Thin film multilayers for magnetic heads

Zeltser, A.; Jagieliński, T.

doi:10.1016/0956-716x(94)90181-3

Cited by 3 publications

(2 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus there are enough experimental evidences that an alloy forms of Co-Cu (or Ag) under specific conditions. Small magnetic particles with a significant MR at room temperature are especially important as ultra high density magnetic reading or writing heads [8,9,[16][17][18]. There are two basic types of magnetic recording heads; (i) inductive and (ii) magnetoresistive.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Granular GMR Sensors of Co-Cu and Co-Ag Nanoparticles Synthesized through a Chemical Route Using NaBH4

Ram¹,

Frankwicz²

2001

phys. stat. sol. (a)

View full text Add to dashboard Cite

Granular Co100—xCux and Co100—xAgx, x = 25 to 85, are obtained by co‐reduction of the metal cations dispersed in water with NaBH4 as the reducing agent. In either series, the as prepared sample has an fcc structure. The formation of it in this structure in this reaction is sensitive to its composition and other experimental conditions. No amorphous phase is present in a significant amount to appear in X‐ray diffraction. Impurities from elemental Co or Cu persist in Co, x < 25, or Cu, x > 75, rich compositions. A significant magnetoresistance (MR) appears in 10 to 30 nm diameter granules in the samples at x = 70 to 90. The maximum value of it is found to be 48% in Co100–xCux, at x ≈ 15, and 38% in Co100—xAgx, at x ≈ 25, at 2 to 5 K. Both of the series are ferromagnetic with magnetic moment as high as 1.85μB (1.63μB at 295 K) per Co atom (which compares to the 1.75μB value in fcc Co) and the coercivity as high as 60 kA m—1 (41 kA m—1 at 295 K) at 2 K. Even if part of this huge MR extends to persist to room temperature along with the other magnetic properties would be sufficient enough for applications in read or write head and related devices and components.

show abstract

Section: Introductionmentioning

confidence: 99%

“…There are two basic types of magnetic recording heads; (i) inductive and (ii) magnetoresistive. Superior technology of MR head over the inductive is developing very fast [4,18]. The underlying physical principles which govern the recording and reproducing processes in the two examples are very different in nature.…”

Section: Introductionmentioning

confidence: 99%