Abstract: A spin orbit torque magnetoresistive random access memory (SOT MRAM) includes at least a spin current source alloy layer, a ferromagnetic free layer, and an insulation layer. The spin current source alloy layer is a nickel-tungsten alloy layer. The ferromagnetic free layer is located on the spin current source alloy layer. The insulation layer is located on the ferromagnetic free layer. Since the nickel-tungsten alloy layer has favorable perpendicular magnetic anisotropic and can maintain a high spin Hall angle, it is suitable as a spin current source for the SOT MRAM.

Abstract: An abrasive mesh for a powered grinding wheel is made by weaving plural twisted warp threads with plural single weft threads. The twisted warp threads construct an even machining surface for grinding the workpiece evenly, avoiding the occurrence of surface scratch. Since the twisted warp threads are connected to the single weft threads by weaving, the structure strength of the abrasive mesh is relatively high, thus extending its service life. Further, the abrasive mesh can be applied to grind the workpiece requiring high grinding fineness.

Abstract: An abrasive mesh for a powered grinding wheel is made by weaving plural twisted warp threads with plural single weft threads. The twisted warp threads construct an even machining surface for grinding the workpiece evenly, avoiding the occurrence of surface scratch. Since the twisted warp threads are connected to the single weft threads by weaving, the structure strength of the abrasive mesh is relatively high, thus extending its service life. Further, the abrasive mesh can be applied to grind the workpiece requiring high grinding fineness.