〈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

Journal Article · Mon Nov 11 00:00:00 EST 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4829633· OSTI ID:22254094

Du, Ye ^[1]; Takahashi, Y. K.; Furubayashi, T. ^[2]

---

1. Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571 (Japan)
2. National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047 (Japan)

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.

• OSTI ID: 22254094
• Journal Information: Applied Physics Letters, Vol. 103, Issue 20; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
CRYSTAL DEFECTS
CURRENTS
HEUSLER ALLOYS
INTERFACES
LAYERS
MAGNETORESISTANCE
POLYCRYSTALS
SPIN
TEXTURE
VALVES