Spin scattering and heat assisted switching of a magnetic...

Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal – Magnetic field

Reexamination Certificate

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C257S421000, C257SE27005, C257SE43001

Reexamination Certificate

active

07126202

ABSTRACT:
A method and system for providing a magnetic element is disclosed. The magnetic element include providing a pinned layer, a spacer layer, and a free layer. The method and system also include providing a heat assisted switching layer and a spin scattering layer between the free layer and the heat assisted switching layer. The spin scattering layer is configured to more strongly scatter majority electrons than minority electrons. The heat assisted switching layer is for improving a thermal stability of the free layer when the free layer is not being switched. Moreover, the magnetic element is configured to allow the free layer to be switched due to spin transfer when a write current is passed through the magnetic element.

REFERENCES:
patent: 5695864 (1997-12-01), Slonczewski
patent: 6700753 (2004-03-01), Singleton et al.
patent: 6838740 (2005-01-01), Huai et al.
patent: 2005/0180202 (2005-08-01), Huai et al.
Geoff Anderson, et al., “CoFe/IrMn Exchange Biased Top, Bottom, and Dual Spin Valves”, Journal of Applied Physics, vol. 87, No. 9, p. 6989-6991, (May 1, 2000).
Ki-Seok Moon, et al., “PtMn-Based Spin-Dependent Tunneling Materials with Thin Alumina Barrier Fabricated by Two-Step Natural Oxidation”, Journal of Applied Physics, vol. 91, No. 10, p. 7986-7967, (May 15, 2002).
Kebin Li, et al., “Abnormal Temperature Dependence of Exchange Bias in the NiFe5/Ta0.2/InMn8 System”, Journal of Applied Physics, vol. 93, No. 10, p. 6614-6616 (May 15, 2003).
Minn-Tsong Lin, et al., “Thermally Assisted Oscillatory Interlayer Exchange Bias Coupling”, Physical Review, B, vol. 63, p. 100404-1-4 (2001).
J.A. Katine, et al., “Current Driven Magnetization Reversal and Spin-Wave Excitations in Co/Cu/Co Pillars”, Physical Review Letters, vol. 84, No. 14, p. 3149-3152 (Apr. 3, 2000).
L. Berger,Emission of spin waves by a magnetic multilayer traversed by a current,The American Physical Society, Physical Review B, vol. 54, No. 13, Oct. 1996, pp. 9353-9358.
J.C. Slonczewski,Current-driven excitation of magnetic multilayers,Journal of Magnetism and Magnetic Materials, vol. 159, 1996, pp. L1-L7.
F.J. Albert, et al.,Spin-polarized current switching of a Co thin film nanomagnet,Applied Physics Letters, vol. 77, No. 23, Dec. 2000, pp. 3809-3811.

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