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Systematic study of the temperature dependence of the saturation magnetization in Fe, Fe-Ni and Co-based amorphous alloys
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Magnetization versus temperature in the temperature interval 2-200 K was measured for amorphous alloys of three different compositions: Fe 81.5B14.5Si4, Fe40Ni38 Mo4B18, and Co70Fe5Ni 2Mo3B5Si15. The measurements were performed by means of a SQUID (superconducting quantum interference device) magnetometer. The aim was to extract information about the different mechanisms contributing to thermal demagnetization. A powerful data analysis technique based on successive minimization procedures has demonstrated that Stoner excitations of the strong ferromagnetic type play a significant role in the Fe-Ni alloy studied. The Fe-rich and Co-rich alloys do not show a measurable contribution from single-particle excitations.
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LINIERS VAZQUEZ, Macarena, FLORES, J., BERMEJO, F. j., GONZÁLEZ-MIRANDA, J. m. (jesús manuel), VICENT, J. l., TEJADA PALACIOS, Javier. Systematic study of the temperature dependence of the saturation magnetization in Fe, Fe-Ni and Co-based amorphous alloys. _IEEE Transactions on Magnetics_. 1989. Vol. 25, núm. 5, pàgs. 3363-3365. [consulta: 12 de abril de 2026]. ISSN: 0018-9464. [Disponible a: https://hdl.handle.net/2445/8623]