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Microstructure and Magnetic Properties in Fe-Co-B/M Films for Soft Magnetic Underlayer of Perpendicular Magnetic Recording Media

수직자기기록매체용 Fe-Co-B/M 하지연자성층의 미세결정구조 및 자기특성

  • Published : 2004.08.01

Abstract

It is necessary to develop soft magnetic layer with high saturation magnetization 4 $\pi{M}_s$ and in-plane magnetic anisotropy field Hk for soft magnetic underlayer of perpendicular magnetic recording media with high signal to noise ratio. Fe-Co-B layer with high 4 $\pi$Ms of about 23 kG deposited on Ni-Fe and Ni-Fe/Si seedlayer exhibited very high in-plane magnetic anisotropy filed Hk of about 280 and 380 Oe, respectively, In-plane XRD studies clarified that the lattice spacing of planes along the easy axis direction was longer than that along the hard axis direction in the Fe-Co-B layers with high Hk. These results indicate that high Hk of Fe-Co-B/Ni-Fe and Fe-Co-B/[Ni-Fe/si] layers were resulted from magnetoelastic anisotropy owing to a residual stress. Moreover, the high Hk in the Fe-Co-B/Ni-Fe layer was maintained until 30$0^{\circ}C$ annealing temperature.

References

  1. J. Magn. Magn. Mat. v.232 Recording physics of perpendicular media : soft underlayers D.Litvinov;M.H.Kryder;S.Khizroev https://doi.org/10.1016/S0304-8853(01)00216-5
  2. J. Magn. Magn. Mat. v.235 MFM stucy of magnetic interaction between recording and soft magnetic layers Y. Honda;K. Tanahashi;Y. Hirayama;A. Kikukawa;M. Futamoto https://doi.org/10.1016/S0304-8853(01)00318-3
  3. J. Appl. Phys. v.93 Effect of anisotropy field of soft magnetic underlayer on read/write properties in perpendicular recording media Y. Nakatani;N. Hayashi;Y. Uesaka;H. Fukushima https://doi.org/10.1063/1.1557971
  4. 전기전자재료학회논문지 v.11 no.5 대향타겟식 스퍼터링에 의한 Co-Cr 박막의 제작 김경환;금민종;공석현;손인환;최성민;S. Nakagawa;M. Naoe
  5. Applied surface Science v.169-170 Thin Film Properties by Facing Targets Sputtering System K. H. Kim;I. H. Son;K. B. Song;S. H. Kong;M. J. Keum;S. Nakagawa;M. Naoe https://doi.org/10.1016/S0169-4332(00)00694-2
  6. 전기전자재료학회논문지 v.15 no.3 Co-Cr(-Ta)/Si 이층막의 자기적 특성 김용진;박원효;금민종;손인환;최형욱;김경환
  7. 전기전자재료학회논문지 v.16 no.4 FBAR용 ZnO/Si $O_2$/Si 박막의 결정학적 특성에 관한 연구 금민종;손인환;최명규;추순남;최형욱;신영화;김경환
  8. 전기전자재료학회논문지 v.17 no.4 대향타겟식 스퍼터링법에 의한 FBAR용 AZO(ZnO:Al) 박막의 제작 금민종;김경환