Nanoscale manipulation of the properties of solids at high pressure with relativistic heavy ions
High-pressure and high-temperature phases show unusual physical and chemical properties, but they are often difficult to 'quench' to ambient conditions. 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, Gd 2 Zr 2 O 7, 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 provides a new means for manipulating and stabilizing new materials to ambient conditions that otherwise could not be recovered. © 2009 Macmillan Publishers Limited. All rights reserved.
Publication Source (Journal or Book title)
Lang, M., Zhang, F., Zhang, J., Wang, J., Schuster, B., Trautmann, C., Neumann, R., Becker, U., & Ewing, R. (2009). Nanoscale manipulation of the properties of solids at high pressure with relativistic heavy ions. Nature Materials, 8 (10), 793-797. https://doi.org/10.1038/nmat2528