Abstract: A memory includes: a magnet including a first and second portions adjacent in a first direction. The first portion has a first dimension in a second direction at a first position at which a dimension of the magnet in the second direction is maximum, the second direction perpendicular to the first direction, the second portion has a second dimension in the second direction at a second position at which a dimension of the magnet in the second direction is minimum, the second dimension smaller than the first dimension, the first portion is continuous to the second portion via a third position between the first and second positions, a curve corresponding to an outer of the magnet extends between the first and third positions, and the curve passes through a side closer to the central axis of the magnet than a straight line connecting the first and second positions.

Abstract: According to one embodiment, a magnetic memory includes a first magnetic member extending along a first direction. First and second wires extend along a second direction. The first magnetic member is located between the first and second wirings in plan view from the first direction. A second magnetic member has a first portion above the first and second wirings, a second portion between the first and second wirings, and a third portion below the first and second wirings. At least one of the first portion or the third portion of the second magnetic member has a lower saturation magnetization than the second portion.

Abstract: A magnetic memory of the present embodiment includes an electrode extending along a plane including a first direction and a second direction, a first wiring extending in the first direction, second wirings between the electrode and the first wiring, extending in the second direction and arranged in the first direction, first magnetic members each including a first part electrically connected to the first wiring and a second part electrically connected to the electrode, extending in a third direction, and being positioned between neighboring two of the second wirings when seen from the third direction, and a control circuit. When writing first information to one first magnetic member, the control circuit supplies first current to at least two second wirings positioned on one side of the one first magnetic member in the first direction.

Abstract: A magnetic memory includes first magnetic members extending along a first direction. First and second wirings are spaced apart from the first magnetic members on a second end side of the first magnetic members. At least one of the first magnetic members is between the first and second wirings in a plan view from the first direction. A second magnetic member has a first portion facing the first wiring and electrically connected to a first magnetic member on one side and a second portion facing the first wiring on an opposite side. The second portion is electrically connected to another first magnetic member. A control circuit causes a current to flow through one of the first wiring or the second wiring when data is written into the first magnetic member that is between the first wiring and the second wiring.

Abstract: A magnetic memory includes first and second wirings, a magnetic memory line including first and second portions and extending along a first direction, the second portion electrically connected to the first wiring, and a first magnetic member electrically connected to the first portion and the second wiring and including first and second magnetic portions each having an annular shape and overlapping an end portion of the first portion of the memory line as viewed from the first direction, a third magnetic portion having a cylindrical shape and extending between an inner end of the first magnetic portion and an inner end of the second magnetic portion, and a fourth magnetic portion having a cylindrical shape and extending between an outer end of the first magnetic portion and an outer end of the second magnetic portion.

Abstract: A magnetic memory of the present embodiment includes an electrode extending along a plane including a first direction and a second direction, a first wiring extending in the first direction, second wirings between the electrode and the first wiring, extending in the second direction and arranged in the first direction, first magnetic members each including a first part electrically connected to the first wiring and a second part electrically connected to the electrode, extending in a third direction, and being positioned between neighboring two of the second wirings when seen from the third direction, and a control circuit. When writing first information to one first magnetic member, the control circuit supplies first current to at least two second wirings positioned on one side of the one first magnetic member in the first direction.

Abstract: A storage device includes: a memory unit and a first pillar. The first pillar includes: a first region having a third portion between a first and a second portion respectively having a first and a second maximum diameter, and having a first minimum diameter, the first and second portions defining a first distance; a second region having a sixth portion between a fourth and a fifth portion respectively having a third and a fourth maximum diameter, and having a second minimum diameter, the fourth and fifth portions defining a second distance; and a third region between the first and second regions, having a ninth portion between a seventh and an eighth portion respectively having a fifth and a sixth maximum diameter, and having a third minimum diameter, the seventh and eighth portions defining a third distance shorter than each of the first and second distances.

Abstract: A magnetic memory according to en embodiment includes: a first and second wirings; an insulator portion; a magnetic member including: a first portion electrically connected to the first wiring; a second portion electrically connected to the second wiring; and a third portion disposed between the first and second portions, the magnetic member extending in a first direction from the first portion toward the second portion and surrounding the insulator portion, and in a cross-section parallel to the first direction and including part of the magnetic member and part of the insulator portion, a curvature of the first portion being smaller than a curvature of the third portion, a length of the first portion in the first direction being greater than half a length of the third portion in the first direction; and a control circuit electrically connected to the first and second wirings.

Abstract: A magnetic memory according to an embodiment includes: a magnetic member including a first to third magnetic parts, the first magnetic part including a first portion and a second portion and extending in a first direction from the first portion to the second portion, the second magnetic part extending in a second direction that crosses the first direction, and the third magnetic part connecting the second magnetic part and the first portion; a first nonmagnetic metal layer arranged along the third magnetic part, the first nonmagnetic metal layer including a first end portion on a side of the second portion, a position of the first end portion along the first direction being between positions of the first and second portions along the first direction; and a first and second electrodes supplying a current between the first and second magnetic parts via the third magnetic part.

Abstract: A magnetic memory according to an embodiment includes: a first wiring and a second wiring; a nonmagnetic conductor extending in a first direction; a first magnetic member including a first portion electrically connected to the first wiring and a second portion electrically connected to the second wiring, the first magnetic member extending in the first direction from the first portion to the second portion to surround the nonmagnetic conductor; an insulation portion disposed between the nonmagnetic conductor and the first magnetic member; and a controller electrically connected to the nonmagnetic conductor, the first wiring, and the second wiring.

Abstract: According to one embodiment, a magnetic memory includes a magnetic body with two portions of a first dimension in a first direction which are spaced from each other a second direction and another portion that has a second dimension less than the first dimension in the first direction, which is between the two other portions. A circuit supplies a shift pulse to the magnetic body. The shift pulse includes a first pulse and a second pulse and moves a domain wall in the magnetic body along the second direction. The first pulse has a first pulse width. The second pulse has a second pulse width less than the first pulse width. The second pulse is supplied to the magnetic body after the first pulse.

Abstract: According to one embodiment, a device includes a member including a first portion having a first dimension in first direction, a second portion spaced from the first portion and having a second dimension in the first direction, a third portion between the first and second portions and having a third dimension in the first direction, and a fourth portion between the first and third portions and having a fourth dimension in the first direction; and a circuit to supply a shift pulse including first and second pulses to the member and move a domain wall in the member. The third dimension is less than the first dimension. The second and fourth dimensions are less than the third dimension. A second value of the second pulse is less than a first value of the first pulse.

Abstract: A magnetic memory according to an embodiment includes: a magnetic member having a cylindrical form, the magnetic member including a first end portion and a second end portion and extending in a first direction from the first end portion to the second end portion, the first end portion having an end face, which includes a face inclined with respect to a plane perpendicular to the first direction.

Abstract: According to one embodiment, a device includes a member including a first portion having a first dimension in first direction, a second portion spaced from the first portion and having a second dimension in the first direction, a third portion between the first and second portions and having a third dimension in the first direction, and a fourth portion between the first and third portions and having a fourth dimension in the first direction; and a circuit to supply a shift pulse including first and second pulses to the member and move a domain wall in the member. The third dimension is less than the first dimension. The second and fourth dimensions are less than the third dimension. A second value of the second pulse is less than a first value of the first pulse.

Abstract: According to one embodiment, a magnetic memory includes a magnetic body with two portions of a first dimension in a first direction which are spaced from each other a second direction and another portion that has a second dimension less than the first dimension in the first direction, which is between the two other portions. A circuit supplies a shift pulse to the magnetic body. The shift pulse includes a first pulse and a second pulse and moves a domain wall in the magnetic body along the second direction. The first pulse has a first pulse width. The second pulse has a second pulse width less than the first pulse width. The second pulse is supplied to the magnetic body after the first pulse.

Abstract: A magnetic storage device of an embodiment includes: a first magnetic part including a first portion and a second portion and extending in a first direction from the first portion to the second portion; a layered part which is stacked on the first magnetic part in a second direction intersecting with the first direction; a first electrode electrically connected with the first portion; and a second electrode electrically connected with the second portion. The layered part includes a first layer and a second layer which is disposed between the first layer and the first magnetic part, the second layer includes a metal oxide, and the first layer includes at least one selected from the group consisting of a metal nitride and a metal carbide.

Abstract: A magnetic memory according to an embodiment includes: a magnetic member including a first to third magnetic parts, the first magnetic part including a first portion and a second portion and extending in a first direction from the first portion to the second portion, the second magnetic part extending in a second direction that crosses the first direction, and the third magnetic part connecting the second magnetic part and the first portion; a first nonmagnetic metal layer arranged along the third magnetic part, the first nonmagnetic metal layer including a first end portion on a side of the second portion, a position of the first end portion along the first direction being between positions of the first and second portions along the first direction; and a first and second electrodes supplying a current between the first and second magnetic parts via the third magnetic part.

Abstract: A magnetic storage device of an embodiment includes: a first magnetic part including a first portion and a second portion and extending in a first direction from the first portion to the second portion; a layered part which is stacked on the first magnetic part in a second direction intersecting with the first direction; a first electrode electrically connected with the first portion; and a second electrode electrically connected with the second portion. The layered part includes a first layer and a second layer which is disposed between the first layer and the first magnetic part, the second layer includes a metal oxide, and the first layer includes at least one selected from the group consisting of a metal nitride and a metal carbide.

Abstract: A magnetic memory according to an embodiment includes: a magnetic member having a cylindrical form, the magnetic member including a first end portion and a second end portion and extending in a first direction from the first end portion to the second end portion, the first end portion having an end face, which includes a face inclined with respect to a plane perpendicular to the first direction.

Abstract: A manufacturing method of the honeycomb structure uses a grinding wheel having a coarse abrasive grain layer and a pair of fine abrasive grain layers sintered and secured to be formed on both sides of the coarse abrasive grain layer, and has a grinding wheel rotating step of rotating the pair of grinding wheels disposed via a predetermined space in a state where fine abrasive grain layers of the grinding wheels face each other; a conveying step of conveying a honeycomb formed body formed by extrusion and the like; an end face grinding step of grinding end faces of the conveyed honeycomb formed body with the rotating grinding wheels; and a firing step of firing the honeycomb formed body.