- Title
- A structural model for surface-enhanced stabilization in some metallic glass formers
- Creator
- Levchenko, Elena V.; Evteev, Alexander V.; Yavari, Alain R.; Louzguine-Luzgin, Dmitri V.; Belova, Irina V.; Murch, Graeme E.
- Relation
- ARC
- Relation
- Philosophical Magazine Letters Vol. 93, Issue 1, p. 50-57
- Publisher Link
- http://dx.doi.org/10.1080/09500839.2012.729960
- Publisher
- Taylor & Francis
- Resource Type
- journal article
- Date
- 2013
- Description
- A structural model for surface-enhanced stabilization in some metallic glass formers is proposed. In this model, the alloy surface structure is represented by five-layer Kagomé-net-based lateral ordering. Such surface structure has intrinsic abilities to stabilize icosahedral-like short-range order in the bulk, acting as ‘a cloak of liquidity’. In particular, recent experimental observations of surface-induced lateral ordering and a very high glass forming ability of the liquid alloy Au₄₉Ag₅.₅Pd₂.₃Cu₂₆.₉Si₁₆.₃ can be united using this structural model. This model may be useful for the interpretation of surface structure of other liquid alloys with a high glass forming ability. In addition, it suggests the possibility of guiding the design of the surface coating of solid containers for the stabilization of undercooled liquids.
- Subject
- modelling; undercooling; rapid solidification; metallic glasses; surface structure
- Identifier
- http://hdl.handle.net/1959.13/1299470
- Identifier
- uon:19883
- Identifier
- ISSN:0950-0839
- Language
- eng
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