keywords 2-DIMENSIONAL PLANAR MODEL AMORPHOUS FE-MN JOSEPHSON-JUNCTION ARRAYS LOWER CRITICAL DIMENSION MONTE-CARLO SIMULATIONS Materials Science Materials Science, Multidisciplinary NEUTRON DEPOLARIZATION PHASE-TRANSITION POSITIONAL DISORDER Physical Sciences Physics Physics, Applied Physics, Condensed Matter SPIN-GLASS BEHAVIOR Science & Technology TRANSVERSE MAGNETIC-FIELD Technology