{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9799357","patent":{"patent_number":"US-9799357","title":"Magnetic reader sensor with shield spacing improvement and better pin flop robustness","assignee":null,"inventors":[],"filing_date":"2016-11-08T00:00:00.000Z","publication_date":"2017-10-24T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B"],"num_claims":17,"abstract":"A MR sensor is disclosed with an antiferromagnetic (AFM) layer recessed behind a bottom shield to reduce reader shield spacing and improve pin related noise. Above the AFM layer is an AP2/AFM coupling layer/AP1 stack that extends from an air bearing surface to the MR sensor backside. The AP2 layer is pinned by the AFM layer, and the AP1 layer serves as a reference layer to an overlying free layer during a read operation. The AP1 and AP2 layers have improved resistance to magnetization flipping because back portions thereof have a full cross-track width “w” between MR sensor sides thereby enabling greater pinning strength from the AFM layer. Front portions of the AP1/AP2 layers lie under the free layer and have a track width less than “w”. The bottom shield may have an anti-ferromagnetic coupling structure. A process flow is provided for fabricating the MR sensor."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Magnetic reader sensor with shield spacing improvement and better pin flop robustness","description":"A MR sensor is disclosed with an antiferromagnetic (AFM) layer recessed behind a bottom shield to reduce reader shield spacing and improve pin related noise. Above the AFM layer is an AP2/AFM coupling","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9799357","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-9799357","citation_suggestion":"Patentable. \"Magnetic reader sensor with shield spacing improvement and better pin flop robustness\" (US-9799357). https://patentable.app/patents/US-9799357","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9799357","json":"https://patentable.app/api/llm-context/US-9799357","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:29:06.755Z"}