{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11508405","patent":{"patent_number":"US-11508405","title":"Magnetic recording media with plasma-polished pre-seed layer or substrate","assignee":null,"inventors":[],"filing_date":"2021-06-21T00:00:00.000Z","publication_date":"2022-11-22T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B","G11B"],"num_claims":24,"abstract":"Magnetic recording media including a soft magnetic underlayer (SUL) formed over a plasma-polished substrate or pre-seed layer. In some examples, the substrate or pre-seed layer is plasma-polished using an inert gas such as krypton so that the roughness of the surface on which the SUL is deposited is reduced. The roughness reduction can lead to improved crystallographic texture within subsequently deposited media films, and consequently, to increased recording performance of the media. In particular, media signal-to-noise ratio (SNR), linear recording density, and areal recording density or areal density capacity (ADC) can be improved. In one aspect, a carbon deposition/etching apparatus may be modified to polish the substrate or pre-seed layer with krypton or other inert gases, rather than be used to deposit carbon overcoat."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Magnetic recording media with plasma-polished pre-seed layer or substrate","description":"Magnetic recording media including a soft magnetic underlayer (SUL) formed over a plasma-polished substrate or pre-seed layer. In some examples, the substrate or pre-seed layer is plasma-polished usin","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11508405","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-11508405","citation_suggestion":"Patentable. \"Magnetic recording media with plasma-polished pre-seed layer or substrate\" (US-11508405). https://patentable.app/patents/US-11508405","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11508405","json":"https://patentable.app/api/llm-context/US-11508405","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T19:08:05.749Z"}