Method of manufacturing a magnetoresistive random access memory device

    公开(公告)号:US11329219B2

    公开(公告)日:2022-05-10

    申请号:US16840741

    申请日:2020-04-06

    Abstract: In a method of manufacturing a magnetoresistive random access memory, a memory structure may be formed on a substrate. The memory structure may include a lower electrode, a magnetic tunnel junction (MTJ) structure, and an upper electrode sequentially stacked. A protection layer including silicon nitride may be formed to cover a surface of the memory structure. The protection layer may be formed by a chemical vapor deposition process using plasma and introducing deposition gases including a silicon source gas, a nitrogen source gas containing no hydrogen and a dissociation gas. Damages of the MTJ structure may be decreased during forming the protection layer. Thus, the MRAM may have improved characteristics.

    Thin reference layer for STT MRAM
    22.
    发明授权

    公开(公告)号:US10361361B2

    公开(公告)日:2019-07-23

    申请号:US15094064

    申请日:2016-04-08

    Abstract: Techniques relate to forming a magnetic tunnel junction (MTJ). A synthetic antiferromagnetic reference layer is adjacent to a tunnel barrier layer. The synthetic antiferromagnetic reference layer includes a first magnetic layer, a second magnetic layer, and a reference spacer layer sandwiched between the first magnetic layer and the second magnetic layer. A magnetic free layer is adjacent to the tunnel barrier layer so as to be opposite the synthetic antiferromagnetic reference layer. The synthetic antiferromagnetic reference layer has a thickness of at least one of 3 nanometers (nm), 4 nm, and 3-4 nm.

    Washing machine
    24.
    发明授权

    公开(公告)号:US12234596B2

    公开(公告)日:2025-02-25

    申请号:US18056865

    申请日:2022-11-18

    Abstract: A washing machine includes a water tank provided to store washing water in a cabinet, a rotating tub rotatably provided in the water tank, a pulsator provided in the rotating tub and rotated by a washing shaft, a driving motor configured to generate a rotational force for rotating the washing shaft, a clutch configured to selectively transmit the rotational force generated by the driving motor to a dewatering shaft for rotating the rotating tub and includes a housing through which the washing shaft and the dewatering shaft pass, a pulley including a first pulley rotated by the driving motor and a second pulley connected to the washing shaft, is connected to the first pulley by a belt, and configured to rotate the washing shaft, a bracket coupled to the second pulley and to which magnets are fixed, and a sensor unit coupled to the housing and configured to detect the number of rotations of the driving motor by detecting the magnets.

    MAGNETIC DEVICE
    27.
    发明申请

    公开(公告)号:US20220130581A1

    公开(公告)日:2022-04-28

    申请号:US17350157

    申请日:2021-06-17

    Abstract: A magnetic device includes a fixed layer including a fixed pattern, a free layer, and a tunnel barrier between the fixed layer and the free layer. The fixed pattern includes a first magnetic pattern, a second magnetic pattern, and a hybrid spacer, including a nonmagnetic material layer, between the first magnetic pattern and the second magnetic pattern, the nonmagnetic material including a plurality of magnetic nanoparticles dispersed therein.

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