摘要:
A magnetic structure includes a first portion and a plurality of second portions. The first portion extends in a first direction. The plurality of second portions extend from ends of the first portion in a second direction. The first and second directions are perpendicular to one another. Two magnetic domains magnetized in directions opposite to each other and a magnetic domain wall between the magnetic domains are formed in the magnetic structure.
摘要:
Provided are a semiconductor memory device and a method of programming the same. The semiconductor memory device includes a mode input value generating unit and a logic operating unit. The mode input value generating unit changes a connection state between input values of a current driving circuit so as to correspond to each of at least two operating modes, and defines a logic function of a magnetic memory cell connected to the current driving circuit in response to each operating mode. The logic operating unit performs a logic operation on the logic functions of at least two magnetic memory cells defined according to each of the operating modes and generates a result of logic operation.
摘要:
Information storage devices and methods of manufacturing the same are provided. An information storage device includes a magnetic layer formed on an underlayer. The underlayer has at least one first region and at least one second region. The first and second regions have different crystallinity characteristics. The magnetic layer has at least one third region formed on the at least one first region and at least one fourth region formed on the at least one second region. The third and fourth regions have different magnetic anisotropic energy constants.
摘要:
Provided may be a semiconductor device using magnetic domain wall movement. The semiconductor device may include a magnetic track having a plurality of magnetic domains and a thermal conductive insulating layer configured to contact the magnetic track. The thermal conductive insulating layer may prevent or reduce the magnetic track from being heated due to a current supplied to the magnetic track.
摘要:
A memory device and a method of fabricating the same are provided. The method includes forming a gate stack on a semiconductor substrate and partially exposing upper end portions of the semiconductor substrate by etching the gate stack to form a gate stack structure, and implanting a dopant into the exposed portions of the semiconductor substrate to form source and drain regions, wherein the gate stack structure is etched such that its width increases from top to bottom. Accordingly, it is possible to manufacture a memory device with high integration, using a simplified manufacture process.
摘要:
Provided are a complementary nonvolatile memory device, methods of operating and manufacturing the same, a logic device and semiconductor device having the same, and a reading circuit for the same. The complementary nonvolatile memory device includes a first nonvolatile memory and a second nonvolatile memory which are sequentially stacked and have a complementary relationship. The first and second nonvolatile memories are arranged so that upper surfaces thereof are contiguous.
摘要:
A method of manufacturing a nanochannel-array and a method of fabricating a nanodot using the nanochannel-array are provided. The nanochannel-array manufacturing method includes: performing first anodizing to form a first alumina layer having a channel array formed by a plurality of cavities on an aluminum substrate; etching the first alumina layer to a predetermined depth and forming a plurality of concave portions on the aluminum substrate, wherein each concave portion corresponds to the bottom of each channel of the first alumina layer; and performing second anodizing to form a second alumina layer having an array of a plurality of channels corresponding to the plurality of concave portions on the aluminum substrate. The array manufacturing method makes it possible to obtain finely ordered cavities and form nanoscale dots using the cavities.
摘要:
Disclosed are a muli-bit non-volatile memory device, a method of operating the same, and a method of manufacturing the multi-bit non-volatile memory device. A unit cell of the muli-bit non-volatile memory device may be formed on a semiconductor substrate may include: a plurality of channels disposed perpendicularly to the upper surface of the semiconductor substrate; a plurality of storage nodes disposed on opposite sides of the channels perpendicularly the upper surface of the semiconductor substrate; a control gate surrounding upper portions of the channels and the storage nodes, and side surfaces of the storage nodes; and an insulating film formed between the channels and the storage nodes, between the channels and the control gate, and between the storage nodes and the control gate.
摘要:
A multi bits flash memory device and a method of operating the same are disclosed. The multi bits flash memory device includes: a stacked structure including: a first active layer with a mesa-like form disposed on a substrate; a second active layer, having a different conductivity type from the first active layer, formed on the first active layer; an active interlayer isolation layer interposed between the first active layer and the second active layer such that the first active layer is electrically isolated from the second active layer; a common source and a common drain formed on a pair of opposite side surfaces of the stacked structure; a common first gate and a common second gate formed on the other pair of opposite side surfaces of the stacked structure; a tunnel dielectric layer interposed between the first and second gates and the first and second active layers; and a charge trap layer, storing charges that tunnel through the tunnel dielectric layer, interposed between the tunnel dielectric layer and the first and second gates.
摘要:
Provided are a complementary nonvolatile memory device, methods of operating and manufacturing the same, a logic device and semiconductor device having the same, and a reading circuit for the same. The complementary nonvolatile memory device includes a first nonvolatile memory and a second nonvolatile memory which are sequentially stacked and have a complementary relationship. The first and second nonvolatile memories are arranged so that upper surfaces thereof are contiguous.