Journal of Applied Physics -- May 1, 2000 -- Volume 87, Issue 9
pp. 5475-5477 

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Temperature dependent magnetic domain structure in ultrathin Fe films on
Cr(100)

      H. Hopster 
      Department of Physics and Astronomy, University of California,
Irvine, California 92697 

Magnetic microscopy is used to study the temperature dependent
magnetization structures in 2 nm Fe films on Cr(100). Above the Cr Néel
temperature, the Fe films can be magnetized into a single
domain state. When the films are cooled below the Néel temperature the Fe
magnetization has a tendency to turn perpendicular (in-plane) resulting in
a spatially varying magnetization direction. The
resulting magnetization structures are highly reproducible. The tendency
of the Fe magnetization to rotate is attributed to frustration due to
atomic steps. It is suggested that the local angle of
magnetization rotation reflects the average step density. ©2000 American
Institute of Physics. 

PII: S0021-8979(00)65608-6 
DOI: 10.1063/1.373377 
PACS: 75.70.Kw, 75.50.Bb, 75.70.Ak, 75.50.Ee, 75.70.Cn, 75.30.Kz,
75.60.Ch, 75.60.Ej