Magnetic head and method for manufacturing the same, and magnetic recording and reading device and method for manufacturing the same

A magnetic head to be flown above a magnetic recording medium to record or read magnetic information, the magnetic head comprising:

• at least one element unit of a magnetic recording element unit or a magnetic reading element unit on an air bearing surface-side facing the magnetic recording medium when the magnetic head is flown;
• and a protective layer that protects the element unit,
• wherein the magnetic recording element unit includes a magnetic recording element, a magnetic recording element protrusion protruding from the magnetic recording element, and a magnetic recording element shield surrounding the magnetic recording element protrusion,
• the magnetic reading element unit includes a magnetic reading element, a magnetic reading element protrusion protruding from the magnetic reading element, and a magnetic reading element shield surrounding the magnetic reading element protrusion,
• the protective layer includes a first region on the magnetic recording element protrusion and a second region on the magnetic recording element shield when the element unit is the magnetic recording element unit, or includes a third region on the magnetic reading element protrusion and a fourth region on the magnetic reading element shield when the element unit is the magnetic reading element unit,
• the first region and the second region are flush with each other, or the first region is recessed more than the second region, and
• the third region and the fourth region are flush with each other, or the third region is recessed more than the fourth region.