Magnetic Properties of Ultrathin TbFeCo Magnetic Films With Perpendicular Magnetic Anisotropy

In this study, we report on the experimental results of ultrathin TbFeCo films fabrications. The effects of annealing conditions on the magnetic characteristics of ultrathin TbFeCo magnetic films with various under- and capping-layers were explored. The effects of using SiNx, Al and Ti as capping- a...

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Veröffentlicht in:	IEEE transactions on magnetics 2009-10, Vol.45 (10), p.4023-4026
Hauptverfasser:	Lee, Ching-Ming, Ye, Lin-Xiu, Lee, Jia-Mou, Hsieh, Tung-Hsien, Syu, Jhih-Wei, Chen, Wen-Jaun, Huang, Chao-Yuan, Wu, Te-Ho
Format:	Artikel
Sprache:	eng
Schlagworte:	Aluminum Annealing Atomic layer deposition Coercive force Diffusion Diffusion layers Fabrication Magnetic anisotropy Magnetic films Magnetic properties Magnetic thin film Magnetism Perpendicular magnetic anisotropy rare-earth-transition metal Silicon compounds Surface treatment Titanium
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Beschreibung
Zusammenfassung:	In this study, we report on the experimental results of ultrathin TbFeCo films fabrications. The effects of annealing conditions on the magnetic characteristics of ultrathin TbFeCo magnetic films with various under- and capping-layers were explored. The effects of using SiNx, Al and Ti as capping- and under-layers are also investigated. We found that in contrast to the flat surface of SiN, the rugged interfaces induced by Al and Ti layers are beneficial in enhancing the perpendicular magnetic anisotropy for ultrathin TbFeCo films with thickness down to 3 nm. The STEM line scan shows the strong diffusion of Al atoms into TbFeCo layers. Annealing treatment can be used for control of coercivity from 85 Oe to 1 kOe.
ISSN:	0018-9464 1941-0069
DOI:	10.1109/TMAG.2009.2024887