MASTER CARRIER FOR MAGNETIC TRANSFER AND MAGNETIC TRANSFER METHOD USING THE SAME

• Main Authors: NISHIDA YOICHI, KOMINE HIROSHI, NISHIKAWA SHOICHI, KUBOTA HIDEYUKI, SUGITA RYUJI
• Format: Patent
• Language: English
• Published: 02.07.2009
• Subjects: INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS

PROBLEM TO BE SOLVED: To provide a master carrier for magnetic transfer which is provided with a magnetic layer having high magnetic anisotropy energy and less influenced by a demagnetizing field caused by a transfer magnetic field and, in consequence, capable of performing favorable magnetic recording of signals having thin line thickness (less than 80 nm), and to provide a magnetic transfer method using the master carrier. SOLUTION: The master carrier for magnetic transfer provided on a perpendicular magnetic recording medium for transferring magnetic information to the magnetic recording medium under application of a magnetic field includes: a transfer part having a magnetic layer corresponding to magnetic information for magnetic transfer formed thereon; and a non-transfer part which has a concave shape which is relatively lower than the transfer part having the magnetic layer. The magnetic layer has a perpendicular magnetic anisotropy of an anisotropy energy higher than 4×106erg/cm3. COPYRIGHT: (C)2009,JPO&INPIT