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Title: Engineering Gilbert damping by dilute Gd doping in soft magnetic Fe thin films
Authors: Zhang, W 
Jiang, S
Wong, PKJ 
Sun, L
Wang, YK
Wang, K
de Jong, MP
van der Wiel, WG
van der Laan, G
Zhai, Y
Keywords: Science & Technology
Physical Sciences
Physics, Applied
Issue Date: 7-May-2014
Citation: Zhang, W, Jiang, S, Wong, PKJ, Sun, L, Wang, YK, Wang, K, de Jong, MP, van der Wiel, WG, van der Laan, G, Zhai, Y (2014-05-07). Engineering Gilbert damping by dilute Gd doping in soft magnetic Fe thin films. 58th Annual Conference on Magnetism and Magnetic Materials 115 (17). ScholarBank@NUS Repository.
Abstract: By analyzing the ferromagnetic resonance linewidth, we show that the Gilbert damping constant in soft magnetic Fe thin films can be enhanced by ∼6 times with Gd doping of up to 20%. At the same time, the magnetic easy axis remains in the film plane while the coercivity is strongly reduced after Gd inclusion. X-ray magnetic circular dichroism measurements reveal a strong increase in the orbital-to-spin moment ratio of Fe with increasing Gd concentration, in full agreement with the increase in the Gilbert damping obtained for these thin films. Combined with x-ray diffraction and vibrating sample magnetometry, the results demonstrate that the FeGd thin films with dilute Gd doping of up to 20% are promising candidates for spin-transfer-torque applications in soft magnetic devices, in which an enhanced damping is required. © 2014 AIP Publishing LLC.
Source Title: 58th Annual Conference on Magnetism and Magnetic Materials
ISSN: 0021-8979
DOI: 10.1063/1.4862091
Appears in Collections:Staff Publications

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