Half-metallic ferromagnetism with high magnetic moment and high Curie temperature in Co$_2$FeSi

6533b7d1fe1ef96bd125c35a

RESEARCH PRODUCT

Half-metallic ferromagnetism with high magnetic moment and high Curie temperature in Co$_2$FeSi

Sabine Wurmehl Gerhard H. Fecher Vadim Ksenofontov Frederick Casper Ullrich Stumm Claudia Felser Hong-ji Lin Yeukuang Hwu

subject

Condensed Matter - Materials Science Materials science Condensed matter physics Magnetic moment Magnetic circular dichroism General Physics and Astronomy Materials Science (cond-mat.mtrl-sci)FOS: Physical sciences engineering.material Heusler compound Spectral line Ferromagnetism Excited state engineering Curie temperature Spectroscopy

description

Co$_2$FeSi crystallizes in the ordered L2$_1$ structure as proved by X-ray diffraction and M\"o\ss bauer spectroscopy. The magnetic moment of Co$_2$FeSi was measured to be about $6\mu_B$ at 5K. Magnetic circular dichroism spectra excited by soft X-rays (XMCD) were taken to determine the element specific magnetic moments of Co and Fe. The Curie temperature was measured with different methods to be ($1100\pm20$)K. Co$_2$FeSi was found to be the Heusler compound as well as the half-metallic ferromagnet with the highest magnetic moment and Curie temperature.

year	journal	country	edition	language
2006-04-15

https://dx.doi.org/10.48550/arxiv.cond-mat/0511463

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