|Title||Edge-modulated perpendicular magnetic anisotropy in [Co/Pd](n) and L1(0)-FePt thin film wires|
|Publication Type||Journal Article|
|Year of Publication||2015|
|Authors||Zhang, J, Ho, P, Currivan-Incorvia, JAnne, Siddiqui, SA, Baldo, MA, Ross, CA|
|Journal||Applied Physics Letters|
Thickness modulation at the edges of nanostructured magnetic thin films is shown to have important effects on their perpendicular magnetic anisotropy. Thin film wires with tapered edges were made from [Co/Pd](20) multilayers or L1(0)-FePt films using liftoff with a double-layer resist. The effect of edge taper on the reversal process was studied using magnetic force microscopy and micromagnetic modeling. In [Co/Pd](20), the anisotropy was lower in the tapered edge regions which switched at a lower reverse field compared to the center of the wire. The L1(0)-FePt wires showed opposite behavior with the tapered regions exhibiting higher anisotropy. (C) 2015 AIP Publishing LLC.