Structure Related Magnetic Dead Layer for Ultrathin Fe/Ir(111) Films

Author

Wei-Hsiang Chen ; Pei-Cheng Jiang ; Chen-Yuan Hsieh ; Jyh-Shen Tsay

Author_Institution

Dept. of Phys., Nat. Taiwan Normal Univ., Taipei, Taiwan

Volume

50

Issue

1

fYear

2014

fDate

Jan. 2014

Firstpage

1

Lastpage

4

Abstract

Magnetic properties and surface structure of ultrathin Fe/Ir(111) films have been investigated using the surface magneto-optic Kerr effect and low-energy electron diffraction. Layer-by-layer growth of Fe/Ir(111) is observed for the first three monolayers at room temperature. For Fe thinner than three monolayers, pseudomorphic growth of Fe films is observed. The layer distance is close to that of fcc(111) Fe. For Fe thicker than three monolayers, the surface structure can be identified to be related to the bcc(110) arrangement of Fe atoms in Kurdjumov-Sachs orientation. As the Fe thickness increases, the linear increase of the Kerr intensity is observed. The Kerr intensity comes from the bcc-Fe and a thin magnetic dead layer is observed at the interface.

Keywords

Kerr magneto-optical effect; interface magnetism; iridium; iron; low energy electron diffraction; magnetic thin films; metallic thin films; monolayers; surface magnetism; surface structure; Fe-Ir; Ir; Kerr intensity; Kurdjumov-Sachs orientation; bcc(110) arrangement; layer distance; layer-by-layer growth; low-energy electron diffraction; magnetic properties; monolayers; pseudomorphic growth; structure related magnetic dead layer; surface magneto-optic Kerr effect; surface structure; temperature 293 K to 298 K; ultrathin films; Atomic layer deposition; Iron; Lattices; Magnetic properties; Surface reconstruction; Surface topography; Fcc-Fe; iridium; iron; magneto-optic Kerr effect;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2276094

Filename

6693024