{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8531801","patent":{"patent_number":"US-8531801","title":"Method and system for providing a read transducer having a composite magnetic shield with smooth interfaces","assignee":null,"inventors":[],"filing_date":"2012-12-20T00:00:00.000Z","publication_date":"2013-09-10T00:00:00.000Z","cpc_codes":["G11B","B82Y","G11B","G11B"],"num_claims":19,"abstract":"A method and system provide a magnetic transducer including first and second shields, a read sensor, and magnetic bias structure(s) adjacent to the read sensor. The read sensor and magnetic bias structure(s) are between the shields. The second shield includes first and second ferromagnetic layers, a nonmagnetic spacer layer and a pinning layer. The nonmagnetic spacer layer is between the first and second ferromagnetic layers. The first ferromagnetic layer is between the read sensor and the nonmagnetic spacer layer. The pinning layer is adjacent to the second ferromagnetic layer. The first and second ferromagnetic layers are coupled antiparallel. The first ferromagnetic layer includes magnetic layers interleaved with trilayer(s). Each magnetic layer includes crystalline grains. The trilayer(s) include an amorphous nonmagnetic layer less than three Angstroms thick. Thus, the magnetic layers are ferromagnetically coupled but the crystalline grains in different magnetic layers are decoupled."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and system for providing a read transducer having a composite magnetic shield with smooth interfaces","description":"A method and system provide a magnetic transducer including first and second shields, a read sensor, and magnetic bias structure(s) adjacent to the read sensor. The read sensor and magnetic bias struc","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8531801","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8531801","citation_suggestion":"Patentable. \"Method and system for providing a read transducer having a composite magnetic shield with smooth interfaces\" (US-8531801). https://patentable.app/patents/US-8531801","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8531801","json":"https://patentable.app/api/llm-context/US-8531801","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T06:31:17.208Z"}