Encapsulated nanometer magnetic particles

Details Encapsulated nanometer magnetic particles Encapsulated nanometer magnetic particles

1997-08-05

2000-04-04

Le, Hoa T.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

427216, 427217, 4272552, 4273761, 4273768, 4273837, 428328, 428330, 428332, 428403, 428558, 428570, 428611, 428615, 428640, 428650, 428655, 428666, 428668, 428672, 428673, 428674, 428680, 428681, 428686, B32B 516, B32B 1520, B22F 704, B05D 302

Patent

active

060459255

ABSTRACT:
Composite nanoparticles comprising an elemental metal core surrounded by a metal-containing shell material are described wherein the particles have an average diameter of from about 5-500 nm; the core metal is preferably selected from the group consisting of the transition metals and especially Fe, Co and Ni, whereas the shell material is advantageously a metal such as an alkaline earth metal, or a metal salt such as a metal oxide or metal halide. The shell material is preferably more oxophilic than the elemental core material, enabling the core metal to remain purely metallic. These core/shell composite particles can be used to fabricate magnetizable recording media such as tapes and disks.

REFERENCES:
patent: 4578115 (1986-03-01), Harrington et al.
patent: 4588708 (1986-05-01), Klabunde
patent: 4877647 (1989-10-01), Klabunde
patent: 5348800 (1994-09-01), Moro et al.
patent: 5525377 (1996-06-01), Gallagher et al.
patent: 5633092 (1997-05-01), Gibbs
Klabunde et al.; Encapsulated Nanoparticles of Iron Metal; Chem. Mater., vol. 6,No. 6, 784-787 (1994).
Zhang et al.; Synthesis and Characterization of Encapsulated Nanoscale Magnetic Metal Particles; Cryosynthesis, Second Internat'l Conference on Low Temperature Chemistry (1996).
Zhang et al.; Synthesis of Nanoscale Magnetic Metal Particles Encapsulated in Magnesium Fluoride and the Properties of These Materials; High Temperature and Materials Science, vol. 36, 135-153 (1996).
Zhang et al.; Nanoscale Iron Crystallites Encapsulated in Nonmagnetic Metal Shells; High Temperature and Materials Science, vol. 36, 93-115 (1996).
Easom et al.; Nanoscale Magnetic Particles. New Methods to Surface Protected Metallic and Immiscible Bimetallic Clusters/Particles; Polyhedron, vol. 13, No. 8, pp. 1197-1223 (1994).

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