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Title: Effects of B additions in FePt and FePt:C films

B was co-sputtered with FePt films, leading to a granular structure; however, in addition to segregating at grain boundaries, local bonding of Fe-B was formed, which suppressed the ordering of FePt and thus degraded the perpendicular anisotropy. A boron capping layer was deposited on FePt:C (28 vol. %) films and B diffused into FePt:C grain boundaries during post-annealing. FePt:(B, C) films revealed a reduced grain size of 5.5 nm and perpendicular coercivity of 2T. Co-additions of B and C into FePt films may provide an alternative tuning knob to manipulate the microstructure and magnetic anisotropy of FePt films.
Authors:
; ; ; ;  [1]
  1. Department of Material Science and Engineering, National Tsing Hua University, Hsinchu 300, Taiwan (China)
Publication Date:
OSTI Identifier:
22273879
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; 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; ANISOTROPY; ANNEALING; BORON; COERCIVE FORCE; GRAIN BOUNDARIES; GRAIN SIZE; INTERMETALLIC COMPOUNDS; IRON; LAYERS; PLATINUM; SPUTTERING; THIN FILMS