A complex magnetic structure of ultrathin Fe films on Rh (001) surfaces

被引:10
|
作者
Takada, Masaki [1 ]
Gastelois, Pedro Lana [1 ,2 ]
Przybylski, Marek [1 ,3 ]
Kirschner, Juergen [1 ,4 ]
机构
[1] Max Planck Inst Mikrostrukturphys, D-06120 Halle, Germany
[2] Ctr Desenvolvimento Tecnol Nucl, Serv Nanotecnol, BR-31270901 Belo Horizonte, MG, Brazil
[3] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, PL-30059 Krakow, Poland
[4] Univ Halle Wittenberg, Nat Wissensch Fak 2, D-06120 Halle, Germany
关键词
Magnetism of nanostructures; Magnetic measurements; Scanning tunneling microscopy; Surface structure; OVERLAYERS;
D O I
10.1016/j.jmmm.2012.10.010
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We conducted a structural and magnetic analysis of ultrathin Fe films on Rh (001) surfaces by using low electron energy diffraction (LEED), magneto-optical Kerr effects (MOKE) and spin-polarized scanning tunneling microscopy (SP-STM). The films in the investigated thickness range up to 6 monolayers (ML) are pseudomorphic to the Rh (001) substrate. While Fe films thinner than 3 ML grow layer-by-layer at room temperature (RT), Fe films thicker than 4 ML form islands. 1 ML Fe films do not show any hysteresis loops even at low temperature. Polar hysteresis loops for the 2 ML and 3 ML thick films appear at low temperatures. When 1 ML thick Fe films were studied by Cr- and Fe-coated W tips, a (2 x 3) and stripe structures were observed, respectively. The structures originate from a complex magnetic structure of 1 ML Fe. Based on the SP-STM results we propose a spin configuration model of a 1 ML Fe film. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:95 / 100
页数:6
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