| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1657714 | Surface and Coatings Technology | 2013 | 4 Pages |
Rhombohedral L11 type CoCuPt superstructure thin film with different thickness (t) were prepared on glass, Pt(111)/glass, and MgO(111) substrates. Soft magnetic property was obtained in CoCuPt/glass. When the film was deposited on MgO(111) substrate, the Hc is 2.2 kOe as t = 50 nm, and then it decreased to 0.65 kOe with reducing the t to 10 nm. This result is opposite of the properties in CoCuPt/Pt/glass. When the MgO(111) substrate was replaced by Pt/glass, the Hc is increased from 1.7 kOe to 2.7 kOe as the t is reduced from 50 nm to 4 nm. The nucleation field (Hn) of CoCuPt/Pt bilayer becomes more negative in thinner t indicated stronger impendence force for domain wall motion. The improvement of Hc in CoCuPt/Pt bilayer was attributed to smaller lattice mismatch at CoCuPt/Pt interface and the grain boundary pinning for domain wall motion. This suggested that magnetic properties of L11 CoCuPt films might be well controlled by adjusting the microstructure.
► Recently identified metastable superlattice of CoPt with strong perpendicular magnetic anisotropy. ► Prepared L11 CoPtCu thin film with high Hc on glass substrates. ► Continuous morphology and large Ku in L11 CoPt thin films with reduced thickness. ► Well controllable magnetic properties of L11 CoCuPt films by adjusting the microstructure.
