Annealing Effect on the Structural and Magnetic Properties of Granular Cu80Fe10Ni10 Ribbons
We report on the effect of annealing process on the structural and magnetic properties of granular Cu 80 Fe 10 Ni 10 ribbons prepared by melt spinning technique. Energy-filtered transmission electron microscopy measurements show that the precipitates (Fe 10 Ni 10 ) are localized at the grain boundar...
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Published in | Journal of superconductivity and novel magnetism Vol. 28; no. 7; pp. 2149 - 2154 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
New York
Springer US
01.07.2015
Springer Verlag |
Subjects | |
Online Access | Get full text |
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Summary: | We report on the effect of annealing process on the structural and magnetic properties of granular Cu
80
Fe
10
Ni
10
ribbons prepared by melt spinning technique. Energy-filtered transmission electron microscopy measurements show that the precipitates (Fe
10
Ni
10
) are localized at the grain boundaries of the Cu matrix for the non-annealed samples. After an annealing treatment at 600 °C, a strong diffusion of the precipitates within the Cu matrix is observed. The temperature dependence of magnetization has been analyzed using the Bloch law. Spin wave stiffness constant
D
and the exchange constant
A
were calculated from the experimental results. Furthermore, we show that the random magnetic anisotropy (RMA) model is applicable to describe the experimental results. Other fundamental parameters have also been calculated using the approach to saturation magnetization.
Ab
initio calculations based on Korringa-Kohn-Rostocker (KKR) method are carried out in order to characterize both electronic and magnetic properties. |
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ISSN: | 1557-1939 1557-1947 |
DOI: | 10.1007/s10948-015-3018-5 |