期刊
APPLIED PHYSICS LETTERS
卷 102, 期 19, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4804990
关键词
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资金
- Department of Science and Technology, Government of India [SR/NM/NS-53/2010, INT/EC/CMS (24/233552), INT/JP/JST/P-23/09, SR/WOS-A/PS-27/2010]
- Department of Information Technology, Government of India [1(7)/2010/MC]
- Japan Science and Technology Agency [09158876]
- CSIR
- UGC, Government of India
Optically induced spin waves in Ni80Fe20 (permalloy) cross-shaped nanoelements are studied by time-resolved magneto-optical Kerr effect microscope. A strong anisotropy in the spin wave modes are observed with the orientation angle (phi) of the in-plane bias magnetic field. As phi deviates from 0 degrees a single resonant mode splits into a numbers of modes, while the powers of the higher frequency modes increase as phi increases from 0 to 45 degrees. The lowest frequency mode shows a four-fold configurational anisotropy. The mode of a single cross remains unaffected by the magnetostatic interaction of the neighbouring elements for phi = 0 degrees, while the effect increases with phi and becomes maximum at 45 degrees, making these elements interesting candidates as building blocks for magnonic devices. (C) 2013 AIP Publishing LLC.
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