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Title: 〈001〉 textured polycrystalline current-perpendicular-to-plane pseudo spin-valves using Co{sub 2}Fe(Ga{sub 0.5}Ge{sub 0.5}) Heusler alloy

The orientation dependence of current-perpendicular-to-plane giant-magnetoresistance (CPP-GMR) was investigated by fabricating 〈001〉 textured polycrystalline pseudo spin valves (PSVs) with Co{sub 2}Fe(Ga{sub 0.5}Ge{sub 0.5}) (CFGG) Heusler alloy ferromagnetic layers and a Ag spacer. The PSV with 10 nm CFGG annealed at 400 °C exhibited the resistance-change area product (ΔRA) of 5.8 mΩ (MR ratio of 16%), the largest value reported for polycrystalline CPP-(P)SVs. The 〈001〉 textured CFGG PSV outperforms the 〈011〉 textured CFGG PSV possibly due to the reduced lattice mismatch or improved band matching at the CFGG/Ag interface.
Authors:
 [1] ;  [2] ; ; ;  [3] ;  [3] ;  [2]
  1. Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571 (Japan)
  2. (Japan)
  3. National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047 (Japan)
Publication Date:
OSTI Identifier:
22254094
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 20; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANNEALING; CRYSTAL DEFECTS; CURRENTS; HEUSLER ALLOYS; INTERFACES; LAYERS; MAGNETORESISTANCE; POLYCRYSTALS; SPIN; TEXTURE; VALVES