Materials and Nanoscience, Nebraska Center for (NCMN)


Date of this Version



Published in JOURNAL OF APPLIED PHYSICS VOLUME 91, NUMBER 10. © 2002 American Institute of Physics. Used by permission.


Low temperature magnetization reversal measurements were performed on individual permalloy nanowires of diameters between 30 and 60 nm. During the electrochemical growth of the wire, a defect was induced by a short pulse in the deposition potential modifying locally the microstructure and composition. Magnetic measurements performed with micro-superconducting quantum interference devices were performed. The angular dependence of switching field revealed significant deviations from classical predictions. For specific angles, magnetization curves indicate a reversal occurring in two steps.