ALEXANDRIA, Va., March 19 -- United States Patent no. 12,254,907, issued on March 18, was assigned to SEAGATE TECHNOLOGY LLC (Fremont, Calif.).

"Dual layer graded curie temperature HAMR media" was invented by Thomas Young Chang (Singapore), Aneesh Venugopal (Edina, Minn.) and Philip Lisle Steiner (Los Altos, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus is configured to include a first magnetic layer, a second magnetic layer and a break layer between the first magnetic layer and the second magnetic layer. The first magnetic layer includes a Curie temperature gradient between a first surface and a second surface of the first magnetic layer. The second magnetic layer includes a Curie tempe...