| Autor: |
Shu-Fa, Li, Pan, He, Chu-Yuan, Cheng, Shi-Ming, Zhou, Tian-Shu, Lai |
| Předmět: |
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| Zdroj: |
Chinese Physics Letters; Jan2014, Vol. 31 Issue 1, p017502-017506, 5p |
| Abstrakt: |
A simple magnetic modulation structure of the exchange-coupling FePt/FeNi bilayer film is fabricated and studied for its magnetization dynamics using time-resolved magneto-optical polar Kerr spectroscopy. It is found that two spin-wave modes can be excited. One is fixed at ∼3.2 GHz in frequency for any external field and may serve as a frequency-stabilized spin-wave filter, while the other is external field dependent. In contrast, only the external field-dependent mode is excited in single-layer FeNi, supporting the localized origin of the mode at ∼3.2 GHz, which is confined to a thin exchange-coupling region. The other external field-dependent mode in frequency is attributed to the Kittel mode. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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