{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10522178","patent":{"patent_number":"US-10522178","title":"High damping shield with low magnetic moment in perpendicular magnetic recording (PMR) writer","assignee":null,"inventors":[],"filing_date":"2018-08-24T00:00:00.000Z","publication_date":"2019-12-31T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B","G11B","G11B","G11B"],"num_claims":13,"abstract":"A PMR writer is disclosed with an all wrap around (AWA) shield design in which one or more of the leading shield, lead edge taper (LET), and side shields are comprised of a low moment high damping (LMHD) magnetic material having a damping constant ≥0.04 and a magnetic flux density (Bs) from 1 kilogauss (kG) to 8 kG. The LMHD magnetic material may be FeNiM, FeCoM, FeNM, or FeCoNiM where M is a 3d, 4d, or 5d transition metal. The LET layer has a tapered side adjoining the leading gap and with a thickness that decreases to zero at height h1 of 50 nm to 500 nm from the air bearing surface. The leading shield also has a backside at h1. Wide adjacent track erasure is minimized while area density capability is enhanced compared with conventional shields with Bs from 10-19 kG."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"High damping shield with low magnetic moment in perpendicular magnetic recording (PMR) writer","description":"A PMR writer is disclosed with an all wrap around (AWA) shield design in which one or more of the leading shield, lead edge taper (LET), and side shields are comprised of a low moment high damping (LM","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10522178","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-10522178","citation_suggestion":"Patentable. \"High damping shield with low magnetic moment in perpendicular magnetic recording (PMR) writer\" (US-10522178). https://patentable.app/patents/US-10522178","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10522178","json":"https://patentable.app/api/llm-context/US-10522178","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T14:46:26.643Z"}