Ultrathin Vanadium Films on Cu(001): Structure and Magnetism

Abstract

X-ray photoelectron diffraction (XPD), low energy electron diffraction (LEED), and magnetic linear dichroism in angular distributions of photoelectrons (MLDAD) have been used to study the structural and magnetic properties of V thin films on Cu(001). For room-temperature growth, XPD and LEED data indicate that below 1 monolayer (ML), equivalent V films exhibit a (2x1) structure that evolves to four domains of bcc (110) at coverages above 1 ML. This multi-domain structure produces a LEED pattern often referred to as '(3x1)'. This structure persists to V coverages as high as 100 ML, and the LEED and XPD angular scans indicate that V in these films retains the bulk V lattice constant. MLDAD results for 1-5 ML V films at room temperature and at 150 K provide no evidence for in-plane magnetic ordering. Annealing to 450°C results in V clustering at low coverages accompanied by Cu diffusion. For thick V films, the primary affect of annealing is interdiffusion of Cu and V.

Department(s)

Physics

Keywords and Phrases

Annealing; Copper; Film growth; Low energy electron diffraction; Magnetic properties; Magnetism; Magnetization; Metallic films; Monolayers; Surface structure; Ultrathin films; X ray photoelectron spectroscopy; Magnetic linear dichroism in angular distributions; Room temperature growth; Ultrathin vanadium films; X ray photoelectron diffraction

International Standard Serial Number (ISSN)

0039-6028

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2000 Elsevier, All rights reserved.

Publication Date

01 Mar 2000

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