Magnetic head including multiple magnetic layers and magnetic recording device

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.