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US09508924B2 Method and system for providing rare earth magnetic junctions usable in spin transfer torque magnetic random access memory applications 有权
提供可用于旋转转矩磁性随机存取存储器应用中的稀土磁结的方法和系统

Method and system for providing rare earth magnetic junctions usable in spin transfer torque magnetic random access memory applications
Abstract:
A magnetic junction usable in a magnetic device and a method for providing the magnetic junction are described. The magnetic junction includes a free layer, a pinned layer and nonmagnetic spacer layer between the free and pinned layers. The free layer is switchable between stable magnetic states when a write current is passed through the magnetic junction. The free and pinned layers each has a layer perpendicular magnetic anisotropy energy greater than an out-of-plane demagnetization energy. At least one of the pinned layer and the free layer includes a multilayer. The multilayer includes at least one bilayer. Each of the bilayer(s) has a first layer and a second layer. The first layer includes an alloy of a magnetic transition metal and a rare earth. The second layer includes an amorphous magnetic layer. The multilayer has a nonzero perpendicular magnetic anisotropy up to at least four hundred degrees Celsius.
Abstract(Chinese):

描述了可用于磁性装置的磁结和提供磁结的方法。 磁性结包括自由层，被钉扎层和位于游离层和被钉扎层之间的非磁性间隔层。 当写入电流通过磁结时，自由层可在稳定的磁状态之间切换。 自由和被钉扎的层各自具有大于面外去磁能的垂直磁各向异性能的层。 钉扎层和自由层中的至少一个包括多层。 多层包括至少一个双层。 每个双层具有第一层和第二层。 第一层包括磁性过渡金属和稀土的合金。 第二层包括非晶磁性层。 多层具有至多四百摄氏度的非零垂直磁各向异性。

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