Negative activation volume of oxygen self-diffusion in forsterite

Hongzhan Fei,Michael Wiedenbeck,Naoya Sakamoto,Hisayoshi Yurimoto,Takashi Yoshino,Daisuke Yamazaki,Tomoo Katsura

Physics of the Earth and Planetary Interiors（2018）

引用 8|浏览11

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摘要

•Oxygen self-diffusion in forsterite has a negative activation volume.•Ionic conduction in forsterite is controlled by O diffusion at pressures >10 GPa.•The conductivity profile in the deep asthenosphere is explained by O diffusion.

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关键词

Oxygen self-diffusion,Pressure dependence,Activation volume,Forsterite,Ionic conductivity,Upper mantle

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