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Title: Spatiotemporally separating electron and phonon thermal transport in L1{sub 0} FePt films for heat assisted magnetic recording

We report the spatio-temporal separation of electron and phonon thermal transports in nanostructured magnetic L1{sub 0} FePt films at the nanometer length scale and the time domain of tens of picosecond, when heated with a pulsed laser. We demonstrate that lattice dynamics measured using the picosecond time-resolved laser pump/X-ray probe method on the FePt (002) and Ag (002) Bragg reflections from different layers provided the information of nanoscale thermal transport between the layers. We also describe how the electron and phonon thermal transports in nanostructured magnetic thin films were separated.
Authors:
 [1] ;  [2] ; ; ; ;  [3] ; ; ;  [1] ;  [4]
  1. Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  2. (Singapore)
  3. Department of Materials Science and Engineering, National University of Singapore, 117576 Singapore (Singapore)
  4. Department of Physics Education and Institute of Fusion Science, Chonbuk National University, Jeonju 561-756 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22304494
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 24; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BRAGG REFLECTION; ELECTRONS; IRON ALLOYS; LASER RADIATION; LAYERS; NANOSTRUCTURES; OPTICAL PUMPING; PHONONS; PLATINUM ALLOYS; RECORDING SYSTEMS; THERMAL CONDUCTIVITY; THIN FILMS; TIME RESOLUTION; X RADIATION