2 results about "Boundary structure" patented technology

Storage system, and three-dimensional memory and method for manufacturing the same. The present disclosure provides a three-dimensional memory and a method for manufacturing the same. The present disclosure also provides a storage system. The three-dimensional memory according to the present disclosure comprises: a stack structure comprising insulating layers and gate layers alternately stacked, the stack structure further comprising a step region, the step region comprising a plurality of sub-regions arranged along a first direction, and a boundary region between any two adjacent sub-regions, each sub-region comprising a plurality of steps arranged along a second direction; in the boundary region, the intersection of adjacent steps forms a boundary structure; the first direction and the second direction are perpendicular to the stacking direction of the insulating layers and the gate layers, respectively; and a gate line slit structure penetrating through the stack structure; wherein part of the gate line slit structure is located in the boundary region and penetrates through at least one boundary structure.

The application discloses a preparation method of eutectoid-like oxide ceramic based on an amorphous crystallization process, which comprises the steps of preparing amorphous powder with specific eutectoid components and crystallizing the amorphous powder. The amorphous powder is prepared by a sol-gel method of metal salt complexation reaction; and the amorphous powder is rapidly hot-pressed and sintered by a joule heat pressing method to crystallize the amorphous powder into a shape, so as to prepare the eutectoid-like oxide ceramic. The joule heat pressing makes the amorphous powder rapidly crystallize, and the crystallization temperature is far lower than the eutectoid temperature; the crystallized grains are mutually nested and wound to form eutectoid structures, and a plurality of grain boundaries formed in the crystallization process due to the particle boundaries of the amorphous powder also exist; the specific binary boundary structure has a strong toughening effect on the mechanical properties; therefore, the eutectoid-like oxide ceramic has excellent mechanical properties.