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公开(公告)号：US4438508A
公开(公告)日：1984-03-20
申请号：US268027
申请日：1981-05-27
申请人： Marlies Urner-Willie , Peter Hansen
发明人： Marlies Urner-Willie , Peter Hansen
IPC分类号： H01F10/12 , G11B11/10 , G11B11/105 , G11C13/06 , H01F10/13 , H01F10/14 , H01F41/14 , H01F41/20
CPC分类号： G11C13/06 , G11B11/10586 , H01F10/135 , G11B11/10593 , Y10S428/90 , Y10T428/31681
摘要： A magneto-optical memory element consisting of a substrate, provided with an amorphous layer of an alloy of a rare-earth metal and a transition metal. The layer has a uniaxial magnetic anisotropy. Such memory elements are suitable for storing digital information in the form of magnetized areas, the magnetization direction of which can be read by means of the Kerr effect or Faraday effect. By adding bismuth and/or tin to the alloy the Kerr rotation and Faraday rotation can each be increased considerably, so that simpler reading of the stored information is possible.
摘要翻译： 一种磁光存储元件，由具有稀土类金属与过渡金属的合金的非晶层的基板构成。 该层具有单轴磁各向异性。 这种存储元件适用于以磁化区域的形式存储数字信息，其磁化方向可通过克尔效应或法拉第效应来读取。 通过向合金中添加铋和/或锡，可以大大增加克尔旋转和法拉第旋转，从而可以更简单地读取所存储的信息。
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公开(公告)号：US4367257A
公开(公告)日：1983-01-04
申请号：US254687
申请日：1981-04-16
申请人： Yoshihiro Arai , Makoto Nagao , Akira Nahara
发明人： Yoshihiro Arai , Makoto Nagao , Akira Nahara
CPC分类号： G11B5/64 , H01F10/135 , Y10S428/90 , Y10T428/265
摘要： A magnetic recording medium having a thin magnetic amorphous rare earth metal-transition metal alloy film is disclosed, the amorphous alloy film having an axis of easy magnetization in a direction substantially vertical to the film surface and containing a crystalline phase in the amorphous phase. The magnetic recording medium exhibits high coercive force over a wide compositional range.
摘要翻译： 公开了一种具有薄磁性无定形稀土金属 - 过渡金属合金膜的磁记录介质，所述非晶态合金膜在基本垂直于膜表面的方向上具有容易磁化的轴并且在非晶相中含有结晶相。 磁记录介质在宽的组成范围内表现出高的矫顽力。
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公开(公告)号：US4236946A
公开(公告)日：1980-12-02
申请号：US886020
申请日：1978-03-13
IPC分类号： C23C14/00 , C21D6/00 , C22F1/00 , C23C14/14 , C23C14/58 , H01F10/12 , H01F10/13 , H01F10/14 , H01F41/14 , C21D1/04
CPC分类号： C23C14/5806 , C23C14/14 , C23C14/58 , C23C14/584 , H01F10/132 , Y10S428/90
摘要： A sputtered thin film of an amorphous material composed of a magnetic transition metal X and element Y plus possibly an element Z has low coercivity for domains in the plane, has a well defined and stable magnetic easy axis which is extremely stable without heating above the Curie point, with a high and flat value of permeability from low frequencies to greater than 10 megahertz. Metal X can include at least one of Fe, Ni, and Co. Element Y can include at least one of Si and B. Element Z can be included composed of Cr, for example.
摘要翻译： 由磁性过渡金属X和元素Y以及可能的元素Z组成的非晶材料的溅射薄膜对于平面中的畴具有低矫顽力，具有良好限定且稳定的易磁化轴，其非常稳定而不加热居里 具有从低频到大于10兆赫的高平坦的磁导率值。 金属X可以包括Fe，Ni和Co中的至少一种。元素Y可以包括Si和B中的至少一种。元素Z可以包括例如由Cr构成。
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64.发明授权
公开(公告)号：US4202022A
公开(公告)日：1980-05-06
申请号：US933651
申请日：1978-08-14
IPC分类号： C22C45/00 , G03G5/16 , G03G19/00 , G11B5/86 , G11B11/105 , G11B27/36 , H01F10/12 , H01F10/13 , G11B5/32 , G11C13/04
CPC分类号： G11B11/10547 , C22C45/00 , C22C45/008 , G03G19/00 , G03G5/16 , G11B11/10515 , G11B27/36 , G11B5/865 , H01F10/135 , Y10S428/928 , Y10T428/12931
摘要： A magnetic transfer record film employed for magneto-optically reading magnetic record patterns. The magnetic transfer record film is formed, as the principal component, of an alloy of a heavy rare earth metal and a transition metal and has an easy axis of magnetization in a direction perpendicular to the film surface and further has an alloy composition included in a range of .+-.10% at the periphery of a center alloy composition where the saturation magnetic moment becomes minimum with respect to a change of the composition within a temperature range used. The magnetic transfer record film is deposited on a transparent substrate and positioned closely to a magnetic record medium on which a magnetic record pattern to be observed is stored, so that the magnetic record pattern is transferred to the magnetic transfer record film. An optical system is provided to magneto-optically read out the transferred magnetic record pattern from the magnetic transfer record film.
摘要翻译： 用于磁光读取磁记录图案的磁转印记录膜。 磁性记录膜作为主要成分形成重稀土金属和过渡金属的合金，并且在垂直于膜表面的方向上具有容易的磁化轴，并且还包括在 相对于所使用的温度范围内的组成变化，饱和磁矩变得最小的中心合金组成的周边处的+/- 10％的范围。 磁转印记录膜沉积在透明基板上并且紧密地定位在其上存储有待观察的磁记录图案的磁记录介质上，使得磁记录图案被传送到磁转印记录膜。 提供一种光学系统，用于从磁转印记录膜磁光读出转印的磁记录图形。
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公开(公告)号：US4126494A
公开(公告)日：1978-11-21
申请号：US733929
申请日：1976-10-19
IPC分类号： C22C45/00 , G03G5/16 , G03G19/00 , G11B5/86 , G11B11/105 , G11B27/36 , H01F10/12 , H01F10/13 , C22C19/00 , C22C28/00 , C22C38/00
CPC分类号： G03G5/16 , C22C45/00 , C22C45/008 , G03G19/00 , G11B11/10515 , G11B11/10547 , G11B27/36 , G11B5/865 , H01F10/12 , H01F10/13 , H01F10/135
摘要： A magnetic transfer record film employed for magneto-optically reading magnetic record patterns. The magnetic transfer record film is formed, as the principal component, of an alloy of a heavy rare earth metal and a transition metal and has an easy axis of magnetization in a direction perpendicular to the film surface and further has an alloy composition included in a range of .+-. 10% at the periphery of a center alloy composition where the saturation magnetic moment becomes minimum with respect to a change of the composition within a temperature range used. The magnetic transfer record film is deposited on a transparent substrate and positioned closely to a magnetic record medium on which a magnetic record pattern to be observed is stored, so that the magnetic record pattern is transferred to the magnetic transfer record film. An optical system is provided to magneto-optically read out the transferred magnetic record pattern from the magnetic transfer record film.
摘要翻译： 用于磁光读取磁记录图案的磁转印记录膜。 磁性记录膜作为主要成分形成重稀土金属和过渡金属的合金，并且在垂直于膜表面的方向上具有容易的磁化轴，并且还包括在 相对于所使用的温度范围内的组成变化，饱和磁矩变得最小的中心合金组成的周边处的+/- 10％的范围。 磁转印记录膜沉积在透明基板上并且紧密地定位在其上存储有待观察的磁记录图案的磁记录介质上，使得磁记录图案被传送到磁转印记录膜。 提供一种光学系统，用于从磁转印记录膜磁光读出转印的磁记录图形。
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公开(公告)号：US3965463A
公开(公告)日：1976-06-22
申请号：US581078
申请日：1975-05-27
CPC分类号： G02F1/0036 , G11B11/10 , G11B11/10582 , G11B11/10591 , G11C13/06 , G11C19/08 , G11C19/0808 , G11C19/085 , G11C19/0866 , H01F10/135 , G11C13/0004
摘要： Apparatus using amorphous magnetic compositions having uniaxial anisotropy include bubble domain apparatus, light modulating apparatus, permanent magnet systems, and tape and disc information handling systems. The amorphous magnetic composition can be prepared in thin film or bulk form or as particles in a binder. The anisotropy can be parallel to the plane of a film of this material or perpendicular to the film plane. The amorphous material is comprised of a single element or is a multicomponent system where as at least one of the components has an unimpaired spin so that the composition has a net magnetic moment. The amorphous composition exists as a microcrystalline structure having localized atomic ordering over a distance 25-100 A, or as a substantially amorphous structure where localized atomic ordering is over distances less than 25A. Binary and ternary compositions, either alloys or compounds, are suitable. The magnetic properties of the compositions can be changed during fabrication or after fabrication, and the compositions can be doped readily without adversely affecting magnetic properties.
摘要翻译： 使用具有单轴各向异性的非晶磁性组合物的装置包括气泡域装置，光调制装置，永磁体系统以及磁带和盘信息处理系统。 非晶磁性组合物可以以薄膜或本体形式或作为粘合剂中的颗粒制备。 各向异性可以平行于该材料的膜的平面或垂直于膜平面。 无定形材料由单一元件组成或是多组分系统，其中至少一个组分具有未受损的自旋，使得组合物具有净磁矩。 无定形组合物存在为在距离25-100A处具有局部原子排序的微晶结构，或者作为基本上非晶体结构，其中局部原子排序超过距离小于25A。 二元和三元组合物，合金或化合物都是合适的。 组合物的磁性能可以在制造期间或制造后改变，并且可以容易地掺杂组合物而不会不利地影响磁性。
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公开(公告)号：US11621393B2
公开(公告)日：2023-04-04
申请号：US17112484
申请日：2020-12-04
发明人： Lin Xue , Chando Park , Chi Hong Ching , Jaesoo Ahn , Mahendra Pakala
IPC分类号： H01L43/12 , C23C14/06 , C23C14/54 , H01F10/32 , H01F41/32 , H01L43/10 , H01L43/02 , H01F10/13 , H01L21/67 , C23C14/00 , H01F41/30 , H01F10/30 , G11C11/16
摘要： Embodiments of the disclosure provide methods and apparatus for fabricating magnetic tunnel junction (MTJ) structures on a substrate for MRAM applications. In one embodiment, a magnetic tunnel junction (MTJ) device structure includes a junction structure disposed on a substrate, the junction structure comprising a first ferromagnetic layer and a second ferromagnetic layer sandwiching a tunneling barrier layer, a dielectric capping layer disposed on the junction structure, a metal capping layer disposed on the junction structure, and a top buffer layer disposed on the metal capping layer.
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公开(公告)号：US11605499B2
公开(公告)日：2023-03-14
申请号：US16630006
申请日：2018-08-01
摘要： A magnetic film includes iron and copper distributed between opposing first and second major surfaces of the magnetic film. The copper has a first atomic concentration C1 at a first depth d1 from the first major surface and a peak second atomic concentration C2 at a second depth d2 from the first major surface, d2>d1, C2/C1≥5.
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公开(公告)号：US10008219B2
公开(公告)日：2018-06-26
申请号：US15153357
申请日：2016-05-12
发明人： Yuankai Zheng , Qunwen Leng
CPC分类号： G11B5/1272 , C23C14/14 , G11B5/3143 , H01F10/135 , H01F10/3218 , H01F10/3254 , H01F10/3268
摘要： Apparatuses and methods of recording read heads with a multi-layer anti-ferromagnetic (AFM) layer are provided. The AFM layer has gradient Manganese (Mn) compositions. A multi-layer AFM layer comprises a plurality of sub-layers having different Mn compositions. An upper sub-layer has a higher Mn composition than an lower sub-layer. Different types of gases may be used to deposit each sub-layer and the flow of each gas may be adjusted.
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公开(公告)号：US20170358388A1
公开(公告)日：2017-12-14
申请号：US15535319
申请日：2015-12-11
摘要： A sensor may include a core and a coil. The core may include a rectangular substrate, a layer of magnetically-permeable material disposed on the substrate, and an adhesive rigidly coupling two ends of the substrate so as to form a tube with the rectangular substrate. The coil may be wound on the tube. The core may further include a layer of radiopaque material. The core may further include a flex pad for electrically coupling the coil with an external system.
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