| Autor: |
Sang-Jun Yun, Sug-Bong Choe, Jae Chul Lee, Kyoung-Ho Shin |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
Journal of the Korean Magnetics Society. 21:204-207 |
| ISSN: |
1598-5385 |
| DOI: |
10.4283/jkms.2011.21.6.204 |
| Popis: |
We developed a time-resolved magneto-optical Kerr effect microscope system to investigate ultrafast magnetization dynamics. Based on the pump-probe method, 0.1-ps time resolution was achieved by use of a fs Ti:Sapphire laser. The magnetization dynamics was then measured on Pt/Co/Pt thin films with various Co thicknesses. All the samples exhibited ultrafast demagnetization within a few ps by direct heating of pump laser. Some thicker samples showed precessional motion of magnetization, from which the Gilbert damping constant was determined based on the Landau-Lifshitz-Gilbert equation. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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