Magnetic configuration

Fig. 22. Superconducting magnet configurations for MHD generators where the arrows represent the magnetic lines of force, (a) Solenoid (b) racetrack ...

Fig. 14 TMR vs applied magnetic field for an 8 nm Co/0.5 nm AI2O3/4.6 nm mbrene/10 nm Fe/ 1.5 nm Co junction. The arrows indicate the magnetic configuration of the Co and Fe electrodes at various applied fields. The inset shows the bias dependence of the TMR. Taken from [57] with permission...

MSE Magnet Configurations and Discussion 3.1. Layout of compact symmetric superconducting 174... 

For magnet configurations in which coils are coaxial and symmetric about the illustrated xy-plane, such as the magnet configurations in Figure 2A and C, the spherical harmonic expansion results in the elimination of all even order terms within the expansion. To further reduce computational complexity, the strategy employed here considers only one quarter of the magnet domain, and thus, the constraints in Equation (5) simplify to ... 

The quantity in the right-hand side of (21) is called the helicity of the vector b and is used in several contexts, mainly in fluid and in plasma physics. The term was coined by Moffatt in 1969 in a paper on tangled vorticity lines [44] with the velocity of a fluid v and its vorticity oa= V x v as the vectors a and b. The magnetic helicity h [ A BrfV is useful to study the magnetic configurations in astrophysical plasmas and in tokamaks. 

Following the same route for an F/S/F structure, we solve equations analytically in the F layers and for fs in the S layer. The important step is the realization that, if the F12 layers and two F/S boundaries are identical, fs (r, ujn) is symmetric in space with respect to the center of the S layer in both collinear magnetic configurations. This result is trivial in the P configuration, but is somewhat unexpected in the AP one. In contrast, the triplet component fs(r,Lon) is symmetric in the P and anti-symmetric in the AP configuration. 

Figure 6. Polarized neutron reflectivities of fN 0 = 5 nm, 20 nm and 60 nm samples during the reversal process. The spin flip (R+, R +) and non spin flip (if4-1", R") reflectivities are simultaneously modeled to obtain the magnetization configuration as shown in the inset. The lines are the computed reflectivities for different scattering cross-sections based on this model.

Figure 11. Pinning and nucleation. Pinning means that coercivity is created by trapping the domain wall at pronounced inhomogenities (pinning centers). In the absence of pinning centers, the coercivity is determined by the reversal field at which the original magnetization configuration becomes unstable (nucleation).

Figure 9. Left Starting from the S-sate the C-state is reached after 4 ns at 7 = 350 K. Right Magnetization configurations and energy along the minimum energy path.

Garton, W.R.S. and Tomkins, F.S. (1969). Diamagnetic Zeeman effect and magnetic configuration mixing in long spectral series of Ba I, Astrophys. J. 158,839-845. 

Suspended Magnet. In this case, the magnet assembly includes a permanent magnetic core surrounded by a belt conveyor, lire suspended magnet configuration is either cross-belt or in-line, with respect to the waste material flow (Figure 19). 

Figure 19 Suspended permanent magnet configurations (a) cross-belt and (b) in-line configuration. (With permission from Ref. 15.)...

Figure 20 Typical magnets configuration with alternating polarity. (Reproduced with permission from Ref. 1.)...

Under these conditions, the Coulomb interaction between the electrons involved in the collective wave function is introduced by the bias of the Hartree-Fock mean-field approximation. As previously seen in the introduction, an assumption concerning the starting magnetic configuration is required Anderson chose a ferromagnetic configuration. This aspect could have been questionable but Kondo showed that there is no pernicious effect [64]. Then the secular problem may be solved self-consistently. The Hg-and field wave function cpi r) is assumed to be a solution of the Hartree-Fock equations ... 

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