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https://doi.org/10.1186/1556-276X-8-115
Title: | Phononic and magnonic dispersions of surface waves on a permalloy/BARC nanostructured array | Authors: | Pan, H. Zhang, V.L. Di, K. Kuok, M.H. Lim, H.S. Ng, S.C. Singh, N. Adeyeye, A.O. |
Keywords: | Bandgaps Brillouin light scattering Magphonic crystal Phononic and magnonic dispersions |
Issue Date: | 2013 | Citation: | Pan, H., Zhang, V.L., Di, K., Kuok, M.H., Lim, H.S., Ng, S.C., Singh, N., Adeyeye, A.O. (2013). Phononic and magnonic dispersions of surface waves on a permalloy/BARC nanostructured array. Nanoscale Research Letters 8 (1) : 1-6. ScholarBank@NUS Repository. https://doi.org/10.1186/1556-276X-8-115 | Abstract: | Phononic and magnonic dispersions of a linear array of periodic alternating Ni80Fe20and bottom anti-reflective coating nanostripes on a Si substrate have been measured using Brillouin light scattering. The observed phononic gaps are considerably larger than those of laterally patterned multi-component crystals previously reported, mainly a consequence of the high elastic and density contrasts between the stripe materials. Additionally, the phonon hybridization bandgap has an unusual origin in the hybridization and avoided crossing of the zone-folded Rayleigh and pseudo-Sezawa waves. The magnonic band structure features near-dispersionless branches, with unusual vortex-like dynamic magnetization profiles, some of which lie below the highly-dispersive fundamental mode branch. Finite element calculations of the phononic and magnonic dispersions of the magphonic crystal accord well with experimental data. © 2013 Pan et al.; licensee Springer. | Source Title: | Nanoscale Research Letters | URI: | http://scholarbank.nus.edu.sg/handle/10635/82891 | ISSN: | 19317573 | DOI: | 10.1186/1556-276X-8-115 |
Appears in Collections: | Staff Publications |
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