The FePt L10 Phase Transformation in Thin Films using Multiple Laser Pulsing

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dc.contributor.author Inaba, Yuki
dc.contributor.author Thompson, Gregory B.
dc.contributor.author Harrell, J. W.
dc.contributor.author Klemmer, Tim
dc.contributor.author Kubota, Yukiko
dc.date.accessioned 2018-11-12T21:02:14Z
dc.date.available 2018-11-12T21:02:14Z
dc.date.issued 2010-03-04
dc.identifier.citation Inaba, Y., et al. (2010): The FePt L10 Phase Transformation in Thin Films using Multiple Laser Pulsing. Journal of Applied Physics, 107(5). en_US
dc.identifier.uri http://ir.ua.edu/handle/123456789/4864
dc.description.abstract A series of ≈12 nm thick FePt thin films deposited onto glass substrates have been annealed with multiple 1064 nm wavelength laser pulses. The fluence was varied using pulse widths of 10.0, 5.0, and 2.5 ms. The peak temperature for each individual pulse was kept near 700 °C. The A1 to L10 phase transformation was confirmed by x-ray diffraction. A single pulse was not sufficient to obtain a fully ordered state. A maximum order parameter of 0.89 and coercivity of 10.6 kOe was obtained after 5×10 ms pulses. This particular annealed film showed the greatest amount of grain growth with a mean size of 55.1 nm. This grain size is 20% smaller than that of a furnace annealed sample which was annealed for 60 s and yielded an approximately equivalent order parameter. Similar order parameters, grain sizes, and coercivity values were observed for films that had equivalent total annealing times regardless of pulse widths. en_US
dc.format.mimetype application/pdf en_US
dc.subject Magnetic hysteresis en_US
dc.subject Crystallography en_US
dc.subject Annealing en_US
dc.subject Glass en_US
dc.subject X-ray diffraction en_US
dc.subject Thin films en_US
dc.subject Lasers en_US
dc.subject Phase transitions en_US
dc.subject Superlattices en_US
dc.subject Crystallographic defects en_US
dc.title The FePt L10 Phase Transformation in Thin Films using Multiple Laser Pulsing en_US
dc.type text en_US


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