Kinetic hindrance of phase transformations in dense MgSiO3 polymorphs under shock compression
Sota Takagi, Donghoon Kim, Yingwei Fei, Sally June Tracy · 2026
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Description
Sota Takagi, Donghoon Kim, Yingwei Fei, and Sally June Tracy shock a deep-Earth mineral and watch it refuse to change in a 2026 paper. The mineral pair are dense forms of magnesium silicate. Phase diagrams say they should transform at set pressures. Laser shocks test whether nanosecond squeezes allow those flips.
Bridgmanite kept its structure far past its predicted boundary. Akimotoite also held its form to high pressure ranges. It lost crystal order only at extreme pressures later. Neither expected transition appeared under shock at all. Slow atomic rearrangement, not stability, gates the change. Crystal network stiffness may predict such stubbornness. Impact modeling for planets takes note.
Catalog record
| CREATOR | Sota Takagi, Donghoon Kim, Yingwei Fei, Sally June Tracy |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 35 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |