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- Bcc grain size (1)
- Exchange coupled films (1)
- High Tc (1)
- Lagrangian (1)
- Nanocrystalline films (1)
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- Ni₁₁Co₁₁Fe₆₇₋ₓZr₇B₄Cux (1)
- Nonlinear resistance scales (1)
- Nucleation (1)
- Planar inductor applications (1)
- Quantum circuit theory (1)
- Quantum tunneling processes (1)
- Quartz substrates (1)
- Resistor shunted weak link junction circuit (1)
- Thermal activation (1)
- Vortex rings (1)
- Weak link bridges (1)
- YBaCuO (1)
Articles 1 - 3 of 3
Full-Text Articles in Electrical and Computer Engineering
Pulsed Laser Ablation Deposition Of Nanocrystalline Exchange-Coupled Ni₁₁Co₁₁Fe₆₇₋ₓzr₇B₄Cux (X=0,1) Films For Planar Inductor Applications, Ashish K. Baraskar, Soack Dae Yoon, Anton Geiler, Aria Yang, C. N. Chinnasamy, Yajie Chen, Nian Sun, Carmine Vittoria, Ramasis Goswami, Matthew Willard, Vincent G. Harris
Pulsed Laser Ablation Deposition Of Nanocrystalline Exchange-Coupled Ni₁₁Co₁₁Fe₆₇₋ₓzr₇B₄Cux (X=0,1) Films For Planar Inductor Applications, Ashish K. Baraskar, Soack Dae Yoon, Anton Geiler, Aria Yang, C. N. Chinnasamy, Yajie Chen, Nian Sun, Carmine Vittoria, Ramasis Goswami, Matthew Willard, Vincent G. Harris
Carmine Vittoria
Nanocrystalline films of the Ni₁₁Co₁₁Fe₆₇₋ₓZr₇B₄Cux (x=0,1) composition were deposited on fused quartz substrates by pulsed laser deposition. For the films ofNi₁₁Co₁₁Fe₆₆Zr₇B₄Cu, the bcc grain size ranged from 5 to 8 nm in the films deposited at substrate temperatures from ambient to 300°C. Films grown at a substrate temperature of 300°C were found to have optimal magnetic properties including minima in the coercivity and ferromagnetic resonance (FMR) linewidth. The magnetic characterization studies showed coercivity Hc < 5 Oe, 4πMs ∽16 kG, and in-plane uniaxial anisotropy field (HA)∽25-30 Oe. The ferromagnetic resonance linewidth was measured to be 34 Oe and zero magnetic field …
Quantum Circuit-Theory And Measurements On Ybacuo Grain-Boundary Weak-Link Bridges, H. How, H. Jiang, A. Widom, C. Vittoria
Quantum Circuit-Theory And Measurements On Ybacuo Grain-Boundary Weak-Link Bridges, H. How, H. Jiang, A. Widom, C. Vittoria
Carmine Vittoria
The quantum system associated with a resistor-shunted weak-link junction circuit may be described in terms of a single Lagrangian. In this representation the degrees of freedom internal to the dissipative energy of the resistor can be systematically separated from the Hamiltonian formulation of the circuit. This allows us to solve the quantum states of the junction while the effects of the resistor on the circuit are included as a Lagrangian multiplier. In this manner the effects of the measuring apparatus or resistor on the quantum state of the junction may be calculable. The calculations are in very good agreement with …
Quantum Nucleation And Thermal-Activation Of Vortex Rings In High-Tc Superconductors, H. Jiang, A. Widom, Y. Huang, T. Yuan, C. Vittoria, D. B. Chrisey, J. S. Horwitz
Quantum Nucleation And Thermal-Activation Of Vortex Rings In High-Tc Superconductors, H. Jiang, A. Widom, Y. Huang, T. Yuan, C. Vittoria, D. B. Chrisey, J. S. Horwitz
Carmine Vittoria
Vortex-ring nucleation by thermal activation and quantum-tunneling processes in high-Tc superconductors is discussed. The nonlinear resistance scales as eν-(J/J)ν. Thermal activation yields a critical index of v = 1, while quantum tunneling (without normal current dissipation) yields a critical index of v = 2. Current-voltage characteristics were measured on both disordered (low-Jc), ordered (c axis normal to the film plane, high-Jc) Y-Ba-Cu-O films, and microbridges below Tc. The data were examined in terms of both thermal-activation and quantum-nucleation models. For the disordered films, the v = 1 scaling law is in reasonable agreement with data, while v = 2 scaling …