Relaxation of the field cooled magnetisation in 2D Cu(Mn) films

摘要: Abstract The relaxation of the field cooled magnetisation a multilayered 2D Cu(Mn) spin glass film has been investigated in SQUID-magnetometer. sample is constant magnetic (10 Oe) from high temperature, where at equilibrium, to temperature below freezing T ƒ . At then found increase with time temperatures near , showing an initial decrease followed by long scales intermediate and only decreases lower temperatures. behaviour, including surprising downward away thermodynamic equilibrium magnetisation, qualitatively interpreted terms domain model.