Micromagnetic states in Fe (001) rectangular epitaxial microstructures: The effect of magnetic anisotropy and aspect ratio

Size and orientation effect on micromagnetic states in rectangular epitaxial Fe (011) microstructures

“…The same was found in our previously published [17] results for Fe(001). We attribute this to the magnetic probe disturbance of the magnetic state during magnetic structure imaging.…”

“…While coming from (001) symmetry [17] to (011) symmetry (this paper) an in-plane magnetic anisotropy changes from two-to single-axis anisotropy. This leads to appearing the strip domain states that were not previously found in Fe (001) rectangles.…”

“…Epitaxial Fe films were grown on the A-plane of sapphire Al 2 O 3 (11)(12)(13)(14)(15)(16)(17)(18)(19)(20) with a Mo seed layer 10 nm thick by pulsed laser deposition in ultrahigh vacuum. The thickness of Fe (011) films was 60 nm and was controlled with a profilometer.…”

“…At the structure width 0.6 mm this ratio was 10% and grew as the microstructure width became smaller. This state is defined as quasivortex similarly to the definition in [17]. The lateral sizes of the strip domain and the vortex state depend on the structure width but are independent of AR.…”

“…A systematic study of size and orientation dependence of micromagnetic states in microstructures fabricated from epitaxial Fe (001) films was carried out in [17]. Diagrams of micromagnetic states were constructed.…”