First Order Reversal Curve Study of SmFe₂ Melt-Spun Ribbons.

ABSTRACT: First-order reversal curves (FORC) and the FORC distribution provide a detailed characterization of the relative proportions of reversible and irreversible components of the magnetization of a material, revealing the dominant interactions in the system. Alloys with the nominal composition SmFe₂ were obtained by melt-spinning with a cooper wheel velocity of 30 m/s. X-ray powder diffraction analysis showed a greater part consisting of an amorphous phase and a very small amount of SmFe₂ crystalline phase with an average crystallite size of 8 nm. A constant acceleration Mössbauer spectrum, measured at room temperature in transmission mode, was fitted to a continuous distribution of effective fields at the nucleus of the amorphous phase (about 84% of the total area), plus two sextets for the no

SUBMITTER: Grijalva-Castillo MC 

PROVIDER: S-EPMC6212980 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature