Magnetic studies in evaporated Ni/Pd multilayers

The magnetic properties of Ni/Pd multilayers, prepared by sequential evaporation in ultrahigh vacuum, have been studied. The Ni thickness dependence of the magnetization and magnetic anisotropy is discussed. The temperature dependence of the spontaneous magnetization is well described by a T3/2 law in all multilayers. A spin-wave theory has been used to explain the temperature dependence of the spontaneous magnetization, and the approximate values for the exchange interactions for various Ni layer thicknesses have been obtained.

Research highlights
► The magnetic properties of Ni/Pd multilayers, prepared by sequential evaporation in ultrahigh vacuum, have been studied.
► The temperature dependence of the spontaneous magnetization is well described by a T3/2 law in Ni/Pd multilayers.
► The spin-wave constant B was observed to depend on tNi nonmonotonically.
► A spin-wave theory has been used to explain the temperature dependence of the spontaneous magnetization.
► The approximate values for the exchange interactions for various Ni layer thicknesses have been obtained.