Elastic softening in nanocrystalline silicon

Conference · Mon May 01 00:00:00 EDT 1989

DOI:https://doi.org/10.1557/PROC-153-33· OSTI ID:5492260

Phillpot, S R; Wolf, D; Lutsko, J F

It is pointed out that some of the generic physical properties of a nanocrystalline material are similar to those of a grain-boundary superlattice. The structure and elastic properties of a superlattice of twist boundaries on the (110) plane of silicon are calculated as a function of modulation wavelength using a three-body potential. All elastic moduli are found to be softened. This softening is attributed to the relatively small amount of structural disorder at the interfaces. 8 refs., 4 figs.

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: DOD; DOE/ER
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5492260
• Report Number(s): CONF-8904290-1; ON: DE90002268
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
CRYSTAL STRUCTURE
ELASTICITY
ELEMENTS
GRAIN BOUNDARIES
INTERFACES
MECHANICAL PROPERTIES
METALS
MICROSTRUCTURE
PHYSICAL PROPERTIES
SEMIMETALS
SILICON
SUPERLATTICES
TENSILE PROPERTIES