Magnetic head 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 pole and the first magnetic layer,
• a third magnetic layer provided between the first magnetic pole and the second magnetic layer,
• a first nonmagnetic layer provided between the first magnetic layer and the second magnetic pole,
• a second nonmagnetic layer provided between the second magnetic layer and the first magnetic layer, and
• a third nonmagnetic layer provided between the third magnetic layer and the second magnetic layer,
• the first magnetic layer including (Fe100-xCox)100-yEy (10 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,
• the second magnetic layer including at least one of Fe, Co, or Ni, the second magnetic later of including the second element, or a concentration of the second element in the second magnetic layer being less than a concentration of the second element in the first magnetic layer,
• the third magnetic layer including (Fe100-xCox)100-yEXy (10 atomic %≤x≤50 atomic %, 10 atomic %≤y≤90 atomic %), a fourth element EX including at least one selected from the group consisting of Cr, V, Mn, Ti and Sc,
• the second magnetic layer not including the fourth element, or a concentration of the fourth element in the second magnetic layer being less than a concentration of the fourth element in the third magnetic layer,
• the first nonmagnetic layer including at least one selected from the group consisting of Cu, Ag, Au, Al, and Cr,
• the second nonmagnetic layer including at least one selected from the group consisting of Cu, Ag, Au, Al, and Cr, and
• the third nonmagnetic layer including at least one selected from the group consisting of Cu, Ag, Au, Al, and Cr.