Gamalski, AD and Tersoff, J and Sharma, R and Ducati, C and Hofmann, S (2012) Metastable crystalline AuGe catalysts formed during isothermal germanium nanowire growth. Physical Review Letters, 108. ISSN 0031-9007Full text not available from this repository.
We observe the formation of metastable AuGe phases without quenching, during strictly isothermal nucleation and growth of Ge nanowires, using video-rate lattice-resolved environmental transmission electron microscopy. We explain the unexpected formation of these phases through a novel pathway involving changes in composition rather than temperature. The metastable catalyst has important implications for nanowire growth, and more broadly, the isothermal process provides both a new approach to growing and studying metastable phases, and a new perspective on their formation. © 2012 American Physical Society.
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|Date Deposited:||04 Feb 2015 22:13|
|Last Modified:||02 Mar 2015 01:28|