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Spin waves in periodic magnetic structures—magnonic crystals
Propagation of spin waves (SWs) through a periodic multilayered magnetic structure is analyzed. It is assumed that the structure consists of ferromagnetic layers having the same thickness but different magnetizations. The wave spectrum obtained contains forbidden zones (stop bands) in which wave pro...
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| Published in: | Journal of magnetism and magnetic materials 2001-11, Vol.236 (3), p.320-330 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | English |
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| cited_by | cdi_FETCH-LOGICAL-c419t-d0713c2c4a38e3b957ead95f16c04763dd2c77337ed2cd12b7d49189554045973 |
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| cites | cdi_FETCH-LOGICAL-c419t-d0713c2c4a38e3b957ead95f16c04763dd2c77337ed2cd12b7d49189554045973 |
| container_end_page | 330 |
| container_issue | 3 |
| container_start_page | 320 |
| container_title | Journal of magnetism and magnetic materials |
| container_volume | 236 |
| creator | Nikitov, S.A. Tailhades, Ph Tsai, C.S. |
| description | Propagation of spin waves (SWs) through a periodic multilayered magnetic structure is analyzed. It is assumed that the structure consists of ferromagnetic layers having the same thickness but different magnetizations. The wave spectrum obtained contains forbidden zones (stop bands) in which wave propagation is prohibited. Introduction into the structure of the ferromagnetic layer with a different thickness breaks the structural symmetry and leads to a localization of the SW mode with the frequency lying in the stop band. Reflection of the wave by the structure of the finite length and transmission of the wave through the structure are also investigated. Numerical calculations of the wave dispersion and the transmission coefficients for symmetrical periodic structures as well as the structures with a defect are presented. Drawing an analogy from photonic crystals known in optics, such magnetic structures can be called one-dimensional (1-D) magnonic crystals (MCs). The possibilities of existence of the 2-D MCs are also discussed. |
| doi_str_mv | 10.1016/S0304-8853(01)00470-X |
| format | article |
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| ispartof | Journal of magnetism and magnetic materials, 2001-11, Vol.236 (3), p.320-330 |
| issn | 0304-8853 |
| language | eng |
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| source | ScienceDirect Journals |
| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Ferromagnetic layers Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures) Magnetic properties and materials Magnetic properties of surface, thin films and multilayers Magnetically ordered materials: other intrinsic properties Magnonic crystals Multilayers Physics Spin waves |
| title | Spin waves in periodic magnetic structures—magnonic crystals |
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