High-pressure synchrotron studies on TiO2-II nanocrystallite doped with SnO2

W. Luo; Y. Z. Ma; G. T. Zou; H. K. Mao; Z. C. Wang; Y. Wang

doi:10.1088/0953-8984/14/44/427

High-pressure synchrotron studies on TiO₂-II nanocrystallite doped with SnO₂

W. Luo, Y. Z. Ma, G. T. Zou, H. K. Mao, Z. C. Wang, Y. Wang

Materials Science and Engineering

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

Abstract

We have studied the high-pressure and high-temperature behaviour of α-PbO₂-type TiO₂-SnO₂ (5 mol%) nanocomposite up to 62.3 GPa and 1700 K in a laser-heated diamond-anvil cell by means of synchrotron energy-dispersive x-ray diffraction. We found that it transforms to the baddeleyite phase at 19.4 GPa at room temperature. This phase was stable up to about 40 GPa. At 62.3 GPa and 1700 K, the diffraction pattern showed that there exists another nonquenchable phase. We discussed the mechanisms for these high-pressure transformations in α-PbO₂-type TiO₂-SnO₂ (5 mol%) nanocomposite.

Original language	English (US)
Pages (from-to)	11069-11075
Number of pages	7
Journal	Journal of Physics Condensed Matter
Volume	14
Issue number	44 SPEC ISS.
DOIs	https://doi.org/10.1088/0953-8984/14/44/427
State	Published - Nov 11 2002

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics

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10.1088/0953-8984/14/44/427

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title = "High-pressure synchrotron studies on TiO2-II nanocrystallite doped with SnO2",

abstract = "We have studied the high-pressure and high-temperature behaviour of α-PbO2-type TiO2-SnO2 (5 mol%) nanocomposite up to 62.3 GPa and 1700 K in a laser-heated diamond-anvil cell by means of synchrotron energy-dispersive x-ray diffraction. We found that it transforms to the baddeleyite phase at 19.4 GPa at room temperature. This phase was stable up to about 40 GPa. At 62.3 GPa and 1700 K, the diffraction pattern showed that there exists another nonquenchable phase. We discussed the mechanisms for these high-pressure transformations in α-PbO2-type TiO2-SnO2 (5 mol%) nanocomposite.",

author = "W. Luo and Ma, {Y. Z.} and Zou, {G. T.} and Mao, {H. K.} and Wang, {Z. C.} and Y. Wang",

year = "2002",

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doi = "10.1088/0953-8984/14/44/427",

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T1 - High-pressure synchrotron studies on TiO2-II nanocrystallite doped with SnO2

AU - Luo, W.

AU - Ma, Y. Z.

AU - Zou, G. T.

AU - Mao, H. K.

AU - Wang, Z. C.

AU - Wang, Y.

PY - 2002/11/11

Y1 - 2002/11/11

N2 - We have studied the high-pressure and high-temperature behaviour of α-PbO2-type TiO2-SnO2 (5 mol%) nanocomposite up to 62.3 GPa and 1700 K in a laser-heated diamond-anvil cell by means of synchrotron energy-dispersive x-ray diffraction. We found that it transforms to the baddeleyite phase at 19.4 GPa at room temperature. This phase was stable up to about 40 GPa. At 62.3 GPa and 1700 K, the diffraction pattern showed that there exists another nonquenchable phase. We discussed the mechanisms for these high-pressure transformations in α-PbO2-type TiO2-SnO2 (5 mol%) nanocomposite.

AB - We have studied the high-pressure and high-temperature behaviour of α-PbO2-type TiO2-SnO2 (5 mol%) nanocomposite up to 62.3 GPa and 1700 K in a laser-heated diamond-anvil cell by means of synchrotron energy-dispersive x-ray diffraction. We found that it transforms to the baddeleyite phase at 19.4 GPa at room temperature. This phase was stable up to about 40 GPa. At 62.3 GPa and 1700 K, the diffraction pattern showed that there exists another nonquenchable phase. We discussed the mechanisms for these high-pressure transformations in α-PbO2-type TiO2-SnO2 (5 mol%) nanocomposite.

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JF - Journal of Physics Condensed Matter

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High-pressure synchrotron studies on TiO₂-II nanocrystallite doped with SnO₂

Abstract

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