Active Magnetic Bearing (AMB) supports a rotor by magnetic attractive forces, without any mechanical contact. The paper presents a field-circuit model of an active magnetic bearing including its control loop. The basic parameters of the active magnetic system has been obtained from a FEM analysis of an magnetic bearing actuator. The position control system is based on operation of the local con...

We present TB2J, a Python package for the automatic computation of magnetic interactions, including exchange and Dzyaloshinskii–Moriya, between atoms crystals from results density functional calculations. The program is based on Green’s function method with local rigid spin rotation treated as perturbation. As input, uses output either Wannier90, which interfaced many theory packages, or codes ...

this study investigated the applicability of polyethylene glycol (peg-4000) coated fe3o4 magnetic nanoparticles for the selective removal of toxic pb (ii) ion from wastewater. the fe3o4 magnetic nanoparticles of 24 nm were synthesized using a coprecipitation method and characterized by scanning electron microscopy (sem), vibratingsample magnetometer (vsm), and x-ray diffraction (xrd). sem image...