30-10-2014 дата публикации
Номер: US20140318954A1
Принадлежит:
An FePt-based sputtering target has a structure in which an FePt-based alloy phase, a C phase containing unavoidable impurities, and a metal oxide phase containing unavoidable impurities are mutually dispersed, the FePt-based alloy phase containing Pt in an amount of 40 at % or more and 60 at % or less with the balance being Fe and unavoidable impurities, wherein C is contained in an amount of more than 0 vol % and 20 vol % or less based on the total amount of the target, the metal oxide is contained in an amount of 10 vol % or more and less than 40 vol % based on the total amount of the target, and the total content of C and the metal oxide is 20 vol % or more and 40 vol % or less based on the total amount of the target. 1. An FePt-based sputtering target comprising Fe , Pt , C , and a metal oxide ,wherein the FePt-based sputtering target has a structure in which an FePt-based alloy phase, a C phase containing unavoidable impurities, and a metal oxide phase containing unavoidable impurities are mutually dispersed, the FePt-based alloy phase containing Pt in an amount of 40 at % or more and 60 at % or less with the balance being Fe and unavoidable impurities, andwherein C is contained in an amount of more than 0 vol % and 20 vol % or less based on a total amount of the target, the metal oxide is contained in an amount of 10 vol % or more and less than 40 vol % based on the total amount of the target, and a total content of C and the metal oxide is 20 vol % or more and 40 vol % or less based on the total amount of the target.2. The FePt-based sputtering target according to claim 1 ,wherein a phase consisting of the C phase and the metal oxide phase has an average size of 0.4 μm or less as determined by an intercept method.31. The FePt-based sputtering target according to claim claim 1 ,{'sub': 2', '2', '2', '3', '2', '5', '2', '3', '3', '4', '2', '3', '2', '3', '2', '2', '3', '2', '3', '2', '2', '5', '3', '2', '2', '3', '2', '3', '2', '3', '2', '2, 'wherein the metal ...
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