摘要:
Embodiments relate to magnetoresistive (xMR) sensors. In an embodiment, an xMR stack structure is configured to form two different xMR elements that can be coupled to form a locally differential Wheatstone bridge. The result is a highly sensitive magnetic sensor with small dimensions and robustness against thermal drift and sensor/encoder pitch mismatch that can be produced using standard processing equipment. Embodiments also relate to methods of forming and patterning the stack structure and sensors that provide information regarding direction in addition to speed.
摘要:
According to an embodiment, an integrated circuit includes a magneto-resistive memory cell. The magneto-resistive memory cell includes: a first ferromagnetic layer; a second ferromagnetic layer; and a nonmagnetic layer being disposed between the first ferromagnetic layer and the second ferromagnetic layer. The integrated circuit further includes a programming circuit configured to route a programming current through the magneto-resistive memory cell, wherein the programming current programs the magnetizations of the first ferromagnetic layer and of the second ferromagnetic layer by spin induced switching effects.
摘要:
According to one embodiment of the present invention, an integrated circuit includes at least one memory device including: a reactive electrode layer, an inert electrode layer, and a solid electrolyte layer being disposed between the reactive electrode layer and the inert electrode layer; at least one interface layer being disposed between the solid electrolyte layer and the reactive electrode layer and/or between the solid electrolyte layer and the inert electrode layer. The material parameters of the at least one interface layer are chosen such that a crystallization of the solid electrolyte layer is at least partially suppressed.
摘要:
A magnetic field sensor structure including a first magnetoresistive element in a spin-valve arrangement with a first reference layer structure with a first reference magnetization direction and a second magnetoresistive element in a spin-valve arrangement with a second reference layer structure with a second reference magnetization direction, wherein the first and second magnetoresistive elements are arranged in a layer vertically above each other and galvanically isolated from each other by an intermediate layer, and wherein the first and second reference magnetization directions are different.
摘要:
A first embodiment discloses a method of forming a patterned resist layer for patterning a substrate. A resist layer is formed on or above a substrate. An inorganic layer is formed on the resist layer. The resist layer covered with the inorganic layer is lithographically exposed. The resist layer covered with the inorganic layer is patterned by etching, thereby forming a patterned resist layer.
摘要:
A solid state electrolyte memory structure includes a solid state electrolyte layer, a metal layer on the solid state electrolyte layer, and an etch stop layer on the metal layer.
摘要:
Methods of manufacturing MTJ memory cells and structures thereof. A diffusion barrier is disposed between an anti-ferromagnetic layer and a pinned layer of an MTJ memory cell to improve thermal stability of the MTJ memory cell. The diffusion barrier may comprise an amorphous material or a NiFe alloy. An amorphous material may be disposed adjacent a bottom surface of a tunnel junction, within a free layer, or both. An MTJ memory cell with improved thermal stability and decreased Neel coupling is achieved.
摘要:
A magneto resistive memory device is fabricated by etching a blanket metal stack comprised of a buffer layer, pinned magnetic layer, a tunnel barrier layer and a free magnetic layer. The problem of junction shorting from resputtered metal during the etching process is eliminated by formation of a protective spacer covering the side of the freelayer and tunnel barrier interface. The spacer is formed following the first etch through the free layer which stops on the barrier layer. After spacer formation a second etch is made to isolate the device. The patterning of the device tunnel junction is made using a disposable mandrel method that enables a self-aligned contact to be made following the completion of the device patterning process.
摘要:
A method of patterning a magnetic tunnel junction (MTJ) stack is provided. According to such method, an MTJ stack is formed having a free layer, a pinned layer and a tunnel barrier layer disposed between the free layer and the pinned layer. A first area of the MTJ stack is masked while the free layer of the MTJ is exposed in a second area. The free layer is then rendered electrically and magnetically inactive in the second area.
摘要:
Methods of manufacturing MTJ memory cells and structures thereof. A diffusion barrier is disposed between an anti-ferromagnetic layer and a pinned layer of an MTJ memory cell to improve thermal stability of the MTJ memory cell. The diffusion barrier may comprise an amorphous material or a NiFe alloy. An amorphous material may be disposed adjacent a bottom surface of a tunnel junction, within a free layer, or both. An MTJ memory cell with improved thermal stability and decreased Neel coupling is achieved.