Current perpendicular to plane giant magnetoresistance of multilayered nanowires electrodeposited in anodic aluminum oxide membranes

Co-Ni-Cu/Cu multilayered nanowires were prepared by electrodeposition using nanoporous aluminum oxide membranes rather than the more usual track-etche d polycarbonate membranes as templates. Very large values of the current pe rpendicular to plane giant magnetoresistance (CPP-GMR) were recorded: 55% a t room temperature and 115% at 77 K. The use of aluminum oxide membranes al so made possible a study of the effects of annealing on the CPP-GMR. (C) 20 00 American Institute of Physics. [S0003-6951(00)00504-0].