The magnetic properties of nanostructured NiMn alloys and its comparison to the bulk are carried out in this work. The squareness (Mr/Ms ~ 0) and coercivity (Hc~ 0.7 Oe) values in bulk nickel are shifted to 0.064 and 70 Oe, respectively in thin films and 0.89 and 485 Oe in nanowires. These altered magnetic properties of thin films and nanowires are mainly due to the nanoscale effect. The Ni and Mn contents of the samples were adjusted by varying the ratio of Ni and Mn ion concentrations in the electrolyte. In thin films the highest values for coercivity (Hc~ 94 Oe) and squareness (Mr/Ms ~ 0.16) were obtained using 25/75 Ni:Mn concentrations and in nanowires the highest values for coercivity (Hc~ 485 Oe) and squareness (Mr/Ms ~ 0.89) were obtained using 100/0 Ni:Mn.
