Correlation of magnetic-properties and local atomic-structure observed by electron-yield exafs in amorphous Co₇₄Fe₆B₁₅Si₅ thin-films
Originally published in Journal of Applied Physics 69, 5457 (1991). DOI:10.1063/1.348008 (http://dx.doi.org/10.1063/1.348008).
Thin-film specimens of amorphous Co₇₄Fe₆B₁₅Si₅ were subjected to heat-treatment procedures followed by room-temperature magnetic and structural characterization in an effort to quantitatively correlate magnetic property changes to local atomic structure. Fourier transforms of electron-yield extended x-ray-absorption fine structure spectra show second and higher atomic shell ordering about transition-metal ions to occur at Tann ≈300°C. This ordering evolves to a body-centered atomic structure with heat treatments at higher temperatures. Accompanying this structural evolution is an expansion of the nearest-neighbor distance, disruption of the spin-wave-resonance spectra, and general deterioration of the soft magnetic properties.
V. G. Harris, S. A. Oliver, W. B. Nowak, C. Vittoria, K. H. Kim, and W. T. Elam. "Correlation of magnetic-properties and local atomic-structure observed by electron-yield exafs in amorphous Co₇₄Fe₆B₁₅Si₅ thin-films" Electrical and Computer Engineering Faculty Publications (1991).
Available at: http://works.bepress.com/vharris/40