发明申请
US20050174838A1 MRAM memory cell having a weak intrinsic anisotropic storage layer and method of producing the same 审中-公开
具有弱本征各向异性存储层的MRAM存储单元及其制造方法

MRAM memory cell having a weak intrinsic anisotropic storage layer and method of producing the same
摘要:
An MRAM memory cell has a layer system of circular-disk-shaped layers. The memory cell includes two magnetic layers separated by a nonmagnetic intermediate layer. The first magnetic layer or reference layer exhibits hard-magnetic behavior. The second magnetic layer or storage layer exhibits soft-magnetic behavior. Information is stored by the magnetization state of the storage layer. The storage layer has a weak intrinsic anisotropy that defines a magnetic preferred direction. The magnetization direction of the reference layer is parallel to the magnetization direction of a remnant magnetization in the interior of the storage layer. The remnant magnetization occurs as a result of applying an external magnetic field with a field component perpendicular to the preferred direction of the intrinsic anisotropy of the storage layer.
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