{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8477453","patent":{"patent_number":"US-8477453","title":"Perpendicular magnetic recording write head with milling defined track width","assignee":null,"inventors":[],"filing_date":"2010-05-05T00:00:00.000Z","publication_date":"2013-07-02T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B","G11B","G11B","G11B"],"num_claims":6,"abstract":"A main pole layer having at least a leading taper and trimmed pole tip portion is described. The leading taper increases head field up to ≧15000 Oe even for narrow track widths approaching 50 nm. For MAMR applications, a STO and trailing shield are sequentially formed on a trailing pole tip side. Furthermore, full side shields may be added to reduce fringing field. Another embodiment involves including both of a leading taper and trailing taper at the pole tip where leading taper angle is between 20° and 60° and trailing taper angle is from 10° to 45°. A method is provided for forming various embodiments of the present invention. A key feature is that milling depth at an effective neck height distance is greater than or equal to the pole tip thickness. A self aligned STO may be formed by the same ion milling step that defines track width."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Perpendicular magnetic recording write head with milling defined track width","description":"A main pole layer having at least a leading taper and trimmed pole tip portion is described. The leading taper increases head field up to ≧15000 Oe even for narrow track widths approaching 50 nm. For ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8477453","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-8477453","citation_suggestion":"Patentable. \"Perpendicular magnetic recording write head with milling defined track width\" (US-8477453). https://patentable.app/patents/US-8477453","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8477453","json":"https://patentable.app/api/llm-context/US-8477453","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T19:14:15.010Z"}