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Interfacial Structure of Lattice Mismatched bcc(110)/bcc(110) Transition Metal Superlattices

  • Eric E. Fullerton (a1), S. M. Mini (a2), A. S. Bommannavar (a3), C. H. Sowers (a1), S. N. Ehrlich (a4) and S. D. Bader (a1)...

Abstract

We present structural characterizations of a series of sputtered Fe/Nb and V/Nb superlattices by high-angle x-ray diffraction. Diffraction scans were performed with the scattering vector at various angles (χ) with respect to the layers. χ=0° diffraction spectra (normal to the layers) were fitted to a general structural model to determine the (110) lattice strains, interfacial disorder and interdiffusion. χ>0° spectra probe the lattice strain of the individual layers and the in-plane interfacial coherence. Both systems form incoherent interfaces above a critical modulation wavelength (ΛC). At ΛC, the Fe/Nb system undergoes a crystalline-to-amorphous transition while the V/Nb forms in-plane coherent interfaces.

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Interfacial Structure of Lattice Mismatched bcc(110)/bcc(110) Transition Metal Superlattices

  • Eric E. Fullerton (a1), S. M. Mini (a2), A. S. Bommannavar (a3), C. H. Sowers (a1), S. N. Ehrlich (a4) and S. D. Bader (a1)...

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