Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지

Nanoparticulate Co-Ferrite Thin Films on Glass Substrate Prepared by Sol-Gel Method

유리기판에 sol-gel법으로 제조된 나노입자 Co-ferrite 박막의 특성

  • 오영제 (한국과학기술연구원 박막기술연구센터) ;
  • 최현석 (한국과학기술연구원 박막기술연구센터) ;
  • 최세영 (연세대학교 재료공학부)
  • Published : 2000.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

Cobalt ferrite thin films on Corming glass substrate were fabricated by a sol-gel method. Cobalt ferrite thin films with the grain size of 20-35 nm and thickness of 50nm were obtained. Rapid thermal annealing (RTA) and Annealing processes were adopted for comparison of characteristics of the films. Coercivity values were changed with thermal condition and magnetization values were increased as a function of soaking time. With prolonged soaking time, however, it was decreased because of the diffusion of cations from the glass substrate. The RTA process in preparation of cobalt ferrite thin film was the effective way to prevent and to form a single spinel phase in reduced soaking time. The film heated at 600$^{\circ}C$ for 30 minutes by RTA had coercivity of 2,600 Oe, saturation magnetization 460 emu/㎤, and Mr$.$$\delta$ of 1.43 memu/$\textrm{cm}^2$.

Keywords

References

  1. IEEE Transac. on Magnetics v.28 no.5 Roadmap for 10 Gbit/in² Media: Challenges E. S. Murdock;R. F. Simmons;R. Davidson
  2. 日本應用磁氣學會誌 v.17 no.5 超高密度磁氣記錄のための磁氣メディアと記綠限界 中村慶久
  3. J. Appl. Phys. v.75 no.10 Microstructural Investigation of Barium Ferrite Longitudinal Thin-Film Media B. Y. Wong;X. Sui;D. E. Laughlin;M. H. Kryder
  4. J. Mat. Sci. Lett. v.9 Preparation of Barium Hexagonal Ferrite by Sol-Gel Method P. Brahma;D. Chakravorty;K. Singh;D. Brahadur
  5. IEEE Transac. on Magnetics v.29 no.6 Microstructural Origin of the Perpendicular Anisotropy in M-type Barium Hexaferrite Thin Films Deposited by rf Magnetron Sputtering X. Sui;M. H. Kryder;B. Y. Wong;D. E. Laughlin
  6. J. Appl. Phys. v.84 no.5 Magnetic Properties of CoFe₂O₄Thin Films Prepared by a Sol-Gel Method J. G. Lee;J. Y. Park;Y. J. Oh;C. S. Kim
  7. J. Appl. Phys. v.79 no.8 Fabrication and Magnetic Properties of Metal/Cobalt Ferrite Composite Thin Films J. G. Na
  8. IEEE Trans. on Magn. v.31 no.6 Co-Zn Ferrite Rigid Disks Prepared by Plasma-Free Sputtering at Low Substrate Temperature N. Matsushita;K. Noma;S. Nakagawa;M. Naoe
  9. J. Appl. Phys. v.79 no.8 CoFe₂O₄ Thin Films Grown on (100) MgO Substrates Using Pulsed Laser Deposition P. C. dorsey;P. Lubitz;D. B. Chrisey;J. S. Horwitz
  10. J. Magn. Magn. Mater. v.155 Deposition of Single-layer CoFe₂O₄ and Multilayer CoFe₂O₄/α-Fe₂O₃with Large 4π Ms and High Hc Using Vacuum Arc Evaporation M. Naoe;N. Matsushita
  11. Jpn. J. Appl. Phys. v.34 Preparation of Co Ferrite Films by Plasma-Enhanced Metalorganic Chemical Vapor Deposition E. Fujii;H. Torii;R. Takayama;T. Hirao
  12. J. Mater. Sci. v.27 Preparation of Spinel Ferrite Thin Films by the Dip-coating Process and Their Magnetic Properties T. Tsuchiya;H. Yamashiro;T. Sei;T. Inamura
  13. J. Magn. Magn. Mater. v.177 Magnetic Properties of CoFe₂O₄ Powders and Thin Films Grown by a Sol-Gel Method J. G. Lee;H. M. Lee;C. S. Kim;Y. J. Oh
  14. Integr. Ferroelectr. v.12 no.2-4 PZT Capacitor with Ir/IrO₂/Ir Electrode Fabricated by RTA K. Matsuura;M. Nakabayashi;T. Tamura;K. Honda;S. Ohtani
  15. Integr. Ferroelectr. v.17 no.1-4 Effect of Rapid Thermal Annealing on the Interface Trap Density between PT and (Ba, Sr)TiO₃Thin Film D. H. Kwak;B. T. Jang;S. Y. Cha;J. S. Lee;H. C. Lee
  16. Introduction to Magnetic Materials Cullity
  17. Magnetism/Principles and Applications Derek Craik