Title : Structural transformations in carbon under extreme pressure: beyond diamond.

Pub. Date : 2009 May 21

PMID : 19466848






5 Functional Relationships(s)
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1 Diamond transforms to a mechanically stable cubic structure (P4(1)32) at 2.5 TPa and 300 K. At 4000 K and 2 TPa, simple cubic carbon SC1 (Pm-3m) is obtained from cubic diamond. Tetradecanoylphorbol Acetate transcription factor 19 Homo sapiens
2 Diamond transforms to a mechanically stable cubic structure (P4(1)32) at 2.5 TPa and 300 K. At 4000 K and 2 TPa, simple cubic carbon SC1 (Pm-3m) is obtained from cubic diamond. Carbon transcription factor 19 Homo sapiens
3 The high-pressure tetrahedrally coordinated BC8 (Ia-3) structure of carbon is obtained by decompression of the SC1 structure at 1 TPa and 5000 K. At 3000 K, with decompression of SC1 carbon to 1 TPa, two new metastable tetrahedrally coordinated structures form, MP8 (P2/c) and OP8 (Pccn) with higher density than that of cubic diamond. Carbon transcription factor 19 Homo sapiens
4 The high-pressure tetrahedrally coordinated BC8 (Ia-3) structure of carbon is obtained by decompression of the SC1 structure at 1 TPa and 5000 K. At 3000 K, with decompression of SC1 carbon to 1 TPa, two new metastable tetrahedrally coordinated structures form, MP8 (P2/c) and OP8 (Pccn) with higher density than that of cubic diamond. Carbon transcription factor 19 Homo sapiens
5 The high-pressure tetrahedrally coordinated BC8 (Ia-3) structure of carbon is obtained by decompression of the SC1 structure at 1 TPa and 5000 K. At 3000 K, with decompression of SC1 carbon to 1 TPa, two new metastable tetrahedrally coordinated structures form, MP8 (P2/c) and OP8 (Pccn) with higher density than that of cubic diamond. Carbon transcription factor 19 Homo sapiens