Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2004-11-28
Physical Review Letters 90, 175502 (2003)
Physics
Condensed Matter
Other Condensed Matter
5 pages, 4 figures
Scientific paper
10.1103/PhysRevLett.90.175502
We have used coherent, resonant, x-ray magnetic speckle patterns to measure the statistical evolution of the microscopic magnetic domains in perpendicular magnetic films as a function of the applied magnetic field. Our work constitutes the first direct, ensemble-averaged study of microscopic magnetic return point memory, and demonstrates the profound impact of interfacial roughness on this phenomenon. At low fields, the microscopic magnetic domains forget their past history with an exponential field dependence.
Fullerton Eric E.
Hellwig Olav
Kevan Stephen D.
Kortright Jeffrey B.
Moore Rob G.
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