Jayaraman, A. ; Klement Jr, W. ; Kennedy, G. C. (1963) Melting and polymorphism at high pressures in some group IV elements and III-V compounds with the diamond/zincblende structure Physical Review, 130 (2). pp. 540-547. ISSN 0031-899X
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Official URL: http://prola.aps.org/abstract/PR/v130/i2/p540_1
Related URL: http://dx.doi.org/10.1103/PhysRev.130.540
Abstract
The fusion curves of several elements and III-V compounds crystallizing in the diamond/zincblende structure have been determined to 50, or sometimes 70, kbar by means of differential thermal analysis. The melting slopes are (in °C/kbar); Si, -5.8 (lower bound); Ge, -3.8; InAs, -4.3; GaAs, -3.4; InP, -2.9; AlSb, -6.9 (provisional); GaSb, -5. Gallium antimonide has a triple point near 56.5 kbar and 385°C; its high pressure metallic polymorph melts with an initial slope of +3.4 °C/kbar. Progressively more negative slopes for the melting of the diamond/zincblende structures are apparently correlated with increasing atomic volume and decreasing normal melting point. Extension of these correlations suggests that diamond melts with only a slightly negative slope. The sequence of pressure-induced polymorphic transitions strikingly reflects straightforward increases in coordination.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Physical Society. |
ID Code: | 13373 |
Deposited On: | 11 Nov 2010 08:40 |
Last Modified: | 06 Jun 2011 05:54 |
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