| 摘要 |
PROBLEM TO BE SOLVED: To reduce erroneous writing and improve thermal stability. SOLUTION: This magnetoresistive effect element 10 comprises a fixing layer 11 fixed in its direction of magnetization, a recording layer 13 variable in its direction of magnetization, and a non-magnetic layer 12 provided between the fixing layer 11 and the recording layer 13. The thickness T of the recording layer 13 is 5 nm to 20 nm, and the recording layer 13 includes an extending part 10a extended in a first direction, and a projected part 10b projected in a second direction perpendicular to the first direction from the side surface of the extending part 10a. When a maximum length in the first direction of the recording layer 13 is specified as a first length L and a maximum length in the second direction of the recording layer 13 is specified as a second length W, a ratio of the first length L and the second length W is 1.5 to 2.2. COPYRIGHT: (C)2006,JPO&NCIPI
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