摘要:
An electro-magnetic device, such as magnetic memory device, is disclosed that includes means for structuring, attenuating or eliminating stray fields at the boundaries that produce an offset in the magneto-resistive response. The device comprises a conductive first layer and the attenuating means comprises a sink layer, electro-magnetically coupled to the first layer, to attenuate the stray boundary magneto-resistive offset at a boundary of the first layer during electrical operation.
摘要:
Magnetic memory devices are disclosed. In one embodiment, the device comprises a memory cell having an easy axis aligned along a first direction, the memory cell being configured so as to be most easily switched from one logic state to another when only receiving a magnetic field along the first direction, and a magnetic biasing element associated with the memory cell, the magnetic biasing element having a magnetic orientation aligned along a second direction different from the first direction.
摘要:
An electro-magnetic device, such as magnetic memory device, is disclosed that includes means for structuring, attenuating or eliminating stray fields at the boundaries that produce an offset in the magneto-resistive response. The device comprises a conductive first layer and the attenuating means comprises a sink layer, electro-magnetically coupled to the first layer, to attenuate the stray boundary magneto-resistive offset at a boundary of the first layer during electrical operation.
摘要:
A conductor structure for a magnetic memory is disclosed. The conductor structure includes one or more conductors that have a width that is less than a dimension of a memory cell in a direction the conductor crosses the memory cell. A thickness of the conductor is preselected to reduce a cross-sectional area of the conductor and increase a current density within the conductor. A magnetic field sufficient to rotate an alterable orientation of magnetization in a data layer of the memory cell can be generated by a reduced magnitude of a current flowing in the conductor due to the increased current density. Alternatively, the magnitude of the current can be reduced by increasing a thickness of the conductor to increase its area and reduce its resistance to the flow of electrons and partially cladding the conductor to reduce a total magnetic path around the conductor thereby increasing the magnetic field.
摘要:
A magnetic memory cell includes a first magneto-resistive device and a second magneto-resistive device. The first magneto-resistive device has a first sense layer. The second magneto-resistive device is connected in series with the first magneto-resistive device. The second magneto-resistive device has a second sense layer. At least one controlled nucleation site is placed on at least one of the first sense layer and the second sense layer.
摘要:
A thin film device and a method of providing thermal assistance therein is disclosed. Accordingly, a heater material is utilized to thermally assist in the operation of the thin film device. By utilizing a heater material to thermally assist in the operation of the thin film device, a substantial improvement in the accuracy and performance of the thin film device is achieved. A first aspect of the present invention is a thin film device. The thin film device includes at least one patterned thin film layer, a heater material coupled to the at least one patterned thin film layer for providing thermal assistance to the at least one of the patterned thin film layers and a conductor coupled to the heater material for supplying energy to the heater material.
摘要:
A magnetic memory array comprises a plurality of magnetic memory cells, a magnetic shielding disposed adjacent to at least one of the magnetic memory cells to reduce magnetic interference with respect to another of the magnetic memory cells, and an insulator disposed as to separate at least a portion of the magnetic shielding from the at least one magnetic memory cell. The magnetic shielding may be a magnetic shield layer, patterned magnetic shield materials, and/or magnetic particles embedded in the insulator.
摘要:
A magnetic memory cell write current threshold detector. The magnetic memory cell write current threshold detector includes a first MRAM test cell receiving a write current and sensing when the write current exceeds a first threshold, and a second MRAM test cell receiving the write current and sensing when the write current exceeds a second threshold.
摘要:
A ferromagnetic data layer of a magnetic memory element is formed with a controlled nucleation site. In some embodiments, the nucleation site may be a divot in the data layer or a protrusion from the data layer. A Magnetic Random Access Memory (“MRAM”) device may include an array of magnetic memory elements having data layers with controlled nucleation sites.
摘要:
In one embodiment, a memory device includes a plurality of magnetic data cells and a magnetic reference cell extending uninterrupted along more than one of the plurality of data cells.