CoFe/IrMn spin-valves prepared on Cu islands

Umemoto, Takashi; Maeda, Atsushi; Oikawa, Satoru; Yoshioka, K.; Takahashi, S.; Tanuma, Toshio; Kume, Minoru; Shibata, Kenichi

doi:10.1109/20.706326

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Cited by 4 publications

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“…Fcc Ir Mn was first studied with NiFe layers [2] and was later shown to exhibit good properties (large exchange, good thermal stability) in standard "top" spin valve structures when exchange biased with Co Fe layers [8]- [10]. Underlayers have been proven to be critical on the promotion of the fcc (111) texture [2], [12] and exchange energies in the range 0.1-0.2 erg/cm have been achieved. GMR amplitude as high as 10% have been obtained with IrMn thickness in the sub-100 nm region [11].…”

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confidence: 97%

Inverted spin valves with IrMn biasing layer

et al. 2000

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Inverted IrMn-based spin valves (ISV) were fabricated with the aim of low thickness/high output dual spin valve applications. Optimized structures exhibit the following characteristics: = 750 Oe, = 18 5 /sq., 1 = 7 5% and = 250 C with IrMn thickness as low as 75 A. The blocking temperature distribution, however, exhibits non zero components from 150 C onwards. Accordingly, accelerated sheet films lifetime experiments and current heating on full read/write heads show that partial rotations of the pinned layer occur well below . These structures therefore appear to be insufficiently stable for disk-drive applications.

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