Journal article

Publication year: 1993

Pages: 1779-1785

Journal: Physical Review B

Volume number: 48

Issue number: 3

ISSN: 0163-1829

DOI Link: https://doi.org//10.1103/PhysRevB.48.1779

Publisher: American Physical Society

Abstract: 

The crystallographic aspects of the growth of ultrathin films of Fe on Au{001} are studied by means of quantitative low-energy electron diffraction (LEED) and Auger electron spectroscopy (AES). The first monolayer of Fe is found to be pseudomorphic to the Au{001} substrate with an interlayer spacing of 1.825 Å, and to be covered by a monolayer of Au at an interlayer distance of 1.85 Å, which acts as a surfactant. Thicker films of Fe [up to 45 layer equivalents (LE)] may be pseudomorphic and hence slightly strained (the lattice misfit is 0.6%) or equilibrium bcc with surface relaxation (the present analysis cannot distinguish between the two possibilities), but contain defects and disordered steps. Gold atoms are found to be segregated in the surface region of 45-LE Fe films, but mostly in a disordered arrangement. A comparison between the results obtained with two different computer programs for the calculation of LEED intensities finds that differences of 0.025 Å in the values of structural parameters may occur.

Harvard Citation style: Begley, A., Kim, S., Quinn, J., Jona, F., Over, H. and Marcus, M. (1993) Growth of ultrathin films of Fe on Au{001}, Physical Review B, 48(3), pp. 1779-1785. https://doi.org//10.1103/PhysRevB.48.1779

APA Citation style: Begley, A., Kim, S., Quinn, J., Jona, F., Over, H., & Marcus, M. (1993). Growth of ultrathin films of Fe on Au{001}. Physical Review B. 48(3), 1779-1785. https://doi.org//10.1103/PhysRevB.48.1779