Correlation Exchange Length in Nanocrystalline Soft Magnetic Materials Characterized by Electron Holography
Magnetic ripple structure of Fe84Nb7B9 is studied by electron holography. The correlation exchange length, effective exchange and anisotropy constants are estimated from a field dependence of ripple wavelength. The function of ripple theory is adjusted with a decay constant, which reflects influence of stray field on the ripple structure. A magnetic hardness at elevated temperature is also observed and analyzed.
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
Y. Gao and D. Shindo, "Correlation Exchange Length in Nanocrystalline Soft Magnetic Materials Characterized by Electron Holography", Materials Science Forum, Vols. 475-479, pp. 4021-4028, 2005