Structural phase transitions in brookite-type TiO2 under high pressure

W. Luo; S. F. Yang; Z. C. Wang; Y. Wang; R. Ahuja; B. Johansson; J. Liu; G. T. Zou

doi:10.1016/j.ssc.2004.09.049

Structural phase transitions in brookite-type TiO₂ under high pressure

W. Luo, S. F. Yang, Z. C. Wang, Y. Wang, R. Ahuja, B. Johansson, J. Liu, G. T. Zou

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

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.

Original language	English (US)
Pages (from-to)	49-53
Number of pages	5
Journal	Solid State Communications
Volume	133
Issue number	1
DOIs	https://doi.org/10.1016/j.ssc.2004.09.049
State	Published - Jan 2005

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.1016/j.ssc.2004.09.049

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title = "Structural phase transitions in brookite-type TiO2 under high pressure",

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.",

author = "W. Luo and Yang, {S. F.} and Wang, {Z. C.} and Y. Wang and R. Ahuja and B. Johansson and J. Liu and Zou, {G. T.}",

note = "Funding Information: This work is supported by Swedish International Development Cooperation Agency (SIDA) as Research Grant under the Asian–Swedish Research Partnership Programme.",

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doi = "10.1016/j.ssc.2004.09.049",

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T1 - Structural phase transitions in brookite-type TiO2 under high pressure

AU - Luo, W.

AU - Yang, S. F.

AU - Wang, Z. C.

AU - Wang, Y.

AU - Ahuja, R.

AU - Johansson, B.

AU - Liu, J.

AU - Zou, G. T.

N1 - Funding Information: This work is supported by Swedish International Development Cooperation Agency (SIDA) as Research Grant under the Asian–Swedish Research Partnership Programme.

PY - 2005/1

Y1 - 2005/1

N2 - 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.

AB - 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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JO - Solid State Communications

JF - Solid State Communications

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Structural phase transitions in brookite-type TiO₂ under high pressure

Abstract

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