{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9589582","patent":{"patent_number":"US-9589582","title":"High moment side shield design for area density improvement of perpendicular magnetic recording (PMR) writer","assignee":null,"inventors":[],"filing_date":"2016-05-23T00:00:00.000Z","publication_date":"2017-03-07T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B"],"num_claims":13,"abstract":"A PMR writer is disclosed wherein a hot seed layer (HS) made of a 19-24 kilogauss (kG) magnetic material is formed between a gap layer and a 10-16 kG magnetic layer in the side shields, and between the leading gap and a 16-19 kG magnetic layer in the leading shield to improve the track field gradient and cross-track field gradient while maintaining write-ability. The HS is from 10 to 100 nm thick and has a first side facing the write pole with a height of ≦0.15 micron, and a second side facing a main pole flared side that may extend to a full side shield height of ≦0.5 micron. The trailing shield has a second hot seed layer on the write gap and a 16-19 kG magnetic layer that contacts the 10-16 kG side shield magnetic layer thereby forming an all wrap around (AWA) shield configuration."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"High moment side shield design for area density improvement of perpendicular magnetic recording (PMR) writer","description":"A PMR writer is disclosed wherein a hot seed layer (HS) made of a 19-24 kilogauss (kG) magnetic material is formed between a gap layer and a 10-16 kG magnetic layer in the side shields, and between th","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9589582","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-9589582","citation_suggestion":"Patentable. \"High moment side shield design for area density improvement of perpendicular magnetic recording (PMR) writer\" (US-9589582). https://patentable.app/patents/US-9589582","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9589582","json":"https://patentable.app/api/llm-context/US-9589582","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:05:54.497Z"}