Superconductor magnetic reading and writing heads

A head for interfacing with a magnetic recording media comprising:

• a member of magnetic material forming at least a portion of a magnetic flux circuit ending with a pole face surface in interfacing relation to the media for establishing a main pole in proximity to the media in said magnetic flux circuit,
• magnetically responsive means in magnetically coupled relation to said magnetic flux circuit,
• means encasing at least a portion of the external surfaces of said member with superconductive material except for the media interfacing portion of said pole face surface, said encasing means including superconducting material substantially surrounding said magnetic flux circuit in proximity to said pole face surface, and
• means establishing an environment for said superconductive material at a temperature for maintaining said superconductive material in its superconductive state,
• whereby magnetic flux in said magnetic flux circuit associated with said encasing means is concentrated within said magnetic flux circuit while placement of said pole face surface in proximity to the recording media permits sensitive magnetic flux controlled information exchanges between the media and said head.