摘要:
A recording medium according to the invention has a magnetic recording layer with an L1 0 magnetic material deposited with a (111) preferred orientation and soft underlayer (SUL). One set of embodiments includes an intermediate layer (seed layer or underlayer) between the L1 0 media and SUL. The intermediate layer can be a close-packed surface structure (triangular lattice) to promote (111) orientation of the L1 0 media. For example, the intermediate layer can be a (111) oriented, face-centered-cubic (fcc) material such as platinum, palladium, iridium, rhodium, FePt, FePd, or FePdPt alloys; or the intermediate layer can be a (100) oriented hexagonal-close-packed (hcp) material such as ruthenium, rhenium, or osmium. Alternatively, the intermediate layer can be an amorphous material. The L1 0 recording layer of the invention can be deposited with a matrix material to form grain boundaries and provide magnetic isolation of the grains of L1 0 material.
摘要:
A ferroelectric three-dimensional solid-state memory is formed from a plurality of bit lines, a plurality of layers, a plurality of tree structures and a plurality of plate lines. The bit lines are arranged in a first plane and extend in a first direction. Each layer includes an array of ferroelectric capacitor memory cells. Each tree structure corresponds to a bit line and has a trunk portion and a plurality of branch portions. The trunk portion of each tree structure extends from a corresponding bit line. Each branch portion corresponds to a layer and extends from the trunk portion of the tree structure. Plate lines is arranged in each layer and overlap the branch portion of each tree structure in the corresponding layer at a plurality of intersection regions. A 0T-FeRAM memory cell is located at each intersection region in a layer.
摘要:
A ferroelectric three-dimensional solid-state memory is formed from a plurality of bit lines, a plurality of layers, a plurality of tree structures and a plurality of plate lines. The bit lines are arranged in a first plane and extend in a first direction. Each layer includes an array of ferroelectric capacitor memory cells. Each tree structure corresponds to a bit line and has a trunk portion and a plurality of branch portions. The trunk portion of each tree structure extends from a corresponding bit line. Each branch portion corresponds to a layer and extends from the trunk portion of the tree structure. Plate lines is arranged in each layer and overlap the branch portion of each tree structure in the corresponding layer at a plurality of intersection regions. A 0T-FeRAM memory cell is located at each intersection region in a layer.