Magnetic sensor with extended pinned layer and partial wrap around shield

A magnetic read head, comprising:

• a sensor stack that includes a magnetic free layer structure and a magnetic pinned layer structure, the magnetic free layer structure having a back edge that extends from an air bearing surface to a first stripe height and having first and second laterally opposed sides the distance between which defines a track-width, and wherein the magnetic pinned layer structure has a back edge that extends significantly beyond the first stripe height and also extends laterally significantly beyond the first and second sides of the magnetic free layer;
• and
• first and second soft magnetic bias structures extending laterally outward from the first and second sides of the free layer structure;
• wherein at least a portion of each of the first and second soft magnetic bias structures is magnetically anti-parallel coupled with the trailing magnetic shield.

A magnetic data storage system, comprising:

• a housing;
• a magnetic media mounted within the housing;
• an actuator mounted within the housing;
• a slider connected with the actuator for movement adjacent to a surface of the magnetic media;
• and
• a magnetic read head formed on the slider, the magnetic read hear further comprising:
• a sensor stack that includes a magnetic free layer structure and a magnetic pinned layer structure, the magnetic free layer structure having a back edge that extends from an air bearing surface to a first stripe height and having first and second laterally opposed sides the distance between which defines a track-width, and wherein the magnetic pinned layer structure has a back edge that extends significantly beyond the first stripe height and also extends laterally significantly beyond the first and second sides of the free layer;
• first and second soft magnetic bias structures extending laterally outward from the first and second sides of the free layer structure;
• and
• a leading magnetic shield and a trailing magnetic shield, the sensor stack being sandwiched between the leading magnetic shield and the trailing magnetic shield;
• wherein:
• at least a portion of the first and second soft magnetic bias structures is located between the magnetic pinned layer structure and the trailing magnetic shield;
• and
• each of the first and second soft magnetic bias structures is magnetically coupled with the trailing magnetic shield.

A magnetic data storage system, comprising:

• a housing;
• a magnetic media mounted within the housing;
• an actuator mounted within the housing;
• a slider connected with the actuator for movement adjacent to a surface of the magnetic media;
• and
• a magnetic read head formed on the slider, the magnetic read hear further comprising:
• a sensor stack that includes a magnetic free layer structure and a magnetic pinned layer structure, the magnetic free layer structure having a back edge that extends from an air bearing surface to a first stripe height and having first and second laterally opposed sides the distance between which defines a track-width, and wherein the magnetic pinned layer structure has a back edge that extends significantly beyond the first stripe height and also extends laterally significantly beyond the first and second sides of the free layer;
• first and second soft magnetic bias structures extending laterally outward from the first and second sides of the free layer structure;
• and
• a leading magnetic shield and a trailing magnetic shield, the sensor stack being sandwiched between the leading magnetic shield and the trailing magnetic shield;
• wherein:
• wherein at least a portion of each of the soft magnetic bias structures is magnetically anti-parallel coupled with the trailing magnetic shield.