Weak Ferromagnetism in Fe1-xCoxSb2
Rongwei Hu, R. P. Hermann, F. Grandjean, Y. Lee, J. B. Warren, V. F., Mitrovic, C. Petrovic
TL;DR
This study investigates weak ferromagnetism in Fe1-xCoxSb2 using magnetization and Mossbauer measurements, revealing a small spontaneous magnetic moment and discussing its origin within the material's electronic structure.
Contribution
It provides new insights into the intrinsic nature of weak ferromagnetism in Fe1-xCoxSb2 and rules out extrinsic sources as its origin.
Findings
Small spontaneous magnetic moment observed along the b-axis for 0.2<= x <= 0.4
Structural analysis suggests intrinsic ferromagnetism, not extrinsic
Results interpreted within the nearly magnetic electronic structure framework
Abstract
Weak ferromagnetism in Fe1-xCoxSb2 is studied by magnetization and Mossbauer measurements. A small spontaneous magnetic moment of the order of 10^-3 uB appears along the b-axis for 0.2<= x <= 0.4. Based on the structural analysis, we argue against extrinsic sources of weak ferromagnetism. We discuss our results in the framework of the nearly magnetic electronic structure of the parent compound FeSb2.
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