Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10653375 | Solid State Communications | 2005 | 5 Pages |
Abstract
We have studied polycrystalline brookite TiO2 using energy-dispersive X-ray diffraction at pressures up to 27.8 GPa and derived an ambient-pressure bulk modulus of 255 GPa using Birch-Murnaghan's equations of state with a fixed value of 4 as its first derivative. The transition from brookite-type to baddeleyite-type was observed to start at 15.8 GPa and finished at 22.8 GPa. Upon decompression, the α-PbO2 structure appeared at 3.5 GPa and the baddeleyite-type structure remained down to 1.6 GPa, the lowest pressure in the present work.
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Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
W. Luo, S.F. Yang, Z.C. Wang, Y. Wang, R. Ahuja, B. Johansson, J. Liu, G.T. Zou,