Compositions – Magnetic – With wax – bitumen – resin – or gum
Reexamination Certificate
2003-02-06
2008-09-30
Koslow, C. Melissa (Department: 1793)
Compositions
Magnetic
With wax, bitumen, resin, or gum
C252S062550, C252S062520, C428S403000, C428S407000, C977S838000, C977S830000, C977S810000
Reexamination Certificate
active
07429339
ABSTRACT:
A magnetic nanoparticle (22), a magnetic nanomaterial (30), assembly (30), and a method for synthsising a magnetic nanoparticle, relating to thermodynamically stable and air stable ferromagnetic nanoparticles of adjustable aspect ratio made upon decomposition of organometallic precursors in solution in the presence of a reaction gas and a mixture of organic ligands. The magnetic nanomaterial comprises magnetic nanoparticles of homogeneous size, shape, and magnetic orientation that comprises a magnetic core (24, 34) ferromagnetic at room temperature and/or operating temperatures, and a non-magnetic matrix (26, 36) encapsulating the magnetic core. This magnetic nanomaterial could be used in high frequency integrated circuit applications, such as used in wireless portable electronic devices, to enchance magnetic field confinement and improve passive component performance at MHz and GHz frequency in a variety of passive and active devices, such as transformers, on-chip signal isolation, inductors, and the like.
REFERENCES:
patent: 5456986 (1995-10-01), Majetich et al.
patent: 1039488 (2000-09-01), None
patent: WO 98/22942 (1998-05-01), None
Shafi et a, “Surfactant-Assisted Self-Organization of Cobalt Nanoparticles in a Mganetic Fluid”, Advanced Materials, 10, No. 8, pp. 590-593, Feb. 6, 1998.
Turgut et al, “Magnetic properties and microstructural observations of oxide coated FeCo nanocrystals before and after compaction”, Jor. Appl. Phys., vol. 85, No. 8, pp. 4406-4408, Apr. 1999.
Sun et al, “Monodisperse FePt Nanoparticles and Ferromagentic FePt Nanaocrystal Superlatices”, Science, vol. 287, pp. 1989-1992, Mar. 17, 2000.
Giersig, “Multidimensional Nanostructures Based on Single Nanaosized Magnetic Clusters”, Proc. Int. Symp. on Cluster Assembled Mater., Sep. 2001.
Shafi et al., “Surfactant-Assisted Self-Organization of Cobalt Nanoparticles in a Magnetic Fluid,” Advanced Materials, vol. 10, No. 8, Jun. 2, 1998, pp. 590-593.
Sugawara et al., “Room-Temperature Dipole Ferromagnetism in Linear-Self-Assembling Mesoscopic Fe Particle Arrays,” The American Physical Society, vol. 56, No. 14, Part, Oct. 1, 1997, pp. R8499-R8502.
1/1—(C) INSPEC/IEE, XP-002205895, Sun et al., “Monodisperse FePt Nanoparticles and Ferromagnetic FePt Nanocrystal Superlattices,” Science, vol. 287, No. 5460, Mar. 17, 2000, 1 pg.
Turgut et al., “Magnetic Properties and Microstructural Observations of Oxide Coated FeCo Nanocrystals Before and After Compaction,” Journal of Applied Physics, vol. 85, No. 8, Apr. 15, 1999, pp. 4406-4408.
Li et al, “Synthesis and Characterization of Co Nanoparticles by Solventless Thermal Decomposition”, Solid State Phenomena, (2007), pp. 71, vol. 119, Trans Tech Publications, Switzerland.
Puntes et al, “Synthesis, self-assembly, and magnetic behavior of a two-dimensional superlattice of single-crystal E-Co nanoparticles”, Applied Physics Letters, Apr. 9, 2001, pp. 2187-2189, vol. 78, No. 15, American Institute of Physics.
Sun et al, “Single-Crystal Iron Nanowire Arrays”, Solid State Phenomena, Mar. 10, 2007, pp. 17, vols. 121-123, Trans Tech Publications, Switzerland.
Cordente et al, “Synthesis and Magnetic Properties of Nickel Nanorods”, Nano Letters, Jun. 28, 2001, pp. 565-568, vol. 1, No. 10, American Chemical Society.
Dumm et al, “Magnetism of ultrathin FeCo (001) films on GaAs (001)”, Journal of Applied Physics, May 1, 2000, pp. 5457-5459, vol. 87, No. 9, American Institute of Physics.
Gromov et al, “Electromagnetic analysis of layered magnetic/conductor structures”, Appl. Phys. 33, Jun. 9, 1999, PII: S0022-3727(00)05886-1, IOP Publishing LTD, United Kingdom.
Huijbregtse et al, “High-frequency permeability of soft-magnetic Fe-Hf-O films with high resistivity”, J. Appl. Phys., Feb. 1, 1998, pp. 1569-1574, vol. 83, No. 3, American Institute of Physics.
Kim et al, “Magnetic Properties of NiZnCu Ferrite Powders and Thin Films Prepared by a Sol-Gel Method”, IEEE Transactions on Magnetics, Jul. 2001, pp. 2362-2365, vol. 37, No. 4, IEEE.
Klemmer et al, “Ultrahigh frequency permeability of sputtered Fe-Co-B thin films”, Journal of Applied Physics, Jan. 15, 2000, pp. 830-833, vol. 87, No. 2, American Institute of Physics.
Mercier et al, “Magnetic resonance in spherical Co-Ni and Fe-Co-Ni particles”, Physical Review B, Jul. 1, 2000, pp. 532-544, vol. 62, No. 1, The American Physical Society.
Murray et al, “Synthesis and Characterization of Monodisperse Nanocrystals and Close-Packed Nanocrystal Assemblies”, Annu. Rev. Mater. Sci. 2000., 30:pp. 545-610, Annual Reviews.
Park et al, “Synthesis and Magnetic Studies of Uniform Iron Nanorods and Nanospheres”, J. Am. Chem. Soc. 2000, May 12, 2000, pp. 8581-8582, 122, American Chemical Society.
Puntes et al, “Colloidal Nanocrystal Shape and Size Control: The Case of Cobalt”, Science Reports, Mar. 16, 2001, pp. 2115-2117, vol. 291, www.sciencemag.org.
Sun et al, “Monodisperse FePt Nanoparticles and Ferromagnetic FePt Nanocrystal Superlattices”, Science Reports, Mar. 17, 2000, pp. 1989-1992, vol. 287, www.sciencemag.org.
Amiens Catherine
Casanove Marie-Jose
Chaudret Bruno
Dumestre Frederic
Fromen Marie Claire
Freescale Semiconductor Inc.
Koslow C. Melissa
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