“…Earlier works on GMI effect were on CoFeSiB amorphous wires. [1][2][3][4] Now it has been extended to Co-Fe-Si-B amorphous ribbons, [5][6][7] Fe-Zr-B, 8,9) Fe-Zr-B-Cu, 10,11) Fe-Zr-B-Cu-Al, 12) Fe-Nb-B, 13) Fe-Hf-B, 14) Fe-P-C-Mo-Cu-Si, 15) Fe-Cu-Nb-Si-B, [16][17][18] Fe-Cu-NbSi-B-Al 19) nanocrystalline ribbons, Ni-Fe-Mo permalloy wires/flakes, 20,21) pure Fe wires, 22,23) Ni-Fe/Cu/Ni-Fe, 24) Co-Si-B/(Cu,Ag)/Co-Si-B 25) sandwich films, Be-Cu/NiFe, 26) Ag/Ni-Fe, 27) Cu/Co-P 28) plated wires, manganites La-A-Mn-O (A ¼ Sr, Ba, Ca) 29,30) and Mn-Zn ferrites. 31) The GMI effect consisting a sensitive change of impedance under a dc magnetic field is of important applications in various magnetic sensors.…”