Magnetic head, method of manufacturing magnetic head, actuator, and magnetic disk device

A method of manufacturing a magnetic head, comprising:

• forming a first insulator comprising a first insulating material around a writer of a magnetic head as a surface layer of a floating surface;
• forming a second insulator comprising a second insulating material with lower rigidity than rigidity of the first insulating material near the first insulator around the writer beneath the surface layer of the floating surface;
• and
• polishing the first insulator on the floating surface.

A magnetic disk device comprising:

• a spindle;
• at least one magnetic disk configured to spin supported by the spindle;
• and
• an actuator configured to support a magnetic head slider comprising a magnetic head and to move in a radial direction of the magnetic disk supported by the spindle, wherein
• the magnetic head comprises
• a writer,
• a first insulator around the writer as a surface layer of a floating surface, the first insulator comprising a first insulating material, and
• a second insulator near the first insulator around the writer and beneath the surface layer of the floating surface, the second insulator comprising a second insulating material with lower rigidity than rigidity of the first insulating material, and
• a portion of the floating surface comprising the second insulator is higher than a portion of the floating surface comprising the first insulator around the writer.