Fabrication and temperature-dependent magnetic properties of one-dimensional embedded nickel segment in gold nanowires

► Au-Ni-Au nanowires were electrochemically fabricated in alumina templates. ► SEM and TEM analyses confirm bead-like structure of Ni segment in the wires. ► Coercivity as a function of T follows Kneller's law for ferromagnetic materials. ► While MS versus temperature follows the modified Bloch's law for the nanowires.