A novel double stator hybrid-excited Halbach permanent magnet flux-switching machine for EV/HEV traction applications.

This research paper introduces the Double Stator (DS) Hybrid Excitation (HE) Halbach Permanent Magnet (HPM) Flux Switching (FS) machine. The machine construction and its optimization specifically designed for electric vehicle (EV)/hybrid electric vehicle (HEV) traction applications are investigated. The optimization using a multi-objective Genetic Algorithm is conducted following a sensitivity analysis-based identification of key optimization parameters and constraints.

Micromagnetic Simulation of 1-FePt-Based Exchange-Coupled-Composite-Bit-Patterned Media with Microwave-Assisted Magnetic Recording at Ultrahigh Areal Density.

In this work, we propose exchange-coupled-composite-bit-patterned media (ECC-BPM) with microwave-assisted magnetic recording (MAMR) to improve the writability of the magnetic media at a 4 Tb/in recording density. The suitable values of the applied microwave field's frequency and the exchange coupling between magnetic dots, , of the proposed media were evaluated. It was found that the magnitude of the switching field, , of the bilayer ECC-BPM is significantly lower than that of a conventional BPM.

Free Layer Thickness Dependence of the Stability in Co(MnFe)Ge Heusler Based CPP-GMR Read Sensor for Areal Density of 1 Tb/in.

Current-perpendicular-to-the-plane giant magnetoresistance (CPP-GMR) read sensors based on Heusler alloys are promising candidates for ultrahigh areal densities of magnetic data storage technology. In particular, the thickness of reader structures is one of the key factors for the development of practical CPP-GMR sensors. In this research, we studied the dependence of the free layer thickness on the stability of the Co(MnFe)Ge Heusler-based CPP-GMR read head for an areal density of 1 Tb/in, aiming to determine the appropriate layer thickness.