Helical coils design and process for dual writer magnetic recording

A magnetic recording head, comprising:

• a first write head, comprising:
• a first main pole;
• a first yoke coupled to the first main pole, the first yoke having a first length;
• and
• a first coil wrapped around the first yoke, the first coil having a second length;
• and
• a second write head disposed adjacent to the first write head, comprising:
• a second main pole;
• a second yoke coupled to the second main pole, the second yoke having a third length less than the first length of the first yoke;
• and
• a second coil, the second coil having a fourth length less than the second length of the first coil, wherein the first coil wraps around the first yoke a greater number of times than the second coil wraps around the second yoke.

A magnetic recording head, comprising:

• one or more read heads;
• a first write head comprising means for increasing a bits per inch capability of the magnetic recording head and means for increasing a write field;
• and
• a second write head disposed adjacent to the first write head, the second write head comprising means for increasing a tracks per inch capability of the magnetic recording head and means for increasing a data rate capability, wherein the first write head has a higher bit per inch capability and a greater write field than the second write head, and wherein the second write head has a higher tracks per inch capability and a higher data rate capability than the first write head.

A magnetic recording head, comprising:

• a first write head, comprising:
• a first main pole;
• a first yoke coupled to the first main pole;
• and
• a first coil wrapped around the first yoke, wherein each wrap of the first coil comprises first portions comprised of a first material and second portions comprised of a second material different than the first material;
• and
• a second write head disposed adjacent to the first write head, comprising:
• a second main pole;
• a second yoke coupled to the second main pole;
• and
• a second coil wrapped around the second yoke, wherein each wrap of the second coil comprises first portions comprised of the first material and second portions comprised of the second material;
• wherein:
• the first yoke and the second yoke each have a rectangular shape and comprise a first surface, a second surface parallel to the first surface, a third surface, and a fourth surface parallel to the third surface, the first and second surfaces having a greater length than the third and fourth surfaces;
• the first portions of the first coil are disposed directly adjacent to the third and fourth surfaces of the first yoke and the second portions of the first coil are disposed directly adjacent to the first and second surfaces of the first yoke;
• and
• the first portions of the second coil are disposed directly adjacent to the third and fourth surfaces of the second yoke and the second portions of the second coil are disposed directly adjacent to the first and second surfaces of the second yoke.