Oxygen modified growth of Gd on Mo(110)

• Published in: Surface science Vol. 331; pp. 961 - 964
• Main Authors: Mozley, S., Nicklin, C.L., James, M.A., Steadman, P., Norris, C., Lohmeier, M.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Lausanne Elsevier B.V 01.07.1995; Amsterdam Elsevier Science; New York, NY
• Subjects: Applied sciences; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Growth; Lanthanides; Low index single crystal surfaces; Materials science; Metal-metal interfaces; Metals. Metallurgy; Methods of deposition of films and coatings; film growth and epitaxy; Molybdenum; Nucleation; Oxygen; Physics; Surface structure; Vacuum deposition; X-ray scattering, diffraction, and reflection; Oxygen; Nucleation; Growth; Lanthanides; Low index single crystal surfaces; Metal-metal interfaces; X-ray scattering, diffraction, and reflection; Molybdenum; Surface structure; Oxygen additions; Impurities; Rare earths; Gadolinium; XRD; Experimental study; Vacuum deposition; Film growth
• ISSN: 0039-6028; 1879-2758
• DOI: 10.1016/0039-6028(95)00346-0

X-ray diffraction measurements have been made in real time during deposition of the rare earth Gd on the non-magnetic substrate Mo(110). For the clean surface at 300 K, the variation of the specularly reflected X-ray intensity with deposition time is consistent with the completion of a close-packed monolayer followed by increasingly disordered, multilayer, growth. Exposure of the Mo surface to 0.25 langmuir of oxygen prior to Gd deposition produced better defined intensity oscillations characteristic of improved layerwise growth. It is suggested that the oxygen creates nucleation sites which increases interlayer mass transport.