Coherency Strain Modeling of Elastic Moduli in CU/NB Multilayers
- 1 January 1988
- journal article
- Published by Springer Nature in MRS Proceedings
Abstract
An anomalous decrease in the elastic moduli of Cu/Nb multilayers has been observed via acoustic wave measurements. The decrease occurs for (111) fcc Cu and (110) bcc Nb layered structures with repeat periods between 1 and 5 nm. The coherency strain model has been used to simulate modulus enhancement in noble/transition metal multilayers. This approach addresses the atomic displacements corresponding with the lattice distortions of biaxially stressed layers. Elastic moduli are derived with respect to higher order differentials of a Born-Mayer type potential for nearest neighbor ions. The elastic moduli anomalies of Cu/Nb multilayers will be modelled within this conceptual framework.Keywords
This publication has 17 references indexed in Scilit:
- Modelling the supermodulus effect in metallic multilayersJournal of Physics F: Metal Physics, 1988
- Role of lattice matching in epitaxy: Novel Ce phase and new fcc-bcc epitaxial relationshipPhysical Review B, 1987
- Surface waves in Au/Cr superlatticesPhysical Review B, 1987
- Epitaxy at {111}fcc/{110}bcc metal interfacesApplications of Surface Science, 1985
- Epitaxy of metals on metalsApplications of Surface Science, 1982
- X-ray scattering from multilayers of NbCuPhysical Review B, 1981
- New Class of Layered MaterialsPhysical Review Letters, 1980
- Geometric factors in f.c.c. and b.c.c. metal-on-metal epitaxy III. The alignments of (111) f.c.c.-(110) b.c.c. epitaxed metal pairsPhilosophical Magazine A, 1978
- Enhanced elastic modulus in composition-modulated gold-nickel and copper-palladium foilsJournal of Applied Physics, 1977
- Changes of the elastic constants of V, Nb, and Ta by hydrogen and deuteriumPhysica Status Solidi (a), 1976