CPC G11B 5/235 (2013.01) [G11B 5/1278 (2013.01); G11B 5/31 (2013.01); G11B 5/314 (2013.01); G11B 5/3146 (2013.01); G11B 5/2455 (2013.01); G11B 2005/0024 (2013.01)] | 18 Claims |
1. A magnetic head, comprising:
a first magnetic pole;
a second magnetic pole; and
a stacked body provided between the first magnetic pole and the second magnetic pole,
the stacked body including
a first magnetic layer,
a second magnetic layer provided between the first magnetic layer and the second magnetic pole,
a third magnetic layer provided between the second magnetic layer and the second magnetic pole,
a first non-magnetic layer provided between the first magnetic layer and the second magnetic layer,
a second non-magnetic layer provided between the second magnetic layer and the third magnetic layer,
a third non-magnetic layer provided between the first magnetic pole and the first magnetic layer, and
a fourth non-magnetic layer provided between the third magnetic layer and the second magnetic pole,
the fourth non-magnetic layer including at least one selected from the group consisting of Cu, Au, Al, V and Ag,
the third magnetic layer including (F100-xCox)100-yEy (TO atomic %≤x≤50 atomic %, 10 atomic %≤y≤90 atomic %), a second element E including at least one selected from the group consisting of Cr, V, Mn, Ti and Sc,
a first magnetic pole length of the first magnetic pole along a second direction being shorter than a second magnetic pole length of the second magnetic pole along the second direction, the second direction being perpendicular to a first direction from the first magnetic layer to the second magnetic layer, and being along a medium-facing surface of the first magnetic pole, and
a first magnetic layer length of the first magnetic layer along a third direction being longer than a second magnetic layer length of the second magnetic layer along the third direction, the third direction being perpendicular to the first direction.
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