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    • 1. 发明申请
    • Transistor Based on Resonant Tunneling Effect of Double Barrier Tunneling Junctions
    • 基于双阻挡隧道结共振隧穿效应的晶体管
    • US20080246023A1
    • 2008-10-09
    • US11663684
    • 2005-04-08
    • Zhongming ZengXiufeng HanJiafeng FengTianxing WangGuanxiang DuFeifei LiWenshan Zhan
    • Zhongming ZengXiufeng HanJiafeng FengTianxing WangGuanxiang DuFeifei LiWenshan Zhan
    • H01L29/06H01L27/082
    • H01L29/66984B82Y10/00H01L29/7376
    • The present invention relates to a transistor based on resonant tunneling effect of double barrier tunneling junctions comprising: a substrate, an emitter, a base, a collector and a first and a second tunneling barrier layers; wherein the first tunneling barrier layer is located between the emitter and the base, and the second tunneling barrier layer is located between the base and the collector; furthermore, the junction areas of the tunneling junctions which are formed between the emitter and the base and between the base and collector respectively are 1 μm2˜10000 μm2; the thickness of the base is comparable to the electron mean free path of material in the layer; the magnetization orientation is unbounded in one and only one pole of said emitter, base and collector. Because the double-barrier structure is used, it overcomes the Schottky potential between the base and the collector. Wherein the base current is a modulating signal, the collector signal is modulated to be similar to the base current's modulating mode by changing the magnetization orientation of the base or the collector, i.e., the resonant tunneling effect occurs. An amplified signal can be obtained under the suitable conditions.
    • 本发明涉及一种基于双阻挡隧道结的谐振隧道效应的晶体管,包括:衬底,发射极,基极,集电极和第一和第二隧道势垒层; 其中所述第一隧道势垒层位于所述发射极和所述基极之间,并且所述第二隧穿势垒层位于所述基极和所述集电极之间; 此外,形成在发射极和基极之间以及基极和集电极之间的隧道结的接合面分别为1μm2〜10000μm2。 基底的厚度与层中材料的电子平均自由程相当; 磁化方向在所述发射极,基极和集电极的一个且仅一个极中是无界的。 因为使用双重阻挡结构,它克服了基极和集电极之间的肖特基电位。 其中基极电流是调制信号,通过改变基极或集电极的磁化取向,即发生谐振隧穿效应,将集电极信号调制成与基极电流的调制模式相似。 在合适的条件下可以获得放大的信号。
    • 2. 发明申请
    • Core Composite Film for a Magnetic/Nonmagnetic/Magnetic Multilayer Thin Film and Its Useage
    • 用于磁/非磁/磁多层薄膜的芯复合膜及其应用
    • US20090011284A1
    • 2009-01-08
    • US11909553
    • 2006-03-24
    • Tianxing WangZhongming ZengGuanxiang DuXiufeng HanZhenmin HongGauquan Shi
    • Tianxing WangZhongming ZengGuanxiang DuXiufeng HanZhenmin HongGauquan Shi
    • G11B5/706
    • B82Y25/00G11B5/3909G11B2005/3996H01F10/005H01F10/3268
    • The present invention relates to a core composite film for magnetic/nonmagnetic/magnetic multilayer thin film comprising a free magnetic layer, a spacer layer and a pinned magnetic layer. As the core composite film, it may be only the spacer layer is an LB film; and the spacer layer is an organic LB film consisting of materials with insulative, conductive or semiconductive character. As the core composite film, it may also be said free magnetic layer, spacer layer and pinned magnetic layer are all LB films; wherein the pinned magnetic layer and the free magnetic layer are organic films made of magnetic materials. The core composite film can be applied to a magnetic spin valve sensor, which can compose a magnetic induction unit of a magnetic spin valve sensor; and it can also be applied to a magnetic random access memory as a memory cell. Uniformity and consistency can be kept over large areas for the core composite film, and the process thereof is simple and the cost is low; moreover, by use of an LB organic film substituting for conventional spacer layer and magnetic layer, devices are made lighter, thinner, easier to be processed to and integrated.
    • 本发明涉及一种包含自由磁性层,间隔层和钉扎磁性层的磁/非磁/多层薄膜的芯复合膜。 作为芯复合膜,可以仅间隔层为LB膜; 并且间隔层是由具有绝缘性,导电性或半导体特性的材料构成的有机LB膜。 作为芯复合膜,也可以是自由磁性层,间隔层和固定磁性层都是LB膜; 其中被钉扎的磁性层和自由磁性层是由磁性材料制成的有机膜。 核心复合膜可以应用于磁性自旋阀传感器,其可以组成磁性自旋阀传感器的磁感应单元; 并且也可以应用于作为存储单元的磁性随机存取存储器。 核心复合膜可以在大面积上保持均匀性和一致性,其工艺简单,成本低; 此外,通过使用代替常规间隔层和磁性层的LB有机膜,使得器件更轻,更薄,更易于加工和集成。
    • 10. 发明申请
    • MAGNETIC NANO-MULTILAYERS FOR MAGNETIC SENSORS AND MANUFACTURING METHOD THEREOF
    • 用于磁传感器的磁性纳米多层及其制造方法
    • US20130099780A1
    • 2013-04-25
    • US13701474
    • 2011-03-04
    • Qinli MaHoufang LiuXiufeng Han
    • Qinli MaHoufang LiuXiufeng Han
    • G01R33/02
    • G01R33/02B82Y10/00B82Y25/00G01R33/093G01R33/098G11B5/3906G11B5/3909G11B2005/3996G11C11/16G11C11/161H01L21/00H01L43/08H01L2221/00H01L2223/00Y10S977/70
    • The invention discloses a magnetic nano-multilayers structure and the method for making it. The multilayer film includes—sequentially from one end to the other end—a substrate, a bottom layer, a magnetic reference layer, a space layer, a magnetic detecting layer and a cap layer. The, up-stated structure is for convert the information of the rotation of the magnetic moment of the magnetic detecting layer into electrical signals. The magnetic detecting layer is of a pinning structure to react to the magnetic field under detection. On the other hand, the invention sandwiches an intervening layer between the AFM and the FM to mitigate the pinning effect from the exchange bias. Moreover, the thickness of the intervening layer is adjustable to control the pinning effect from the exchange bias. The controllability ensures that the magnetic moments of the magnetic reference layer and the magnetic detecting layer remain at right angles to each other when the external field is zero. The invention achieves a GMR or TMR magnetic sensor exhibiting a linear response and by tuning the thickness of the non-magnetic metallic layer, the sensitivity as well as the detecting range of the devices can be tuned easily.
    • 本发明公开了一种磁性纳米多层结构及其制造方法。 多层膜从一端到另一端依次包括基板,底层,磁性基准层,空间层,磁性检测层和盖层。 上述结构用于将磁检测层的磁矩的旋转信息转换为电信号。 磁检测层具有与被检测的磁场反应的钉扎结构。 另一方面,本发明在AFM和FM之间夹着中间层,以减轻交换偏压的钉扎效应。 此外,中间层的厚度是可调节的,以控制交换偏压的钉扎效应。 当外场为零时,可控性确保磁参考层和磁检测层的磁矩保持彼此成直角。 本发明实现了具有线性响应的GMR或TMR磁传感器,并且通过调谐非磁性金属层的厚度,可以容易地调节灵敏度以及器件的检测范围。