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    • 7. 发明公开
    • 자기 메모리, 및 그 기록 방법
    • 用于执行写作操作的磁记录,特别是使用热电偶作为电流载体
    • KR1020040086592A
    • 2004-10-11
    • KR1020040020959
    • 2004-03-27
    • 가부시끼가이샤 도시바
    • 사또리에미즈시마고이찌
    • G11C11/15
    • G11C11/15G11C11/161H01L27/222H01L43/08
    • PURPOSE: A magnetic memory for performing a writing operation with small current without crosstalk and a writing method thereof are provided to increase efficiency of magnetization reversal due to spin injection by using thermoelectrons as current carriers instead of conventional conduction electrons. CONSTITUTION: A magnetic memory includes a spin polarization unit, a thermoelectron generation unit, and a magnetic layer. The spin polarization unit(S) is used for spin-polarizing electrons to form a writing current(I). The thermoelectron generation unit(H) is used for converting the electrons into thermoelectrons. The magnetic layer(F) is used for reversing magnetization by the thermoelectrons. A predetermined voltage is applied to the thermoelectron generation unit in order to obtain a nonlinear response characteristic of electric current flowing.
    • 目的:提供用于执行小电流而没有串扰的写入操作的磁存储器及其写入方法,以通过使用热电子作为电流载流子而不是传统的传导电子来提高由于自旋注入引起的磁化反转的效率。 构成:磁存储器包括自旋极化单元,热电子产生单元和磁性层。 自旋极化单元(S)用于自旋极化电子以形成写入电流(I)。 热电子产生单元(H)用于将电子转换成热电子。 磁性层(F)用于通过热电子反转磁化。 为了获得电流流动的非线性响应特性,向热电子产生单元施加预定的电压。
    • 8. 发明公开
    • 스핀 터널 트랜지스터 및 자기 재생 헤드
    • 旋转隧道晶体管,磁性复制头,磁信息再现系统和磁存储器件
    • KR1020040026623A
    • 2004-03-31
    • KR1020030065776
    • 2003-09-23
    • 가부시끼가이샤 도시바
    • 사또리에미즈시마고이찌
    • G11C11/15
    • B82Y25/00B82Y10/00G01R33/06G11B5/332G11B5/3919G11B2005/3996H01F10/3268H01L29/66984H01L43/08
    • PURPOSE: To provide a spin tunnel transistor that can avoid the decreases of its collector current and MR ratio and can be put appropriately to practical use. CONSTITUTION: This spin tunnel transistor is provided with an emitter, a collector, and a base. The base is provided with a first magnetic layer formed on the emitter side, a second magnetic layer formed on the collector side, and a nonmagnetic layer formed between the first and the second magnetic layers. An antiferromagnetic tunnel barrier layer bonded to the adjoining first or second magnetic layer with exchange coupling is provided between the first magnetic layer and emitter or the collector and second magnetic layer. When the magnetization of the magnetic layers are fixed by bonding the antiferromagnetic tunnel barrier layer and magnetic layers to each other with exchange coupling the spin conduction of hot electrons can be maintained in the base, and the decreases of the collector current and MR ration can be avoided.
    • 目的:提供一种能够避免集电极电流和MR比降低的自旋隧道晶体管,可以适当地适用于实际应用。 构成:该自旋隧道晶体管设置有发射极,集电极和基极。 基底设置有形成在发射极侧的第一磁性层,在集电极侧形成的第二磁性层和形成在第一和第二磁性层之间的非磁性层。 在第一磁性层和发射体或集电体和第二磁性层之间设置结合到邻接的具有交换耦合的第一或第二磁性层的反铁磁隧道势垒层。 当通过交换耦合使反铁磁隧道势垒层和磁性层彼此接合来固定磁性层的磁化时,可以在基体中保持热电子的自旋传导,并且集电极电流和MR比率的降低可以是 避免。