Paper Title:
Effect of O2 Partial Pressure on Magnetic Properties of Alloys CoFe-Rich Nanocrystalline Thin Films
  Abstract

Alloys of CoFe-rich magnetic films are well known as typical soft magnetic alloys. They are used for many kinds of electric and electronic parts such as magnetic recording heads, transformers and inductors. In order to get superior soft magnetic properties of the CoFe-based nanocrystalline thin films, the effect of O2 partial pressure on magnetic properties of Co-Fe-Hf-O nanocrystalline thin films have been investigated. It is found that the soft magnetic properties and electrical property of these films show a dependence on the partial pressure of reactive gases, which presumably changes the microstructure of the films and related magnetic anisotropy. With optimal conditions, thin film exhibit excellent soft magnetic properties: saturation magnetization (4πMs) of 21 kG, magnetic coercivity (Hc) of 0.18 Oe, anisotropy field (Hk) of 49 Oe, and an electrical property is also shown to be as high as 300 μcm. The combination of high 4πMs and relatively high Hk in these films are believed to be partly responsible for the excellent ultra-high-frequency behavior

  Info
Periodical
Materials Science Forum (Volumes 558-559)
Edited by
S.-J.L. Kang, M.Y. Huh, N.M. Hwang, H. Homma, K. Ushioda and Y. Ikuhara
Pages
1367-1370
DOI
10.4028/www.scientific.net/MSF.558-559.1367
Citation
L.V. Tho, K.E. Lee, C. G. Kim, C. O. Kim, W.S. Cho, "Effect of O2 Partial Pressure on Magnetic Properties of Alloys CoFe-Rich Nanocrystalline Thin Films", Materials Science Forum, Vols. 558-559, pp. 1367-1370, 2007
Online since
October 2007
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$32.00
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