公开(公告)号：US20240147869A1

公开(公告)日：2024-05-02

申请号：US17974148

申请日：2022-10-26

申请人： Harry Joseph TRODAHL ,  William Freeman HOLMES-HEWETT ,  Jackson David MILLER ,  Catherine Margaret Walker POT ,  Benjamin John RUCK ,  Eva-Maria Johanna ANTON

发明人： Harry Joseph TRODAHL ,  William Freeman HOLMES-HEWETT ,  Jackson David MILLER ,  Catherine Margaret Walker POT ,  Benjamin John RUCK ,  Eva-Maria Johanna ANTON

IPC分类号： H01L43/02 ,  H01L27/22 ,  H01L43/10

CPC分类号： H01L43/02 ,  H01L27/222 ,  H01L43/10

摘要： A switchable magnetic device comprising a first ferromagnetic material or layer comprising or consisting of a first rare earth nitride alloy, the first rare earth nitride alloy including at least two lanthanide species; a second ferromagnetic material or layer comprising or consisting of a second rare earth nitride alloy, the second rare earth nitride alloy including at least two lanthanide species; a blocking material or layer located between the first and second ferromagnetic materials or layers. The first and second ferromagnetic materials or layers have different coercive fields to permit independent control of a magnetic alignment of the first and second ferromagnetic materials or layers; and a remanent magnetic moment of the first ferromagnetic material or layer and a remanent magnetic moment of the second ferromagnetic material or layer spatially restrict or confine a peripheral magnetic field generated when the first and second ferromagnetic materials or layers are in an anti-aligned magnetic state to permit contrasting peripheral magnetic fields to be generated when the first and second ferromagnetic materials or layers are in anti-aligned and aligned magnetic states.