dc.contributor.author | Wilks, R. | en_GB |
dc.contributor.author | Hicken, R.J. | en_GB |
dc.contributor.author | Ali, M. | en_GB |
dc.contributor.author | Hickey, B.J. | en_GB |
dc.date.accessioned | 2013-01-18T10:20:59Z | en_GB |
dc.date.accessioned | 2013-03-20T13:12:19Z | |
dc.date.issued | 2005 | en_GB |
dc.description.abstract | Ultrafast demagnetization has been studied in Si/Pt(160 Å)/[Co25Ni75(x)/Pt(8 Å)]20 (x = 3, 4.5, and 6 Å) multilayers with perpendicular anisotropy by magneto-optical pump-probe measurements in the polar geometry. Time-resolved measurements made in the saturated state showed that maximum demagnetization was achieved within 300 fs. Hysteresis loops were measured at a time delay of 1.3 ps for temperatures from 20 to 300 °C. The Curie temperature was found to increase from 150 to 250 °C with increasing Co25Ni75 thickness. By comparing the loops obtained with and without pump excitation, the increase in electron temperature due to the pump was estimated to be about 60 K. | en_GB |
dc.identifier.citation | Vol. 97 (10), article 10A705 | en_GB |
dc.identifier.doi | 10.1063/1.1847991 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10036/4172 | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | American Institute of Physics | en_GB |
dc.relation.url | http://dx.doi.org/10.1063/1.1847991 | en_GB |
dc.subject | cobalt alloys | en_GB |
dc.subject | nickel alloys | en_GB |
dc.subject | platinum | en_GB |
dc.subject | silicon | en_GB |
dc.subject | ferromagnetic materials | en_GB |
dc.subject | elemental semiconductors | en_GB |
dc.subject | magnetic multilayers | en_GB |
dc.subject | demagnetisation | en_GB |
dc.subject | perpendicular magnetic anisotropy | en_GB |
dc.subject | magneto-optical effects | en_GB |
dc.subject | magnetic hysteresis | en_GB |
dc.subject | Curie temperature | en_GB |
dc.title | Ultrafast demagnetization of Co 25Ni 75/Pt multilayers with perpendicular anisotropy at elevated temperatures | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2013-01-18T10:20:59Z | en_GB |
dc.date.available | 2013-03-20T13:12:19Z | |
dc.identifier.issn | 0021-8979 | en_GB |
dc.description | Copyright © 2005 American Institute of Physics | en_GB |
dc.identifier.eissn | 1089-7550 | en_GB |
dc.identifier.journal | Journal of Applied Physics | en_GB |