| AVS 61st International Symposium & Exhibition | |
| Magnetic Interfaces and Nanostructures | Monday Sessions |
| Session MI+EM-MoM |
| Session: | Interfacial Effects in Oxide Heterostructures |
| Presenter: | Robbyn Trappen, West Virginia University |
| Authors: | R. Trappen, West Virginia University M.B. Holcomb, West Virginia University J. Zhou, West Virginia University C.-Y. Huang, West Virginia University Y.-H. Chu, National Chiao Tung University, Taiwan, Republic of China V. Tra, National Chiao Tung University, Taiwan, Republic of China |
| Correspondent: | Click to Email |
Magnetic dead layers are a phenomenon in which a normally ferromagnetic material loses its magnetization below a critical thickness, which poses a problem for thin film applications. Density functional calculations predict the behavior of the dead layer in complex oxide films to be antiferromagnetic, which is attributed to interdiffusion of the magnetic film into the neighboring layers. Here, we investigate the transition from ferromagnetic to antiferromagnetic behavior in the complex oxide La0.7Sr0.3MnO3 using x ray magnetic linear and circular dichroism on the Mn L-edge (2p to 3d transition). These measurements were taken at the Advanced Light Source at Lawrence Berkeley National Labs. If the mechanism of the formation of the dead layers is understood, it can potentially be reversed and the same physics may be able to even enhance the magnetization beyond its bulk parameter.