Computer simulation of the anomalous elastic behavior of thin films and superlattices
Conference
·
OSTI ID:6906941
Atomistic simulations are reviewed that elucidate the causes of the anomalous elastic behavior of thin films and superlattices (the so-called supermodulus effect). The investigation of free-standing thin films and of superlattices of grain boundaries shows that the supermodulus effect is not an electronic but a structural interface effect intricately connected with the local atomic disorder at the interfaces. The consequent predictions that (1) coherent strained-layer superlattices should show the smallest elastic anomalies and (2) the introduction of incoherency at the interfaces should enhance all anomalies are validated by simulations of dissimilar-material superlattices. 38 refs, 10 figs.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- DOE; DOD; USDOE, Washington, DC (United States); Department of Defense, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6906941
- Report Number(s):
- ANL/MSD/CP-77907; CONF-920927--1; ON: DE93004154; CNN: N00014-88-F-019
- Country of Publication:
- United States
- Language:
- English
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