Temperature dependent switching properties of patterned 200 nm Ni81Fe19 elements

摘要: Quasistatic magnetization switching of patterned 200 nm wide Ni81Fe19 elements has been systematically studied over a range temperatures. In large aspect-ratio elements, the field between two bistable states decreases linearly as temperature increases, in good agreement with thermally activated nucleation theory. small however, occurs through third stable state: vortex state. Although mechanism is drastically different these structures, fields also are dependent on temperature.