摘要:
Spin torque magnetic memory elements that have a pinned layer, two free layers, and a current-blocking insulating layer proximate to at least one of the free layers. The resistive state (e.g., low resistance or high resistance) of the memory elements is altered by passing electric current through the element in one direction. In other words, to change from a low resistance to a high resistance, the direction of electric current is the same as to change from a high resistance to a low resistance. The elements have a unidirectional write scheme.
摘要:
Method and apparatus for using a uni-directional write current to store different logic states in a non-volatile memory cell, such as a modified STRAM cell. In some embodiments, the memory cell has an unpinned ferromagnetic reference layer adjacent a cladded conductor, a ferromagnetic storage layer and a tunneling barrier between the reference layer and the storage layer. Passage of a current along the cladded conductor induces a selected magnetic orientation in the reference layer, which is transferred through the tunneling barrier for storage by the storage layer. Further, the orientation of the applying step is provided by a cladding layer adjacent a conductor along which a current is passed and the current induces a magnetic field in the cladding layer of the selected magnetic orientation.
摘要:
Magnetic shift registers in which data writing and reading is accomplished by moving the magnetic domain walls by electric current. Various embodiments of domain wall nodes or anchors that stabilize a domain wall are provided. In some embodiments, the wall anchors are elements separate from the magnetic track. In other embodiments, the wall anchors are disturbances in the physical configuration of the magnetic track. In still other embodiments, the wall anchors are disturbances in the material of the magnetic track.
摘要:
A magnetic device having a magnetic feature, the magnetic feature including a magnetic portion comprising a magnetic material, a region of non-magnetic material adjacent to the magnetic portion, and a stop layer disposed above the region of non-magnetic material, defining a planar upper boundary of the magnetic portion.
摘要:
Multilayer permanent magnet films comprising at least two permanent magnet layers separated by an interlayer are disclosed. In one embodiment, the multilayer permanent magnet film includes an interlayer deposited on a first permanent magnet layer, a seed layer deposited on the interlayer, and a second permanent magnet layer deposited on the seed layer. The permanent magnet layers may comprise a material such as CoPt, while the seed layer may comprise a material such as TiW. The interlayer may comprise a material such as Ta. The multilayer permanent magnet films possess favorable properties such as high magnetic coercivity (Hc) and high remnant magnetization (MR) at thicknesses which yield high magnetic fields. The films may be used in applications such as current perpendicular to the plane (CPP) magnetic sensors in which the multilayer permanent magnet film is used to magnetically bias the sensor.
摘要翻译:公开了包括由中间层分离的至少两个永磁体层的多层永磁体膜。 在一个实施例中,多层永磁体膜包括沉积在第一永磁体层上的层间,沉积在中间层上的晶种层和沉积在晶种层上的第二永磁体层。 永磁体层可以包括诸如CoPt的材料,而种子层可以包括诸如TiW的材料。 中间层可以包括诸如Ta的材料。 多层永磁体膜具有在产生高磁场的厚度方面具有良好的性能,例如高磁矫顽力(HCC)和高剩余磁化强度(M SUB R S)。 这些膜可以用于诸如垂直于平面(CPP)磁传感器的电流的应用,其中多层永磁体膜用于磁偏置传感器。
摘要:
An electrical interconnect is configured to provide an electrical connection between a first point and a second point. The interconnect includes a specular reflection layer adjacent a conductor layer. The conductor is configured to conduct electrons between the first and second points and the planar specular reflection layer confines the electrons to the conductor through specular reflection. This reduces electrical resistance of the electrical interconnect measured in a direction parallel with the specular reflection layer.