Nano Archive

Electrical resistivity of nano-crystalline and natural MgTiO3-geikielite at high-pressures up to 8 GPa

Parthasarathy, G (2007) Electrical resistivity of nano-crystalline and natural MgTiO3-geikielite at high-pressures up to 8 GPa. Materials Letters, 61 (21). 4329 - 4331.

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Official URL: http://www.sciencedirect.com/science/article/B6TX9...

Abstract

We report here for the first time the pressure dependence of the electrical resistivity of nano-crystalline and natural MgTiO3-geikielite up to 8 GPa, at room temperature. The electrical resistivity of nano-crystalline geikielite decreases from 2.246 × 108 Ω m at room pressure to 2.0 × 106 Ω m at 7.8 GPa, whereas the electrical resistivity of natural geikielite decreases from 1.098 × 108 Ω m at room pressure to 1.74 × 105 Ω m at 7.8 GPa, indicating more compressibility of natural geikielite in the pressure range of investigations. The present study shows that geikielite does not undergo any pressure-induced phase transition up to 7.8 GPa, indicating its stability in the Earth's mantle pressure conditions.

Item Type:Article
Uncontrolled Keywords:Nano-crystalline materials; High-pressure; Geikielite; Minerals
Subjects:Material Science > Nanostructured materials
ID Code:6703
Deposited By:SPI
Deposited On:09 Feb 2010 12:56
Last Modified:09 Feb 2010 12:56

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