Conferences related to Cobalt alloys

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2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)

Technical presentations will range from the fundamental physics of electron emission and modulated electron beams to the design and operation of devices at UHF to THz frequencies, theory and computational tool development, active and passive components, systems, and supporting technologies.System developers will find that IVEC provides a unique snapshot of the current state-of-the-art in vacuum electron devices. These devices continue to provide unmatched power and performance for advanced electromagnetic systems, particularly in the challenging frequency regimes of millimeter-wave and THz electronics.Plenary talks will provide insights into the history, the broad spectrum of fundamental physics, the scientific issues, and the technological applications driving the current directions in vacuum electronics research.


2020 IEEE 70th Electronic Components and Technology Conference (ECTC)

ECTC is the premier international conference sponsored by the IEEE Components, Packaging and Manufacturing Society. ECTC paper comprise a wide spectrum of topics, including 3D packaging, electronic components, materials, assembly, interconnections, device and system packaging, optoelectronics, reliability, and simulation.


2020 IEEE International Conference on Plasma Science (ICOPS)

IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.


2020 IEEE International Magnetic Conference (INTERMAG)

INTERMAG is the premier conference on all aspects of applied magnetism and provides a range of oral and poster presentations, invited talks and symposia, a tutorial session, and exhibits reviewing the latest developments in magnetism.


2019 IEEE 28th Symposium on Fusion Engineering (SOFE)

fusion engineering, physics and materials, plasma heating, vacuum technology, tritium processing, fueling, first walls, blankets and divertors


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Periodicals related to Cobalt alloys

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Aerospace and Electronic Systems Magazine, IEEE

The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.


Applied Superconductivity, IEEE Transactions on

Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission


Dielectrics and Electrical Insulation, IEEE Transactions on

Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.


Electron Devices, IEEE Transactions on

Publishes original and significant contributions relating to the theory, design, performance and reliability of electron devices, including optoelectronics devices, nanoscale devices, solid-state devices, integrated electronic devices, energy sources, power devices, displays, sensors, electro-mechanical devices, quantum devices and electron tubes.


Energy Conversion, IEEE Transaction on

Research, development, design, application, construction, installation, and operation of electric power generating facilities (along with their conventional, nuclear, or renewable sources) for the safe, reliable, and economic generation of electrical energy for general industrial, commercial, public, and domestic consumption, and electromechanical energy conversion for the use of electrical energy


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Most published Xplore authors for Cobalt alloys

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Xplore Articles related to Cobalt alloys

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Effects of Co substitution on the magnetic and microstructural properties of melt-spun Pr/sub 7/Tb/sub 1/Fe/sub 87-x/Co/sub x/Nb/sub 0.5/Zr/sub 0.5/B/sub 4/ nanocomposites

2003 IEEE International Magnetics Conference (INTERMAG), 2003

In this paper, we have investigated the magnetic and microstructural properties of melt-spun Pr/sub 7/Tb/sub 1/Fe/sub 87-x/Co/sub x/Nb/sub 0.5/Zr/sub 0.5/B/sub 4/ (x=0, 10, 20, 30) nanocomposites with the aim to perform magnetic annealing experiments in fully amorphous samples.


Analysis of the activation energy spectra of the induced anisotropy in amorphous Co58Ni10Fe5Si11B16

IEEE Transactions on Magnetics, 1984

Magnetic annealing kinetics for the induced anisotropy and the coercive field in amorphous alloys Co58Ni10Fe5Si11B16were studied. Spectra of activation energies for "reversible" and "irreversible" annealing processes are determined and discussed in the light of a micromagnetic theory of the induced anisotropy recently proposed [1] on the basis of the thermodynamics of two- level systems [2] : 1. The formation of ...


Magnetism of Nd2Fe12-xMnxCo2B alloys

IEEE Transactions on Magnetics, 1986

Magnetic properties (saturation magnetizations, anisotropy fields and Curie temperatures) of alloys of the composition Nd2Fe12-xMnxCo2B with0 \leq × \leq 1.0are presented. All of the alloys studied crystallize in the tetragonal Nd2Fe14B structure. With substitution of Fe by Mn, the Curie temperatures and saturation moments decrease. The anisotropy field, HA, is found to increase. Theoretical energy products are reduced from 65 ...


High coercivity Zr and Co substituted (Nd-Pr)-Fe-B nanophase hard magnetic alloys

IEEE Transactions on Magnetics, 2001

The effects of Zr and Co substitutions for Fe on the magnetic properties of nanocrystalline near-stoichiometric (Nd/sub 0.75/Pr/sub 0.25/)/sub 12/(Fe/sub 1-x/Co/sub x/)/sub 82-z/Zr/sub z/B/sub 6/ (x=0,0.1,0.2 and z=0-4) alloy ribbons are reported. The nanoscale structures were derived by devitrification annealing of amorphous as-cast ribbon. Very good combinations of energy product, (BH)/sub max/ (/spl sim/160 kJ/m/sup 3/) and intrinsic coercivities, /sub ...


Effects of interface oxidization in ferromagnetic tunnel junctions

1999 IEEE International Magnetics Conference (INTERMAG), 1999

None


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Educational Resources on Cobalt alloys

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IEEE-USA E-Books

  • Effects of Co substitution on the magnetic and microstructural properties of melt-spun Pr/sub 7/Tb/sub 1/Fe/sub 87-x/Co/sub x/Nb/sub 0.5/Zr/sub 0.5/B/sub 4/ nanocomposites

    In this paper, we have investigated the magnetic and microstructural properties of melt-spun Pr/sub 7/Tb/sub 1/Fe/sub 87-x/Co/sub x/Nb/sub 0.5/Zr/sub 0.5/B/sub 4/ (x=0, 10, 20, 30) nanocomposites with the aim to perform magnetic annealing experiments in fully amorphous samples.

  • Analysis of the activation energy spectra of the induced anisotropy in amorphous Co58Ni10Fe5Si11B16

    Magnetic annealing kinetics for the induced anisotropy and the coercive field in amorphous alloys Co58Ni10Fe5Si11B16were studied. Spectra of activation energies for "reversible" and "irreversible" annealing processes are determined and discussed in the light of a micromagnetic theory of the induced anisotropy recently proposed [1] on the basis of the thermodynamics of two- level systems [2] : 1. The formation of induced anisotropies in Co58- Ni10Fe5Si11B16is attributed to an atom pair ordering process around free volumes. 2. "Reversible" annealing processes are characterized by a spectrum of activation energies ranging from 1.8 eV to 2.3 eV. The small pre- exponential factor of τo,R = 6.10-16s points to a localized atomic, thermally activated process. 3. "Irreversible" annealing processes are characterized by small activation energies ranging from 0.5 eV to 1.0 eV. The large pre- exponential factor τo, A = 3-10-4s points to a long-range migration of free volumes leading to an immobilization of atom pairs.

  • Magnetism of Nd2Fe12-xMnxCo2B alloys

    Magnetic properties (saturation magnetizations, anisotropy fields and Curie temperatures) of alloys of the composition Nd2Fe12-xMnxCo2B with0 \leq × \leq 1.0are presented. All of the alloys studied crystallize in the tetragonal Nd2Fe14B structure. With substitution of Fe by Mn, the Curie temperatures and saturation moments decrease. The anisotropy field, HA, is found to increase. Theoretical energy products are reduced from 65 to 58 MGOe when Fe is replaced by Mn to the extent of x =1.

  • High coercivity Zr and Co substituted (Nd-Pr)-Fe-B nanophase hard magnetic alloys

    The effects of Zr and Co substitutions for Fe on the magnetic properties of nanocrystalline near-stoichiometric (Nd/sub 0.75/Pr/sub 0.25/)/sub 12/(Fe/sub 1-x/Co/sub x/)/sub 82-z/Zr/sub z/B/sub 6/ (x=0,0.1,0.2 and z=0-4) alloy ribbons are reported. The nanoscale structures were derived by devitrification annealing of amorphous as-cast ribbon. Very good combinations of energy product, (BH)/sub max/ (/spl sim/160 kJ/m/sup 3/) and intrinsic coercivities, /sub i/H/sub c/ (within the range 800-1400 kA/m for various Zr concentrations) were achieved for the Co-free alloys although the Zr addition resulted in some reduction in T/sub c/. For alloys in which, also, 10 and 20% of the Fe was substituted by Co, excellent remanence enhancement, J/sub r/ (to >1 T) were achieved with 1 at% Zr addition. Combined with excellent squareness of the J-H second quadrant, this gave (BH)/sub max/ up to 175 kJ/m/sup 3/, together with Curie temperatures, T/sub c/ of >375/spl deg/C and >460/spl deg/C for 10 and 20% Co, respectively, and with only minor reductions in /sub i/H/sub c/. The role of Zr in promoting uniform and refined grain structures and enhancing the magnetic properties will be discussed.

  • Effects of interface oxidization in ferromagnetic tunnel junctions

    None

  • Influence of hydrogen on magnetic properties of soft magnetic amorphous alloys

    The influence of electrolytic hydrogenation on the magnetic properties of three different kinds of amorphous alloys has been investigated. The alloys studied were Fe/sub 83.3/Si/sub 3.5/B/sub 11.2/C/sub 2/, Fe/sub 38/Ni/sub 38/Mo/sub 2/Si/sub 8/B/sub 14/, and (Co/sub 86/Fe/sub 5/Cr/sub 9/)/sub 75/Si/sub 10/B/sub 15/. The experimental results showed that after hydrogenation the samples became very brittle and the soft magnetic properties degraded dramatically, but saturation magnetization sigma /sub s/ and average hyperfine field increased markedly. As hydrogen evolved from the charged samples which were placed in air at room temperature, the magnetic properties, toughness, and average hyperfine field were gradually recovered.<<ETX>>

  • Effects Of Underlayer Microstructure On Disk Media

    None

  • Femtosecond dynamics of the spin population in metallic ferromagnets

    Summary form only given. Recent experiments have revealed an ultrafast optically-induced dynamics in the time-resolved linear magneto-optical (MO) signals obtained in metallic ferromagnetic samples. An important question raised by these experiments is to know how much of the observed dynamics is due to the excited electronic populations or to their spins. In this paper we report on the study of a thin film of CoPt/sub 3/ alloy with a temporal resolution that allowed us to clearly resolve for the first time the ultrafast characteristic time of the MO signal. Moreover, by carefully separating the time evolution of the diagonal and nondiagonal elements of the dielectric tensor, we show that during the thermalization process of the electronic population, the spin population is modified. This allows us to clarify the respective role of charges and spins on the femtosecond time scale.

  • Engineering the microstructure of thin films for perpendicular recording

    In this paper we discuss various microstructural features that control the recording properties of thin films used in perpendicular recording. These microstructure features include crystallographic texture, grain size, grain size distribution, grain to grain magnetic isolation, grain to grain composition variation and in the case of L1/sub 0/ materials the grain to grain variation in the degree of atomic order. We discuss recording media comprised of continuous thin films as well as granular thin films. We discuss media composed of either hcp Co alloys or FePt L1/sub 0/ alloys. Methods of controlling the microstructural parameters are discussed as is their effects on recording properties. Examples from our recent research will be used to illustrate these microstructural aspects of perpendicular recording media.

  • X-ray reflectivity determination of interface roughness and correlated with magnetic coercivity of Co/sub 82/Cr/sub 12/Pt/sub 4/Ta/sub 4/ thin film

    None



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