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  • 1990-1994  (9)
  • 1975-1979  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Modulation-induced giant magnetoresistance in a spinodally decomposed Cu-Ni-Fe alloy : 38th Annual Conference on Magnetism and Magnetic Materials (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 6915-6917 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Giant magnetoresistance in a spinodally decomposed, bulk 60 Cu-20 Ni-20 Fe alloy is reported. An annealed, quenched, and heat-treated sample with a compositional modulation of (approximately-less-than)50 A(ring) size exhibits a ΔR/R value as high as 9% at 4.2 K. Optimization of the ferromagnetic phase particle geometry through a combination of spinodal decomposition and uniaxial deformation led to a locally multilayered, superlattice-like structure and a dramatic increase in room-temperature magnetoresistance from ∼0.6 to ∼5%. This improvement in magnetoresistance is accompanied by a decrease in coercivity from ∼620 Oe in the fully decomposed material to ∼45 Oe in the optimized structure. Interestingly, this structure no longer exhibits the commonly observed temperature-dependent behavior of ΔR/R increasing at low temperatures, but rather shows a decrease at 4.2 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.356779
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  • 2
    Electronic Resource
    Electronic Resource
    Giant magnetoresistance in spinodally decomposed Cu–Ni–Fe films : The 6th joint magnetism and magnetic materials (MMM)−intermag conferenc (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 6814-6816 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report the observation of the GMR effect in spinodally decomposed Cu–20Ni–20Fe thin films. A ΔR/R value as high as 6.5% was observed at room temperature. In contrast to the commonly observed temperature-dependent behavior of ΔR/R increasing at low temperature; thin film shows a decrease in ΔR/R at 4.2 K. The dependence of the GMR effect on various deposition parameters, such as substrate temperature has been studied. The observed giant magnetoresistance behavior in Cu–20Ni–20Fe films is most likely related to the field-induced decrease in electron scattering in a pseudosuperparamagnetic material, as well as the spin-dependent scattering at the two-phase interface and in the ferromagnetic phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.358138
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  • 3
    Electronic Resource
    Electronic Resource
    Enhanced giant magnetoresistance in Fe/Cr multilayer films by Cr alloying of the Fe layers (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 63 (1993), S. 1279-1281 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effect of the Cr alloying addition to the Fe layers in the Fe/Cr superlattice films [Fe(15 A(ring))/Cr(tA(ring))]30), (t=8–20) on the magnetoresistance behavior has been investigated. The alloyed superlattice films exhibited significantly improved giant magnetoresistance effect (ΔR/R∼12.2% at 4.2 K) as compared to the unalloyed Fe/Cr multilayer films (ΔR/R∼6.9%). Both films exhibit ΔR/R dependence on the thickness of the Cr layer with the maximum ΔR/R occurring at ∼10 A(ring) thickness. The M-H loops indicate that antiferromagnetic coupling exists in both films, which is believed to be responsible for the observed giant magnetoresistance. The improvement in ΔR/R in the Cr-alloyed superlattice films is attributed to the stronger spin-dependent scattering of conduction electrons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.109757
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  • 4
    Electronic Resource
    Electronic Resource
    Thermal conductivity in molten-metal-etched diamond films (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 63 (1993), S. 622-624 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Substantial thinning of chemical vapor deposited diamond films has been accomplished by a diffusional transfer of carbon atoms from diamond to molten rare-earth metals. Cerium and lanthanum are particularly useful because of their large liquid solubility of carbon. The perpendicular thermal conductivity of the processed diamond film (after removal of about 40 μm from the bottom surface) is remarkably improved from ∼14–15 to about 20–22 W/cm °C, a value approaching that of high-quality Type IIa single crystal diamond. The in-plane conductivity, on the other hand, is improved only slightly because of the anisotropic microstructure. The improvement in conductivity implies that few phonon scattering centers are introduced by the thinning process, for example, through grain boundary contamination by metal atoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.109969
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  • 5
    Electronic Resource
    Electronic Resource
    Creation of bulk, superlatticelike structure and giant magnetoresistance effect in a deformed Cu-Ni-Fe alloy (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 64 (1994), S. 1039-1041 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A spinodally decomposed Cu-20 Ni-20 Fe alloy containing ∼500 A(ring) size ferromagnetic particles was uniaxially deformed to create a locally multilayered, superlatticelike structure with alternating ferromagnetic and nonmagnetic layers. When the size scale of each layer was made to be small, ∼15 A(ring) thick, a dramatic improvement in room-temperature magnetoresistance ratio from ∼0.6 to ∼5% was obtained. An abnormal temperature dependence of magnetoresistance ratio, i.e., the room-temperature value being greater than that at 4.2 K, was found. The observed giant magnetoresistance behavior could be explained in terms of the field-induced decrease in electron scattering in a nearly superparamagnetic material although the spin-dependent scattering at the two-phase interface and in the ferromagnetic phase may also be a contributing factor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.110963
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Tactile shear sensing using anisotropically conductive polymer (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 62 (1993), S. 2440-2442 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A new technique for tactile shear sensing using a z-direction-only conductive polymer material is discussed. A thin layer of the material is in situ cured, in the presence of a z-direction magnetic field, on the surface of a circuit board containing a contact-pad array. A small metallic cursor embedded in an overlaid elastomeric skin slides over the z-direction conductive polymer upon shear motion, and its change in position is detected by the occurrence of simple circuit connections between neighboring contact pads. This shear sensor has the advantages of being compliant, transparent, able to accommodate pad height variations, and capable of high-resolution sensing. It may also serve as temperature and pressure sensor because of the characteristic and reversible variation of the z-direction electrical resistance in the conductive polymer upon changes in ambient temperature and contact pressure. The new sensor may be useful for potential applications such as touch-sensitive controllers for computer-related products and robotic skins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.109365
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Massive thinning of diamond films by a diffusion process (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 60 (1992), S. 1948-1950 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Substantial thinning or polishing of diamond films is a nontrivial problem because of the extraordinary hardness of diamond. In this letter, we report the observation of massive thinning of CVD diamond film (from ∼220 to ∼120 μm thickness) by simple diffusional transfer of carbon from diamond to iron foil at 900 °C. The thinning process also creates relatively smooth surfaces by eliminating much of the roughness from the top faceted surface of the film. A very sharp Raman peak at 1332 cm−1 indicates that the high quality of the diamond bonding is not compromised by the thinning heat treatment. This technique may be useful for conveniently removing the undesirable part of the diamond films, such as the rough growth facets or the fine-grained bottom layer with inferior thermal properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.107133
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Giant magnetoresistance in Fe0.95Cr0.05/Cr multilayer films : 38th Annual Conference on Magnetism and Magnetic Materials (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 7052-7054 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have studied the effect of Cr alloying addition to the Fe layers on the magnetoresistance behavior of the Fe/Cr superlattice films [Fe(15 A(ring))/Cr(8–20 A(ring))]30. The alloyed superlattice films Fe0.95Cr0.05/Cr exhibited significantly improved giant magnetoresistance effect (ΔR/R∼12.2% at 4.2 K), as compared to the unalloyed Fe/Cr multilayer films (ΔR/R∼6.9%). The M–H loops indicate that antiferromagnetic coupling exists in both films, which is believed to be responsible for the observed giant magnetoresistance. The improvement in ΔR/R in the Cr-alloyed superlattice films is attributed to the stronger spin-dependent scattering of conduction electrons caused by the introduction of Cr impurities in the ferromagnetic layers. The alloyed superlattice films also exhibit reduced coercivity and saturation magnetization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.356723
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    GERMINATED SEEDS FOR HUMAN CONSUMPTION (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 40 (1975), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1975.tb01075.x
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  • 10
    Electronic Resource
    Electronic Resource
    SPROUTING OF SEEDS AND NUTRIENT COMPOSITION OF SEEDS AND SPROUTS (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 40 (1975), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1975.tb12526.x
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