Thin film magnetic head with improved flux concentration for high density recording/playback utilizing superconductors
This patent describes a thin film magnetic head for use with a magnetic medium. It comprises a core including a first and a second deposited layer of ferromagnetic material, each layer having a pole portion, each pole portion lying in a plane generally parallel to the other and generally perpendicular to a direction of motion of the recording medium, the pole portions being separated by a gap; a conductor, electromagnetically coupled to the core; a layer of superconductor material located between the pole portions in the gap for excluding magnetic flux from the gap; a first layer of superconductor shield material provided on a face of the pole portion of the first layer of ferromagnetic material opposite the gap; and a second layer of superconductor shield material provided on a face of the pole portion of the second layer of ferromagnetic material opposite the gap.
- Assignee:
- Ampex Corp., Redwood City, CA (United States)
- Patent Number(s):
- US 5075280; A
- Application Number:
- PPN: US 7-265620
- OSTI ID:
- 5257983
- Resource Relation:
- Patent File Date: 1 Nov 1988
- Country of Publication:
- United States
- Language:
- English
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