Ag induced enhancement of perpendicular magnetic anisotropy

• Published in: Surface science Vol. 495; no. 3; pp. L821 - L826
• Main Authors: Shern, C.S, Su, C.W, Wu, Y.E, Chen, S.H
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 20.12.2001; Amsterdam Elsevier Science; New York, NY
• Subjects: Alloys; Auger electron spectroscopy; Cobalt; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Interface states; Low energy electron diffraction (LEED); Magnetic measurements; Magnetic properties and materials; Magnetic properties of monolayers and thin films; Magnetic properties of surface, thin films and multilayers; Physics; Platinum; Silver; Low energy electron diffraction (LEED); Silver; Platinum; Alloys; Magnetic measurements; Auger electron spectroscopy; Interface states; Cobalt; Temperature dependence; Kerr magneto-optical effect; Magnetic hysteresis; Solid-solid interfaces; Experimental study; AES; Interface structure; Metallic thin films; Transition elements; Monolayers; Crystal faces; LEED; Perpendicular magnetic anisotropy; Magnetic properties
• ISSN: 0039-6028; 1879-2758
• DOI: 10.1016/S0039-6028(01)01610-7

Some interesting magnetic properties were observed after Ag ultrathin films were deposited on Co/Pt(1 1 1). The spin reversal of Co can be prevented when Ag atoms cap Co on Pt(1 1 1). The out-of-plane magnetization has a significant enhancement after annealing at high temperature. The Curie temperature increases from 625 to 710 K as 1 ML of Ag is deposited on 1 ML Co/Pt(1 1 1). The change of surface anisotropy and the formation of a Co–Pt alloy are possible mechanisms for the magnetization enhancement.