c a l l y d i s p l a y c o m p l e t e so l i d s o l u b i l i t y . Thus in p r i n c i p a l it should be p o s s i b l e to solidify l a r g e s i n g l e c r y s t a l s of t h e s e a l l o y s . In p r a c t i c e this has b e e n a c c o m p l i s h e d only f o r dilute a l l o y s . D i r e c t i o n a l s o l i d i f i c a t i o n of c o n c e n t r a t e d a l l o y s y i e l d s p o l y c r
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