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- Dubrovinskaia, NA, et al.
(författare)
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High-pressure study of titanium carbide
- 1999
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Ingår i: JOURNAL OF ALLOYS AND COMPOUNDS. - : ELSEVIER SCIENCE SA. - 0925-8388. ; 289:1-2, s. 24-27
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- We studied titanium carbide (TiC) at pressures up to 38(1) GPa using in situ powder X-ray diffraction and observed a phase transformation from the NaCl-type cubic structure (B1) to a rhombohedral structure at a pressure above 18 GPa at 300 K under a quasi
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2. |
- Dubrovinsky, LS, et al.
(författare)
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Experimental and theoretical identification of a new high-pressure phase of silica
- 1997
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Ingår i: NATURE. - 0028-0836. ; 388:6640, s. 362-365
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Tidskriftsartikel (refereegranskat)abstract
- Following the discovery of stishovite (the highest-pressure polymorph of silica known from natural samples), many attempts have been made to investigate the possible existence of denser phases of silica at higher pressures. Based on the crystal structures
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3. |
- Dubrovinsky, L, et al.
(författare)
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Theoretical study of the stability of MgSiO3-perovskite in the deep mantle
- 1998
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Ingår i: GEOPHYSICAL RESEARCH LETTERS. - : AMER GEOPHYSICAL UNION. - 0094-8276. ; 25:23, s. 4253-4256
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- We have used theoretical methods (Full-Potential Linear-muffin-tin-orbital, FPLMTO, and lattice dynamics) to calculate the Gibbs free energy of the phases, perovskite (MgSiO3), SBAD (SiO2), stishovite (SiO2) and periclase (MgO). At 300 K, perovskite is fo
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