Journal
NATURE MATERIALS
Volume 8, Issue 10, Pages 793-797Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/NMAT2528
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Funding
- Office of Basic Energy Sciences, USDOE [DE-FG02-97ER45656, DE-AC02-10886]
- National Synchrotron Light Source at X17C station [NSF COMPRES EAR01-35554]
- National Science Foundation
- German Science Foundation DFG
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High-pressure and high-temperature phases show unusual physical and chemical properties, but they are often difficult to 'quench' to ambient conditions(1). Here, we present a new approach, using bombardment with very high-energy, heavy ions accelerated to relativistic velocities, to stabilize a high-pressure phase. In this case, Gd2Zr2O7, pressurized in a diamond-anvil cell up to 40 GPa, was irradiated with 20 GeV xenon or 45 GeV uranium ions, and the (previously unquenchable) cubic high-pressure phase was recovered after release of pressure. Transmission electron microscopy revealed a radiation-induced, nanocrystalline texture. Quantum-mechanical calculations confirm that the surface energy at the nanoscale is the cause of the remarkable stabilization of the high-pressure phase. The combined use of high pressure and high-energy ion irradiation(2,3) provides a new means for manipulating and stabilizing new materials to ambient conditions that otherwise could not be recovered.
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