Tunable high magnetic field thermal hysteresis for exchange-coupled double layers

Two types of tunable thermal hysteresis are observed for the first time in exchange-coupled double layer (ECDL) structures. For low external magnetic fields, ECDLs show one compensation temperature where the measurement of the magnetization as a function of temperature displays a bow-tie shape. For high fields a new type of tunable thermal hysteresis is observed due to an interface wall created between the layers where the ECDL shows two different compensation temperatures. The widths of both forms of thermal hysteresis are tunable with a change in external magnetic field