Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 499, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2019.166072
Keywords
Spin waves excitation; Exchange constant; Oblique angle deposition; Gilbert damping
Funding
- National Natural Science Foundation of China [51601093, 51571121, 11604148, 61427812]
- Fundamental Research Funds for the Central Universities [30916011345]
- Natural Science Foundation of Jiangsu Province [BK20160833, BK20160831]
- China Postdoctoral Science Foundation Funded Project [2015M571285, 2016M601811, 2016M591851]
- Postdoctoral Science Foundation Funded Project of Jiangsu Province [1601268C]
- Key Research & Development Program of Jiangsu Province [BE2017102]
- Special Fund for the Transformation of Scientific and Technological Achievements in Jiangsu Province [BA2017121]
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Spin waves play a vital role as potential data carriers in low power wave-like computing and high-frequency spintronic devices, which stimulate intensive studies on the efficient excitation of spin waves in magnetic thin films. Here, we suggest a controllable approach for the efficient excitation of perpendicular standing spin waves (PSSWs) in a series of CoFeB/Si thin films by the oblique angle deposition technique. It is experimentally demonstrated that the intensity of the PSSW mode can be enhanced significantly with increased oblique angle, and a comparable intensity of spin wave to that of uniform FMR mode is achieved at an oblique angle of 39 degrees. Moreover, the dependence of in-plane anisotropy field H-k, exchange constant A, as well as intrinsic Gilbert damping a on oblique deposition angle are also investigated.
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