Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10714242 | Physica B: Condensed Matter | 2011 | 4 Pages |
Abstract
The effect of ultrathin Fe underlayer on the strong in-plane magnetization of FePt magnetic thin film was investigated. This FePt thin film could be attained using the ultrathin Fe underlayer with 1Â nm thickness. The in-plane coercivity of FePt film with 20Â nm thickness grown on ultrathin Fe underlayer was high up to 7400Â Oe. However, its out-of-plane coercivity was extremely low to 350Â Oe compared to those of FePt thin films in other conventional studies. This result indicates that FePt thin film was strongly in-plane magnetized by ultrathin Fe underlayer. The strong ordering phase transformation kinetics and the high texturing to in-plane direction of the FePt thin film by ultrathin Fe underlayer were confirmed by Kinetics Monte Carlo (KMC) simulation and XRD measurement result, respectively. It is also supposed that they are associated with the reduction of an interface free energy between the film and the substrate with an introduction of ultrathin underlayer.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
S.H. Lee, S.H. Eun,