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    • 2. 发明授权
    • Magnetoelectric memory
    • 磁电存储器
    • US08908422B2
    • 2014-12-09
    • US13704850
    • 2011-06-16
    • Nicolas TiercelinYannick DuschPhilippe Jacques PernodVladimir Preobrazhensky
    • Nicolas TiercelinYannick DuschPhilippe Jacques PernodVladimir Preobrazhensky
    • G11C11/00G11C11/14G11C11/15G11C11/56G11C11/16H01L27/20
    • G11C11/14G11C11/16G11C11/161G11C11/165G11C11/1675G11C11/2275G11C11/5607H01L27/20
    • A magnetoelectric memory element includes a magnetic element having an easy magnetization axis aligned along a first axis, means for applying to the magnetic element a magnetic polarization field aligned along a second axis not parallel to the first axis, a piezoelectric or electrostrictive substrate mechanically coupled with the magnetic element, and first and second electrodes arranged to apply an electrical field to the substrate so that the substrate exerts, on said magnetic element, a non-isotropic mechanical stress of a main direction generally oriented along a distinct third axis coplanar with the first and second axes. The magnetic element exhibits, by a combined effect of the magnetic polarization field and the easy magnetization axis, two distinct states of stable equilibrium of magnetization, corresponding to two not mutually opposed magnetization directions. The non-isotropic mechanical stress is sufficiently intense to induce a switchover between the two distinct states.
    • 磁电存储元件包括具有沿着第一轴对准的容易磁化轴的磁性元件,用于向磁性元件施加沿着不平行于第一轴线的第二轴对准的磁极化场的装置,与第一轴不平行的压电或电致伸缩衬底, 所述磁性元件以及布置成向所述基板施加电场的第一和第二电极,使得所述基板在所述磁性元件上施加主方向的非各向异性机械应力,所述主方向通常沿着与第一 和第二轴。 磁性元件通过磁极化场和容易磁化轴的组合效应表现出两个不同的磁化平衡平衡状态,对应于两个不相互相反的磁化方向。 非均质机械应力足够强烈以引起两种不同状态之间的切换。