We report analysis and measurements of the torque and flow of a ferrofluid in a cylindrical annulus subjected to a rotating magnetic field perpendicular to the cylinder axis. The presence of the inner cylinder results in a nonuniform magnetic field in the annulus. An asymptotic analysis of the ...
1B)23, which enables us to control the field strength24, and hence the magnetic torque, by changing the distance of the magnets from the sample. If the magnetic torque is larger than the motor torque, we can also control the orientation of the bead and, indirectly, the orientation of ...
We used this field solution to calculate both cogging torque and electromagnetic torque by integrating the Maxwell stress tensor inside the air gap. The case without inter-polar piece, which is equivalent to a surface-mounted permanent-magnet motor, is also treated. The accuracy of the developed ...
Here we report the first experimental deomstration of out-of-plane MSHE and the associated giant field-like torque. Namely, its sign can be controlled by the direction of the staggered moments of the antiferromagnetic Weyl semimetal Mn3Sn. Conceptually, SOTs at the interface between two magneti...
Torquedependson themagneticfieldstrengthandrotationdifference. 转矩大小取决于磁场强度和转速差。 xylhq.cn 6. Resultsindicate,withtheincreaseofthemagneticfieldstrength,thewearmasslossof thesampledecreasesfirstandthenincreases. 结果表明:随外磁场强度的增加,试样销的磨损质量损失先降低后增加; ...
Domain wall displacement at low velocity was achieved by current pulses of 2.5 1011 A m2 at zero applied magnetic field, comparable to the zero-field threshold current density of Permalloy. A field-assisted spin transfer torque drove the domain wall 1.8m to the end of the arc. 展开 ...
Spin transfer torque in a graphene lateral spin valve assisted by an external magnetic field. Spin-based devices are widely discussed for post-complementary metal-oxide-semiconductor (CMOS) applications. A number of spin device ideas propose using s... CC Lin,AV Penumatcha,Y Gao,... - 《Nano...
The coil (LD) is energised by a current (I) to induce a magnetic field in region (20) and one or more sensors (23) is position adjacent the region and the coil to detect a torque-dependent tangential (circumferential) field component external to the region (20). The current (I) may...
Accordingly, the voltage control of magnetic anisotropy can be used to realize physical reservoir computing by spintronics devices without driving current or magnetic field. Here, we perform numerical simulation of the Landau-Lifshitz-Gilbert (LLG) equation and find that the computational capabilities of...
Weyl fermions were originally proposed as massless Dirac fermions in relativistic quantum field theory. In solids, Weyl fermions often appear when either time-reversal symmetry or spatial-inversion symmetry is broken, which lifts the Kramer’s degeneracy of Bloch states at each crystal momentumk. Weyl...