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MTJ current sensors have broad prospects in the large scale distributed monitoring of the smart grid. In this paper, we researched the design and optimization of magnetic ring for MTJ current sensors to suppress the susceptibility of the spatial position. The specific improvement and parameters of magnetic ring were also researched.
The use of ferrite rings to suppress the Very Fast Transients (VFT) in Gas Insulated Switchgears (GIS) has presented a special application of magnetics where core losses play a positive role [1]. As far as eddy loss is concerned, the simulation work of this application is concerned with the transverse electric (TE) eddy current problem shown in Fig. 1: a magnetic ring with a uniform cross-section...
Recently, due to the short supply of rare earth element, there is a great demand in developing the rare-earth-free permanent magnets with giant magnetic anisotropy. Among the rare-earth-free permanent magnetic materials of current interest, MnxGa alloys are potential candidates as permanent magnets [1]. In the MnxGa alloys, the ferromagnetic L10-MnGa phase and ferrimagnetic D022-Mn-3Ga phase are theoretically...
A hysteresisgraph has been set up to investigate the sweep rate dependence of coercivity on NdFeB magnets in closed magnetic circuit. The linear relationship between coercivity and logarithmic sweep rate has been found and the maximum difference of HC in the sweep rate is 1.1%. The fluctuation field and activation volume have been deduced, which is in agreement with results in open magnetic circuit...
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