Spin transfer magnetic elements with spin depolarization layers

Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode

Reexamination Certificate

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C257S421000

Reexamination Certificate

active

10829313

ABSTRACT:
A method and system for providing a magnetic element is disclosed. The method and system include providing a free layer, a spacer layer, and a pinned layer. The free layer is ferromagnetic and has a free layer magnetization. The spacer layer is nonmagnetic and resides between the pinned and free layers. The pinned layer includes first and second ferromagnetic layers having first and second magnetizations, a nonmagnetic spacer layer, and a spin depolarization layer. Residing between the first and second ferromagnetic layers, the nonmagnetic spacer layer is conductive and promotes antiparallel orientations between the first and second magnetizations. The spin depolarization layer is configured to depolarize at least a portion of a plurality of electrons passing through it. The magnetic element is also configured to allow the free layer magnetization to change direction due to spin transfer when a write current is passed through the magnetic element.

REFERENCES:
patent: 6532164 (2003-03-01), Redon et al.
patent: 6809909 (2004-10-01), Hou et al.
patent: 2002/0105827 (2002-08-01), Redon et al.
patent: 2003/0007398 (2003-01-01), Daughton et al.
patent: 2003/0059588 (2003-03-01), Hannah et al.
J.F. Albert, et al, “Polarized Current Switching of a CO Thin Film Nanomagnet”, American Institute of Physics, vol. 77, No. 23, Dec. 4, 2000, pp. 3809-3811.
J.A. Katine, et al, “Current-Driven Magnetization Reversal and Spin-Wave Excitations in Co/Cu/Co Pillars”, the American Physical Society, vol. 84, No. 14, Apr. 3, 2000, pp. 3149-3151.
E.G. Myers, et al, “Point-Contact Studies of Current-Controlled Domain Switching in Magnetic Multilayers” Journal of Applied Physics, vol. 87, No. 9, May 1, 2000, pp. 5502-5503.
J.C. Slonczewski, “Theory and Application of Exchange-Driven Switching”, IEEE, Apr. 2000, pp. CE-02.
J.C. Slonczewski, “Current-Driven Excitation of Magnetic Multilayers”, Journal of Magnetism and Magnetic Materials, 1996, pp. 1.1-1.7.
J.C. Slonczewski, “Conductance and Exchange Coupling of Two Ferromagnets Separated by a Tunneling Barrier”, The American Physical Society, vol. 39, No. 10, Apr. 1, 1999, pp. 6995-7002.
J.Z. Sun, “Current-Driven Magnetic Switching in Manganite Trilayer Junctions”, Journal of Magnetism and Magnetic Materials, No. 202, 1999, pp. 157-162.
N.C. Emley, et al.,Reduction of spin transfer by synthetic antiferromagnets, http://www.citebase.org/cgi-bin/fulltext?format=application/pdf&identifier=oal:arXiv.org:cond-mat/0401483, Jan. 2004.
L. Berger,Emission of spin waves by a magnetic multilayer traversed by a current, Physical Review B, vol. 54, No. 13, Oct. 1996, pp. 9353-9358.

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