Low-Power Photo-Induced Precession of Magnetization in Ultra-Thin Co/Pd Multilayer Films
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説明
Photo-induced precession of magnetization (PIPM) has been studied in ultra-thin [Co/Pd]5 multilayered structures at the region of pump fluences F = 0.11 to 11 μJ/cm2. In a series of samples with tpd = 1.62 nm, precession amplitude has increased at tCo = 0.86 nm, around which magnetic anisotropy changes between in-plane (tCo > 0.86 nm) and out-of-plane (tCo ≤ 0.86 nm). When tPd was reduced in half (tpd = 0.81 nm) the amplitude of PIPM has increased significantly, which leads us to the observation of PIPM at F = 0.25 μJ/cm2, the regime of low energy excitation. A model which connects precession amplitude and parameters associated with spin dynamics has been developed, through which efficiency of energy transfer between electron and spin subsystems has been examined quantitatively.
収録刊行物
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- IEEE Transactions on Magnetics
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IEEE Transactions on Magnetics 49 (7), 3155-3158, 2013-07
Institute of Electrical and Electronics Engineers (IEEE)
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詳細情報 詳細情報について
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- CRID
- 1360846643027299328
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- ISSN
- 19410069
- 00189464
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- 資料種別
- journal article
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- データソース種別
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- Crossref
- KAKEN
- OpenAIRE