Recording tapes using iron nitride fine powder

@inproceedings{Tasaki1981RecordingTU,
  title={Recording tapes using iron nitride fine powder},
  author={Akira Tasaki and Kimiteru Tagawa and Eiji Kita and Shoichiro Harada and Tomohiro Kusunose},
  year={1981}
}
Magnetic recording pigment of Fe 4 N particles was prepared by nitrogenizing acicular metal iron powder. The treatment to obtain stoichiometric Fe 4 N was carried out at 400°C for 3 hours in NH 3 -H 2 (3:1) mixed gas. The saturation magnetization and coercive force were 120 emu/g and 700 Oe respectively. The Curie point of the powder coincided well with that of bulk material. Test tapes were prepared with this Fe 4 N powder. The remanent magnetic flux density (Br) of the tape was 2200 G and the… CONTINUE READING

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Magnetic thin films for spintronic applications

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Particulate recording materials