Journal of the Korean Magnetics Society (한국자기학회지)

The Korean Magnetics Society (한국자기학회)
권호 표지

MAGNETIC PROPERTIES OF Co-FERRITE FILMS BY SOLID REACTION AT LOW TEMPERATURE

  • Chiba, Masafumi (Department. of Material Science and Technology, Tokai University) ;
  • Uemura, Chikao (Department. of Material Science and Technology, Tokai University) ;
  • Arima, Hiroshi (Department. of Applied Physics, Tokai University) ;
  • Koizumi, Yoshiharu (Department. of Applied Physics, Tokai University)
  • Published : 1995.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

Co-ferrite ($CoO-Fe_{2}O_{3}$) thin films have been prepared by two ways of low temperature solid reaction including oxidation process, being based on $Co-layer/{\alpha}-Fe_{2}O_{3}$ films and $Co-layer/Fe_{3}O_{4}$ films. Magnetic properties of both Co-ferrite films have been measured and compared. The samples from $Co-layer/Fe_{3}O_{4}$ films have a large coercive force in the direction perpendicular and have a great poler kerr rotation angle at wavelength 700 nm than ones from $Co-layer/{\alpha}-Fe_{2}O_{3}$ films. The typical magnetic properties are as follows; saturation magnetization $4{\pi}Ms$, 2.9 kG; remnant magnetization $4{\pi}Mr$, 2.0 kG; coercive force Hc, 4.0 kOe; kerr rotation angle ${\PHI}k$, 0.39 deg($\lambda\;=\;700\;nm$); and initial magnetization energy E, $3.3\;{\times}\;10^6\;erg/\textrm{m}^3$, respectively.

Keywords

References

  1. Phys. Rev. v.99 R.D.Waldron
  2. J. Appl. Phys. v.27 H.J.Williams;R.D.Heidenreich;E.A.Nesbitt
  3. Phys. Rev. v.108 R.F.Penoyer;L.R.Bickford
  4. IEEE Trans. Magn. v.MAG-13 M.Satou;T.Namikawa;T.Kaneko;Y.Yamazaki
  5. J. Mag. Soc. Jpn. v.15 no.2 O.Ishii;F.Yshimura;S.Hirono
  6. J. Mag. Soc. Jpn. v.9 no.2 S.Oota;Y.Otani;A.Terada
  7. J. Mag. Soc. Jpn. v.12 no.2 E.Fujii;H.Torii;M.Aoki
  8. Ferrites;Proceedings of the Sixth Internationl Conference on Ferrites(ICF6) M.Abe
  9. J. Mag. Soc. Jpn. v.9 no.2 Y.Morikawa;T.Namikawa;Y.Yamazaki
  10. Reine und Angewandte Metalkunde in Einzeldarstellungen 15, Oxydation von Metallen und Metallegierungen Von K.Hauffe
  11. J. Phys. Soc. Jpn. v.13 S.Iida;H.Sekizawa;Y.Aiyama
  12. J. Electrochem. Soc. v.103 C.Wagner
  13. J. Electrochem. Soc. v.112 W.E.Boggs;R.H.Kachik;G.E.Pellissier
  14. J. Electrochem. Soc. v.103 C.Wagner
  15. The Bulletin of School of High-Technology for Human Welfare Tokai University v.1 M.Chiba;C.Uemura;Y.Koisumi
  16. Proc. of the 2nd. International Sympo. on Physics of Magnetic Materials(ISPMM'92) M.Chiba;C.Uemura;Y.Koizumi
  17. J. Surf. Sci. Soc. Jpn. v.13 M.Chiba;C.Uemura;Y.Koizumi
  18. Phys. Rev. v.108 R.F.Penoyer;L.R.Bickford,Jr.
  19. Phys. Rev. v.110 J.C.Slonczewski