Magic-Size Equilibrium Shapes of Nanoscale Pb Inclusions in Al

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.471· OSTI ID:439080

Dahmen, U; Xiao, S ^[1]; Paciornik, S ^[2]; Johnson, E; Johansen, A ^[3]

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1. National Center for Electron Microscopy, LBNL, Berkeley, California (United States)
2. DCMM PUC-Rio, P.O. Box 38008, Rio de Janeiro, RJ 22463 (Brazil)
3. O/rsted Laboratory, Niels Bohr Institute, University of Copenhagen, Copenhagen (Denmark)

We show that the equilibrium shapes of small solid Pb inclusions embedded in an Al matrix are size dependent. Using high resolution electron microscopy we have observed that small inclusions a few nanometers in size adopt equilibrium shapes with smooth {l_brace}111{r_brace} facets. Inclusion dimensions follow preferred sizes shown to result from the nature of the residual strain which oscillates and decreases with size. As a result, the inclusion shape is controlled by the residual strain energy at small sizes and by the interface energy at larger sizes. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 439080
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 3 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
ELECTRON MICROSCOPY
INCLUSIONS
ION IMPLANTATION
LEAD
MATRIX MATERIALS
OSCILLATIONS
RESIDUAL STRESSES
SHAPE
SIZE
SOLID CLUSTERS
STRAINS