Encapsulation-induced stabilization of dimensionally restricted metallic alloy wires

Journal Article · Wed Sep 01 00:00:00 EDT 2010 · Acta Materialia Elsevier

DOI:https://doi.org/10.1016/j.actamat.2010.06.008· OSTI ID:1164059

D.Sugar, Joshua ^[1]; T.McKeown, Joseph ^[2]; Radmilovic, Velimir ^[3]; M. Glaeser, Andreas ^[1]; Gronsky, Ronald ^[1]

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1. University of California, Berkeley
2. Arizona State University
3. Lawrence Berkeley National Laboratory

Compositionally modulated CuNiFe alloys wires were grown on sapphire substrates in two dimensionally restricted configurations, the first by dewetting thin films on crystallographically faceted free surfaces and the second by enclosure within lithographically sculpted cavities. Samples were annealed at elevated temperature to promote evolution towards chemical and morphological equilibrium. Surface wires of limited length resulted from the break up of thin films along the long axes of substrate facets. Encapsulated wires oriented along specific crystallographic directions developed stable low energy facets along their lengths and resisted both dewetting and Rayleigh instabilities, enabling fabrication of stable, oriented, modulated (Cu/NiFe) structures.

• Research Organization: John Spence/Arizona State University
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• DOE Contract Number: FG03-02ER45996
• OSTI ID: 1164059
• Journal Information: Acta Materialia Elsevier, Vol. 58, Issue 16
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Energy filtered transmission electron microscopy
Wetting
Transmission electron microscopy
Capillary phenomena
Spinodal decomposition