CPC G11B 5/3146 (2013.01) [G11B 5/1278 (2013.01); G11B 5/235 (2013.01); G11B 5/314 (2013.01); G11B 2005/0024 (2013.01); G11B 5/027 (2013.01); G11B 2220/2516 (2013.01)] | 13 Claims |
1. A magnetic head, comprising:
a first magnetic pole;
a second magnetic pole; and
a magnetic element provided between the first magnetic pole and the second magnetic pole,
the magnetic element 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 fourth magnetic layer provided between the third magnetic layer and the second magnetic pole,
a fifth magnetic layer provided between the fourth magnetic layer and the second magnetic pole,
a first non-magnetic layer provided between the first magnetic pole and the first magnetic layer,
a second non-magnetic layer provided between the first magnetic layer and the second magnetic layer,
a third non-magnetic layer provided between the second magnetic layer and the third magnetic layer,
a fourth non-magnetic layer provided between the third magnetic layer and the fourth magnetic layer,
a fifth non-magnetic layer provided between the fourth magnetic layer and the fifth magnetic layer,
a sixth non-magnetic layer provided between the fifth magnetic layer and the second magnetic pole,
the fifth magnetic layer including a first element and at least one of Fe, Co or Ni, the first element including at least one selected from the group consisting of Cr, V, Mn, Ti, N and Sc,
the fifth non-magnetic layer including at least one selected from the group consisting of Ru, Ir, Ta, Rh, Pd, Pt and W, and
the sixth non-magnetic layer including at least one selected from the group consisting of Cu, Au, Cr, Al, V and Ag,
wherein the first magnetic layer, the second magnetic layer, the third magnetic layer and the fourth magnetic layer include at least one of Fe, Co or Ni,
wherein the first magnetic layer, the second magnetic layer, the third magnetic layer, and the fourth magnetic layer do not include the first element, or a concentration of the first element in the first magnetic layer, the second magnetic layer, the third magnetic layer, and the fourth magnetic layer is lower than a concentration of the first element in the fifth magnetic layer, and
wherein the fifth non-magnetic layer contacts the fifth magnetic layer, and the sixth non-magnetic layer contacts the fifth magnetic layer and the second magnetic pole.
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