Ambient pressure recovery of the structurally unconventional hydride Y3Fe4H20
Maélie Caussé, Loïc Toraille, Grégory Geneste, Paul Loubeyre · 2026
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Description
Maélie Caussé and co-authors report a hydrogen-rich compound that survives the trip back to normal pressure, in 2026 work on hydride chemistry. Squeezing hydrogen with metals past 100 gigapascals can form odd materials with rich hydrogen lattices, some prized as possible superconductors. Most fall apart once pressure drops. The team heated a hydrogen-loaded yttrium and iron mix in a diamond anvil cell, starting near 60 gigapascals.
Crystallography and computer searches mapped the new compound, Y3Fe4H20, built from iron and hydrogen units sharing edge atoms around yttrium centres. Brought back to room pressure, the material held its form for tens of hours before changing. Keeping such phases stable without pressure is a key step toward studying and using them in ordinary labs.
Catalog record
| CREATOR | Maélie Caussé, Loïc Toraille, Grégory Geneste, Paul Loubeyre |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 46638 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |