Surface morphology and magnetic anisotropy of Fe/MgO(001) films deposited at oblique incidence

Details Surface morphology and magnetic anisotropy of Fe/MgO(001) films deposited at oblique incidence Surface morphology and magnetic anisotropy of Fe/MgO(001) films deposited at oblique incidence

2008-10-27

arxiv.org/abs/0810.4929v1

Physics

Condensed Matter

Materials Science

3 pages, 4 figures

Scientific paper

10.1063/1.3075847

We have studied surface morphology and magnetic properties of Fe/MgO(001) films deposited at an angle varying between 0o and 60o with respect to the surface normal and with azimuth along the Fe[010] or the Fe[110] direction. Due to shadowing, elongated grains appear on the film surface for deposition at sufficiently large angle. X-ray reflectivity reveals that, depending on the azimuthal direction, films become either rougher or smoother for oblique deposition. For deposition along Fe[010] the pronounced uniaxial magnetic anisotropy (UMA) results in the occurrence of reversed two-step and of three-step hysteresis loops. For deposition along Fe[110] the growth-induced UMA is much weaker, causing a small rotation of the easy axes.

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