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    • 93. 发明专利
    • Magneto-resistance effect element, and magnetic memory
    • 磁阻效应元件和磁记忆
    • JP2008098523A
    • 2008-04-24
    • JP2006280620
    • 2006-10-13
    • Toshiba Corp株式会社東芝
    • KITAGAWA EIJINAGASE TOSHIHIKOYOSHIKAWA MASAHISANISHIYAMA KATSUYAKISHI TATSUYAYODA HIROAKI
    • H01L43/10H01L21/8246H01L27/105H01L43/08
    • G11C11/16B82Y25/00H01F10/123H01F10/3236H01F10/3254H01F10/3286H01F10/329H01L43/08Y10S977/935
    • PROBLEM TO BE SOLVED: To improve thermal stability and reduce an inversion current density in magnetization inversion. SOLUTION: The magneto-resistance effect element includes: a magnetization-free layer 12 which contains a magnetic material, has magnetization of the direction vertical to a film surface, changes the direction of magnetization by an action of a spin-polarized electron, and has a fct-type crystal structure that a (001) surface is oriented; a first and second non-magnetic layers 13, 14 which are located to sandwich the magnetization-free layer 12 and has a tetragonal or cubic system crystal structure; and a magnetization fixed layer 11 which is located only on one side of the magnetization-free layer 12, moreover, is located on the surface opposite to the surface of the first non-magnetic layer 13 that the magnetization-free layer 12 is located, contains a magnetic material, has magnetization in the direction vertical to the film surface, and the direction of magnetization is fixed. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提高热稳定性并降低磁化反转中的反转电流密度。 解决方案:磁阻效应元件包括:含磁性材料的无磁化层12具有垂直于膜表面的方向的磁化,通过自旋极化电子的作用改变磁化方向 并具有(001)面取向的fct型晶体结构。 第一和第二非磁性层13,14位于夹着无磁化层12并具有四方晶系或立方晶系晶体结构; 此外,仅位于无磁化层12的一侧的磁化固定层11位于与无磁化层12所位于的第一非磁性层13的表面相反的表面上, 含有磁性材料,在垂直于膜表面的方向上具有磁化,并且磁化方向固定。 版权所有(C)2008,JPO&INPIT
    • 94. 发明专利
    • Tunnel magnetoresistance effect element and its manufacturing method
    • 隧道磁阻效应元件及其制造方法
    • JP2008066612A
    • 2008-03-21
    • JP2006244977
    • 2006-09-11
    • Fujitsu Ltd富士通株式会社
    • KOMAGAKI KOJIRO
    • H01L43/08G11B5/39H01F10/30H01F10/32H01F41/18H01L43/12
    • G11B5/3163B82Y10/00B82Y25/00B82Y40/00G01R33/093G01R33/098G11B5/3906G11B5/3909G11B5/398H01F10/3254H01F10/3281H01F41/303H01L43/08H01L43/12
    • PROBLEM TO BE SOLVED: To solve problems with the surface roughness of an antiferromagnetic layer and the crystallinity of a tunnel barrier layer to obtain favorable magnetoresistance characteristics, for achieving the thinning of a tunnel magnetoresistance effect element layer.
      SOLUTION: In a magnetoresistance effect layer in which an underlayer, an antiferromagnetic layer, a first stationary magnetic layer, a non-magnetic middle layer, a second stationary magnetic layer, a tunnel barrier layer, a free magnetic layer and a protective layer are stacked in order, by smoothing the first stationary magnetic layer, the nonmagnetic middle layer is also smoothed, whereby a stable antiferromagnetic exchange coupling can be obtained between the first stationary magnetic layer and the second stationary magnetic layer. Further, the tunnel barrier layer is also smoothed, whereby stable magnetoresistance characteristics can be obtained even if the layer is formed thin. Additionally, the tunnel barrier layer requiring crystallinity can have favorable magnetoresistive characteristics.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题为了解决反铁磁层的表面粗糙度和隧道势垒层的结晶度的问题,为获得良好的磁阻特性,为了实现隧道磁阻效应元件层的薄化。 解决方案:在其中下层,反铁磁性层,第一固定磁性层,非磁性中间层,第二固定磁性层,隧道势垒层,自由磁性层和保护性层的磁阻效应层中 层通过平滑第一固定磁性层,非磁性中间层也被平滑化,从而可以在第一固定磁性层和第二固定磁性层之间获得稳定的反铁磁交换耦合。 此外,隧道势垒层也被平滑化,由此即使形成薄层,也可以获得稳定的磁阻特性。 此外,需要结晶性的隧道势垒层可以具有良好的磁阻特性。 版权所有(C)2008,JPO&INPIT