We fabricated the electroplated 20 ㎛-thick CoP on 150 ㎛-diameter copper wires by varying the concentration of H3PO3 by 0~50 g/l for the application of giant magneto-impedance (GMI) sensors of the micro-devices. We investigated the M-H loops and im...
We fabricated the electroplated 20 ㎛-thick CoP on 150 ㎛-diameter copper wires by varying the concentration of H3PO3 by 0~50 g/l for the application of giant magneto-impedance (GMI) sensors of the micro-devices. We investigated the M-H loops and impedance at 250 Oe with 4.5 and 10.7 MHz of the CoP/Cu wires. We reveal that a maximum GMI ratio larger than 200% is achieved by the electroplating condition with H3PO3 30 g/l. Our result implies that our proposed electroplated CoP/Cu may show a superior GMI ratio over the conventional rapidly solidified ribbons and films.