Technique for reducing pole tip protrusion in a magnetic write head and GMR stripe temperature in an associated read head structure utilizing one or more internal diffuser regions

A write head comprising:

• a coil;
• a first pole in an underlying relationship to said coil;
• a second pole in an overlying relationship to said coil;
• and
• at least one relatively high thermal conductivity diffuser region in an overlying relationship to said coil and said second pole, wherein said at least one relatively high thermal conductivity diffuser region comprises an electrically conductive material and wherein said at least one relatively high thermal conductivity diffuser region is spaced apart in said write head from both said coil and said second pole.

A write head comprising:

• a coil;
• a first pole in an underlying relationship to said coil;
• a second pole in an overlying relationship to said coil;
• a midcoat layer interposed between said coil and said first pole;
• and
• at least one relatively high thermal conductivity diffuser region interposed between said midcoat layer and extending through said first pole, wherein said at least one relatively high thermal conductivity diffuser region comprises an electrically conductive material;
• and a write gap laver interposed between said coil and said at least one relatively high thermal conductivity diffuser region, whereby said at least one relatively high thermal conductivity diffuser region is not in contact with said coil.