发明名称 |
Magnetic head having a magnetoresistive element and highly polarized spin injection layer |
摘要 |
A magnetic head is provided with a giant magnetoresistive element, barrier layer, and highly polarized spin injection layer. The barrier layer is inserted between the giant magnetoresistive element and the injection layer. By applying a sensing current to both the magnetoresistive element and the injection layer, an output of the magnetic head can be multiplied significantly. The output of the head is increased by increasing a resistance change rate of a magnetoresistive element used as a reading element. The increasing of the resistance change rate is due to that a band of s electrons in the Cu film grown in the highly polarized spin injection layer is placed in a highly polarized state near the Fermi level and the upward spin current only flows into the giant magnetoresistive element, which has multiplied the output.
|
申请公布号 |
US7378699(B2) |
申请公布日期 |
2008.05.27 |
申请号 |
US20050319392 |
申请日期 |
2005.12.29 |
申请人 |
HITACHI GLOBAL STORAGE TECHNOLOGIES JAPAN, LTD. |
发明人 |
HAYAKAWA JUN |
分类号 |
G11C11/15;H01L27/14;G11B5/31;G11B5/39;G11C11/16;H01F10/32;H01L21/8246;H01L27/105;H01L43/08 |
主分类号 |
G11C11/15 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|