摘要:
A memory element is provided. The memory element includes a memory layer that retains information based on a magnetization state of a magnetic material, in which a magnetization pinned layer is provided for the memory layer through an intermediate layer, the intermediate layer is formed of an insulator, spin-polarized electrons are injected in a stacking direction to change a magnetization direction of the memory layer, so that information is recorded in the memory layer, and a fine oxide is dispersed in an entire or part of a ferromagnetic layer forming the memory layer.
摘要:
A memory device is provided. The memory device includes a memory layer and a fixed-magnetization layer. The memory layer retains information based on a magnetization state of a magnetic material. The fixed-magnetization layer is formed on the memory layer through an intermediate layer made of an insulating material. The information is recorded on the memory layer with a change in a magnetization direction of the memory layer caused by injecting a spin-polarized electron in a stacked direction. A level of effective demagnetizing field, which is received by the memory layer, is smaller than a saturation-magnetization level of magnetization of the memory layer.
摘要:
A memory including a memory element having a memory layer that retains information based on a magnetization state of a magnetic material, and a conductor electrically connected to the memory element is provided. In the memory, a magnetization pinned layer is provided for the memory layer through an intermediate layer, the intermediate layer is formed of an insulator, and spin-polarized electrons are injected in a stacking direction to invert a magnetization direction of the memory layer, so that information is recorded in the memory layer. The magnetic material is also provided for the conductor, so that a magnetic field with current flowing in the conductor is enhanced and a leakage magnetic field is applied to the memory layer to cause a deviation of the magnetization direction of the memory layer. Current in the stacking direction flows into the memory element through the conductor, so that spin-polarized electrons are injected.
摘要:
A memory element including a memory layer that retains information based on a magnetization state of a magnetic material is provided. In the memory element, a magnetization pinned layer is provided for the memory layer through an intermediate layer, the intermediate layer is formed of an insulator, spin-polarized electrons are injected in a stacking direction to change a magnetization direction of the memory layer, so that information is recorded in the memory layer. Also, a ferromagnetic layer forming the memory layer has a magnetostriction constant of 1×10−5 or more.
摘要:
A storage element includes a storage layer for holding information by use of a magnetization state of a magnetic material, with a pinned magnetization layer provided on one side of the storage layer, with an intermediate layer, to form a laminate film, and with the direction of magnetization of the storage layer being changed by passing a current in the lamination direction so as to record information in the storage layer, wherein the radius of curvature, R, at end portions of a major axis of a plan-view pattern of at least the storage layer, in the laminate film constituting the storage element, satisfies the condition, R≦100 nm.
摘要:
A random number generating device includes: a random number generator configured to have a plurality of random number generating elements that generate a random number in response to supply of a spin-injection current; and a temperature controller.
摘要:
A random number generating device includes: a random number generator configured to have a plurality of random number generating elements that generate a random number in response to supply of a spin-injection current; and a temperature controller.
摘要:
A recording method for a magnetic memory device that includes applying, when recording one piece of information, one or more main pulses and one or more sub-pulses in the same direction and applying the one or more sub-pulses after the one or more main pulses, the one or more main pulses each being a pulse that has a sufficient pulse height and pulse width to record information, the one or more sub-pulses each being a pulse that satisfies at least one of conditions that a pulse width is shorter than that of the one or more main pulses and that a pulse height is smaller than that of the one or more main pulses.
摘要:
[Object] To provide a recording method for a magnetic memory device including a recording layer that holds information as a magnetization direction of a magnetic body and a magnetization reference layer that is provided with respect to the recording layer with an insulation layer interposed therebetween, the magnetic memory device being recorded with information by a current flowing between the recording layer and the magnetization reference layer via the insulation layer, the recording method being capable of maintaining, even when a write pulse considerably higher than an inversion threshold value is applied, the same level of error rate as in a case where a write pulse a little higher than the inversion threshold value is applied.[Solving Means] A recording method for a magnetic memory device includes applying, when recording one piece of information, one or more main pulses and one or more sub-pulses in the same direction and applying the one or more sub-pulses after the one or more main pulses, the one or more main pulses each being a pulse that has a sufficient pulse height and pulse width to record information, the one or more sub-pulses each being a pulse that satisfies at least one of conditions that a pulse width is shorter than that of the one or more main pulses and that a pulse height is smaller than that of the one or more main pulses.
摘要:
Disclosed herein is an information storage element including: a word electrode includes a first magnetic material that is continuously formed and is electrically conductive; a non-magnetic film formed in contact with the first magnetic material of the word electrode; a second magnetic material connected to the first magnetic material via the non-magnetic film; a magnetization setting mechanism disposed near at least one end part of both end parts of the word electrode and sets direction of magnetization of the end part of the word electrode; a coercivity decreasing mechanism decreases coercivity of the second magnetic material; and an electrically-conductive bit electrode so formed as to serve also as the second magnetic material or be formed in parallel to the second magnetic material, the bit electrode being so continuously formed as to intersect with the word electrode.