{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8509039","patent":{"patent_number":"US-8509039","title":"Thermally-assisted recording (TAR) disk with low thermal-conductivity underlayer","assignee":null,"inventors":[],"filing_date":"2012-06-28T00:00:00.000Z","publication_date":"2013-08-13T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B","G11B"],"num_claims":20,"abstract":"A thermally-assisted recording (TAR) disk has an improved insulating layer beneath the chemically-ordered FePt (or CoPt) alloy recording layer. The insulating layer is a solid substitution crystalline alloy MgXO, where the element X is selected from nickel (Ni) and cobalt (Co). The composition of the MgXO crystalline solid substitutional alloy is of the form (Mg(100-y)Xy)O where y is between 10 and 90, and more preferably between 20 and 80. An optional layer of crystalline “pure” MgO may be located between the MgXO layer and the FePt recording layer and in contact with the recording layer, or between an underlayer and the MgXO layer."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Thermally-assisted recording (TAR) disk with low thermal-conductivity underlayer","description":"A thermally-assisted recording (TAR) disk has an improved insulating layer beneath the chemically-ordered FePt (or CoPt) alloy recording layer. The insulating layer is a solid substitution crystalline","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8509039","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-8509039","citation_suggestion":"Patentable. \"Thermally-assisted recording (TAR) disk with low thermal-conductivity underlayer\" (US-8509039). https://patentable.app/patents/US-8509039","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8509039","json":"https://patentable.app/api/llm-context/US-8509039","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T02:19:36.394Z"}