Low frequency attenuator in a magnetic write head

A magnetic head for writing data to one or more disks, the magnetic head comprising:

• at least first and second pole pieces;
• a write gap between the first and the second pole pieces;
• the at least first and second pole pieces forming a flare angle greater than or equal to 45°;
• one or more magnetic shunting elements extending between the first and the second pole pieces;
• the one or more magnetic shunting elements including a magnetic shunting element having a length-to-width ratio of at least 2-to-1;
• the magnetic head being configured to write data at a high data rate during which a magnetic write flux is formed at the write gap and the one or more magnetic shunting elements shunt little if any magnetic write flux;
• and
• the magnetic head being configured to write data at a low data rate during which the one or more magnetic shunting elements shunt magnetic write flux excess so that a reduced magnetic write flux is formed at the write gap.

A magnetic recording apparatus, comprising:

• first and second pole pieces;
• a write gap formed between the first and second pole pieces;
• at least one magnetic shunting element extending between the first and second pole pieces which is magnetically in parallel with the write gap;
• magnetic coils coupling to the first and second pole pieces;
• a write driver coupled to the magnetic coils;
• the write driver configured to cause the magnetic head to write data at a maximum operating data rate where the magnetic coils are energized with a write current such that a magnetic flux is produced at the write gap and the at least one magnetic shunting element shunts little if any magnetic flux;
• and
• the write driver configured to cause the magnetic head to write data at other data rates less than the maximum operating data rate where the magnetic coils are energized with the write current such that the at least one magnetic shunting element shunts magnetic flux excess to produce a reduced magnetic flux at the write gap.