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Table 1 Coercivity (H c) and remanence ratio (M r/M s) measured at 5 K for the pristine and irradiated Ni-SiO2 nanogranular film with magnetic field parallel and perpendicular to the 120 MeV Au+ 9 ion beam direction.

From: Ion beam-induced shaping of Ni nanoparticles embedded in a silica matrix: from spherical to prolate shape

Sample Parallel Perpendicular
  H c (Oe) M r / M s H c (Oe) M r / M s
Pristine 168 0.19 208 0.56
Irradiated 457 0. 45 388 0.54