摘要:
A readback system includes a magnetic sensor that receives a sensor current. The magnetic sensor senses magnetic bits at a bit frequency and generates a sensor output. The readback system includes a channel circuit that modulates the sensor current at a modulation frequency higher than the bit frequency. The channel circuit samples the sensor output and combines multiple samples of the sensor output per magnetic bit into a combined sample output.
摘要:
A resistive random access memory (RRAM) cell that includes a first electrode having a lower portion, a continuous side portion and an upper portion, the lower portion and the continuous side portion having an outer surface and an inner surface; a resistive layer having a lower portion, a continuous side portion and an upper portion, the lower portion and the continuous side portion having an outer surface and an inner surface; and a second electrode having a lower portion, an upper portion and an outer surface; wherein the outer surface of the resistive layer directly contacts the inner surface of the first electrode.
摘要:
In some embodiments of the invention a non-volatile memory cell is provided with a first electrode, a second electrode, and one or more side layers of a ferroelectric metal oxide and a ferroelectric material layer between the first and second electrodes. The ferroelectric material layer may be provided between, e.g., adjacent, two side layers of a ferroelectric metal oxide or between a single layer of a ferroelectric metal oxide and an electrode. The ferroelectric metal oxide may in some cases include a uniform layered structure such as a bismuth layer-structured ferroelectric material like Bi4Ti3O12. In some embodiments, the ferroelectric material layer is formed at least partially from PbZrxTi1-xO3. A non-volatile memory array including such memory cells is also provided.
摘要翻译:在本发明的一些实施例中,非易失性存储单元在第一和第二电极之间设置有第一电极,第二电极以及铁电金属氧化物和铁电材料层的一个或多个侧层。 铁电材料层可以设置在例如铁电金属氧化物的相邻的两个侧层之间或者设置在单层铁电金属氧化物和电极之间。 在一些情况下,铁电金属氧化物可以包括均匀的层状结构,例如诸如Bi 4 Ti 3 O 12的铋层结构的铁电材料。 在一些实施例中,铁电材料层至少部分地由PbZrxTi1-xO3形成。 还提供了包括这种存储单元的非易失性存储器阵列。
摘要:
A resistive random access memory (RRAM) cell that includes a first electrode having a lower portion, a continuous side portion and an upper portion, the lower portion and the continuous side portion having an outer surface and an inner surface; a resistive layer having a lower portion, a continuous side portion and an upper portion, the lower portion and the continuous side portion having an outer surface and an inner surface; and a second electrode having a lower portion, an upper portion and an outer surface; wherein the outer surface of the resistive layer directly contacts the inner surface of the first electrode.
摘要:
A resistive random access memory (RRAM) cell that includes a first electrode having a lower portion, a continuous side portion and an upper portion, the lower portion and the continuous side portion having an outer surface and an inner surface; a resistive layer having a lower portion, a continuous side portion and an upper portion, the lower portion and the continuous side portion having an outer surface and an inner surface; and a second electrode having a lower portion, an upper portion and an outer surface; wherein the outer surface of the resistive layer directly contacts the inner surface of the first electrode.
摘要:
A system includes a magnetic device for writing to and reading from a magnetic medium and a sensor disposed adjacent to the magnetic device and proximate to the magnetic medium. The sensor generates signals related to thermal variations in the sensor caused by changes in a distance between the magnetic device and the magnetic medium.
摘要:
A system includes a magnetic device for writing to and reading from a magnetic medium and a sensor disposed adjacent to the magnetic device and proximate to the magnetic medium. The sensor generates signals related to thermal variations in the sensor caused by changes in a distance between the magnetic device and the magnetic medium.
摘要:
Spinwave transmission systems that include switching devices to direct the transmission of the spinwaves used for data transfer and processing. In one particular embodiment, a system for spinwave transmission has a first magnetic stripe configured for transmission of a spinwave and a second magnetic stripe for transmission of the spinwave, with a gap therebetween. The system includes a coupler that has a first orientation and a second orientation, where in the first orientation, no magnetic connection is made between the magnetic stripes, and in the second orientation, a connection is made between the magnetic stripes. The connection allows transmission of the spinwave from the first magnetic stripe to the second magnetic stripe. The first and second orientation may be the physical position of the coupler, moved by thermal, piezoelectric, or electrostatic forces, or, the first and second orientation may be a magnetic state of the coupler.
摘要:
The present invention relates to magnetic micro-electromechanical systems (MEMS) or magnetic MEMS devices, particularly electronic devices in which a member adjoins a base or substrate and extends from the substrate proximate to a magnetic field element having an altered output associated with movement of the member. The first magnetic field element is adapted to emit or detect a magnetic field and positioned proximate to the member, and the second magnetic field element adapted to emit or detect a magnetic field and positioned proximate to the base or substrate, such that movement of the member in a first direction by a non-magnetic force results in a variation of magnetic field strength associated with displacement of the sensor in a first direction. The invention also relates to methods for fabricating magnetic MEMS devices, transducers, sensors, and accelerometers.
摘要:
The present invention discloses a single-chip referenced full-bridge magnetoresistive magnetic-field sensor. The single-chip sensor is a Wheatstone bridge arrangement of magnetoresistive sensing elements and reference elements. The sensing elements and reference elements are formed from either magnetic tunnel junctions or giant magnetoresistive materials. The sensitivity of the reference and sensor elements is controlled through one or a combination of magnetic bias, exchange bias, shielding, or shape anisotropy. Moreover, the bridge output is tuned by setting the ratio of the reference and sensor arm resistance values to a predetermined ratio that optimizes the bridge output for offset and symmetry. The single-chip referenced-bridge magnetic field sensor of the present invention exhibits excellent temperature stability, low offset voltage, and excellent voltage symmetry.