| 摘要 |
PROBLEM TO BE SOLVED: To provide a GMR element capable of fully stabilizing a GMR laminated film magnetically, reading information with more sensitivity, and suppressing electro-migration. SOLUTION: A CPP type GMR element 1A comprises a GMR laminated film comprising a ferroelectric film, a non-magnetic film, and an antiferromagnetic film. Related to the GMR element, a sensing current Is flows in the direction vertical to the film surface of a GMR laminated film 2 thanks to an upper-part electrode 14 and a lower-part electrode 12. A hard magnetic film 3 is jointed directly, to both outsides in widthwise direction of the GMR laminated film 2. An insulation layer 4 is formed above or below the hard magnetic film 3. An opening between the insulation layers 4 on both sides regulates the path of the sensing current Is, between the upper-part electrode 14 or lower-part electrode 12 and the GMR laminated film 2. A high resistance film 31 is inserted in the hard magnetic film 3, which suppresses or prevents shunting of the sensing current Is into the hard magnetic film 3.
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