Transformation in Garnet from Orthorhombic Perovskite to LiNbO
            <sub>3</sub>
            Phase on Release of Pressure

Nobumasa Funamori, Takehiko Yagi, Nobuyoshi Miyajima, Kiyoshi Fujino

doi:10.1126/science.275.5299.513

Transformation in Garnet from Orthorhombic Perovskite to LiNbO <sub>3</sub> Phase on Release of Pressure

DOI Web Site 被引用文献25件

Nobumasa Funamori

N. Funamori and T. Yagi, Institute for Solid State Physics, University of Tokyo, Minato-ku 106, Japan.
Takehiko Yagi

N. Funamori and T. Yagi, Institute for Solid State Physics, University of Tokyo, Minato-ku 106, Japan.
Nobuyoshi Miyajima

N. Miyajima and K. Fujino, Department of Earth and Planetary Sciences, Hokkaido University, Sapporo 060, Japan.
Kiyoshi Fujino

N. Miyajima and K. Fujino, Department of Earth and Planetary Sciences, Hokkaido University, Sapporo 060, Japan.

抄録

<jats:p> High-pressure in situ x-ray diffraction and transmission electron microscopy on quenched samples show that natural garnet transforms to orthorhombic perovskite (and minor coexisting phases) containing increasing amounts of aluminum with increasing pressure. This suggests that the perovskite is the dominant host mineral for aluminum in Earth's lower mantle. Orthorhombic perovskite is quenched from ∼35 gigapascals but, because of the increased aluminum content, transforms to the LiNbO <jats:sub>3</jats:sub> structure upon quenching from ∼60 gigapascals. </jats:p>