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Co-Zn ferrite rigid disks prepared by plasma-free sputtering at low substrate temperature

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4 Author(s)
Matsushita, N. ; Dept. of Phys. Electron., Tokyo Inst. of Technol., Japan ; Noma, K. ; Nakagawa, S. ; Naoe, M.

Co-Zn ferrite films deposited at substate temperature Tc below 200°C and above 400°C by using facing targets sputtering apparatus are composed of crystallites with (111) and (311) orientation, respectively. A maximum 4πMs of 4.8 kG was obtained at Ts of 250°C and then Hc was about 1.5 kOe. The linear recording density of 31 kFRPL was obtained and it is the highest value to be reported for ferrite disk media compared to previous studies using a ring type head

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Magnetics, IEEE Transactions on  (Volume:31 ,  Issue: 6 )