Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5490730 | Journal of Magnetism and Magnetic Materials | 2017 | 6 Pages |
Abstract
Co3Pt alloy thin films were deposited on the glass substrate at room temperature (RT) and 300 °C, which showed high perpendicular magnetic anisotropy (PMA) and isotropy magnetic behaviors, respectively. Co3Pt HCP (0002) planes grew along the substrate plane for the films deposited at RT. The easy axis [0001] was consequently vertical to the substrate surface and obtained the predominant PMA. Large magnetic domains and sharp boundary also supported high PMA in RT-deposited samples. On the other hand, the PMA was significantly decreased with increasing the deposition temperature from RT to 300 °C. Hard HCP(0002) and soft A1(111) co-existed in the film and the magnetic exchanged coupling between these two phases induced isotropy magnetic behavior. In addition, the various thicknesses (t) of the RT-deposited Co3Pt films were deposited with different base pressures prior to sputtering. The Kerr rotation loops showed high PMA and out-of-plane squareness (Sâ¥) of ~0.9 were found in low base pressure chamber. Within high base pressure chamber, Co3Pt films just show magnetic isotropy behaviors. This study provides a fabrication method for the preparation of high PMA HCP-type Co3Pt films on the glass substrate without any underlayer at RT. The results could be the base for future development of RT-deposited magnetic alloy thin film with high PMA.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Yu-Shen Chen, Hong-Yu Dai, Yi-Wei Hsu, Sin-Liang Ou, Shi-Wei Chen, Hsi-Chuan Lu, Sea-Fue Wang, An-Cheng Sun,