Self-assembled giant magnetoresistance lateral multilayer for a

Details Self-assembled giant magnetoresistance lateral multilayer for a Self-assembled giant magnetoresistance lateral multilayer for a

1997-10-09

2000-01-18

Zimmerman, John J.

Stock material or miscellaneous articles

Composite

Of inorganic material

428679, 428687, 428693, 428337, 360113, 365158, B32B 1501, B32B 1504, B32B 1518, G11B 539

Patent

active

060156325

ABSTRACT:
A magnetoresistive sensor based on a giant magnetoresistance multilayer uses a multilayer structure formed of alternating layers or stripes of ferromagnetic and nonferromagnetic metal that are spontaneously formed or "self-assembled" laterally on a special template layer. The template layer is a crystalline structure that has a two-fold uniaxial surface, i.e., one that is structurally invariant for a rotation by 180 degrees (and only 180 degrees) about an axis (the symmetry axis) perpendicular to the surface plane. Such a template layer is the (110) surface plane of body-centered-cubic Mo. The alternating stripes of ferromagnetic metal (such as Co or Fe) and nonferromagnetic metal (such as Ag) become spontaneously arranged laterally on the template layer during co-deposition, such as during ultrahigh vaccum evaporation, and are aligned so that the direction of composition modulation, i.e., the direction perpendicular to the alternating stripes is along one of the unique axes of the template layer and in a plane parallel to the template layer. A crystalline base layer may be used beneath the template layer to enhance the growth of the template layer. If the template layer is (110) Mo, then the base layer may be sapphire having its (1 1 2bar 0) plane parallel to the (110) Mo plane.

REFERENCES:
patent: 5589278 (1996-12-01), Kamijo
patent: 5648885 (1997-07-01), Nishioka et al.
patent: 5764445 (1998-06-01), Torng et al.
patent: 5780176 (1998-07-01), Iwasaki et al.
patent: 5818323 (1998-10-01), Maeda et al.
patent: 5858455 (1999-01-01), Chambliss et al.
patent: 5867025 (1999-02-01), Allenspach et al.
S. Araki, "Magnetism and Transport Properties of Evaporated Co/Ag Multilayers", Journal of Applied Physics, vol. 73, No. 8, Apr. 15, 1993, pp. 3910-3916.
R. Q. Hwang, "Chemically Induced Step Edge Diffusion Barriers: Dendritic Growth in 2D Alloys", Physical Review Letters, vol. 76, No. 25, Jun. 17, 1996, pp. 4757-4760.
J. M. Millunchick et al., "Spontaneous Lateral Composition Modulation in III-V Semiconductor Alloys", MRS Bulletin, Jul. 1997, pp. 38-42.
S.S.P. Parkin et al., "Oscillations of Interlayer Exchange Coupling and Giant Magnetoresistance in (111) Oriented Permalloy/Au Multilayers", Physical Review Letters, vol. 72, No. 23, Jun. 6, 1994, pp. 1162-1164.
S.S.P. Parkin et al., "Low Field Giant Magnetoresistance in Sputtered Permalloy/Au Multilayers", Applied Physics Letters, vol. 68, No. 8, Feb. 19, 1996, pp. 1162-1164.
P.A. Schroeder et al., "Perpendicular Magnetoresistance in Ag/Co and Cu/Co Multilayers", Magnetism and Structure in Systems of Reduced Dimension, Plenum Press, 1993, pp. 129-142. (no month).
X.Z. Wang et al., "Magnetostatic Modes of Lateral-magnetic-superlattice Films in a Transverse Field", Journal of Physics: Condensed Matter, vol. 9, 1997, pp. 5777-5786. (no month).
C.T. Yu et al., "Giant Magnetoresistance in Fe/Ag Multilayer", Chinese Science Bulletin, vol. 39, No. 20, Oct. 1994, pp. 1680-1683.

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