Magnetic properties of hot-pressed FeSb2

Pokharel M, Zhao H, Modic KA, Ren Z, Opeil C. 2014. Magnetic properties of hot-pressed FeSb2. IEEE Transactions on Magnetics. 50(5), 6675864.

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Journal Article | Published | English

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Author
Pokharel, Mani; Zhao, Huaizhou; Modic, Kimberly AISTA ; Ren, Zhifeng; Opeil, Cyril
Abstract
We report on the magnetic properties of a hot-pressed FeSb 2 sample. We find a significant increase in the magnetic susceptibility in our sample when compared with the values previously reported for the polycrystalline sample. The pronounced Curie tail at low temperature corresponds to 0.2% of Fe 2+ impurities per mole. In the intrinsic conductivity region, the susceptibility due to free carriers shows thermally activated behavior and is consistent with the data reported for single crystal FeSb 2 . Based on our data and analysis, while the enhanced magnetic susceptibility in our sample comes mainly from a small amount of unreacted Fe, the contribution from the enhanced carrier density due to lattice and strain defects arising from the ball milling process is also significant. Existence of an unreacted Fe phase is evidenced by small coercivity values of ~100 observed at 50 and 300 K.
Publishing Year
Date Published
2014-05-01
Journal Title
IEEE Transactions on Magnetics
Volume
50
Issue
5
Article Number
6675864
ISSN
eISSN
IST-REx-ID

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Pokharel M, Zhao H, Modic KA, Ren Z, Opeil C. Magnetic properties of hot-pressed FeSb2. IEEE Transactions on Magnetics. 2014;50(5). doi:10.1109/TMAG.2013.2292607
Pokharel, M., Zhao, H., Modic, K. A., Ren, Z., & Opeil, C. (2014). Magnetic properties of hot-pressed FeSb2. IEEE Transactions on Magnetics. Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/TMAG.2013.2292607
Pokharel, Mani, Huaizhou Zhao, Kimberly A Modic, Zhifeng Ren, and Cyril Opeil. “Magnetic Properties of Hot-Pressed FeSb2.” IEEE Transactions on Magnetics. Institute of Electrical and Electronics Engineers, 2014. https://doi.org/10.1109/TMAG.2013.2292607.
M. Pokharel, H. Zhao, K. A. Modic, Z. Ren, and C. Opeil, “Magnetic properties of hot-pressed FeSb2,” IEEE Transactions on Magnetics, vol. 50, no. 5. Institute of Electrical and Electronics Engineers, 2014.
Pokharel M, Zhao H, Modic KA, Ren Z, Opeil C. 2014. Magnetic properties of hot-pressed FeSb2. IEEE Transactions on Magnetics. 50(5), 6675864.
Pokharel, Mani, et al. “Magnetic Properties of Hot-Pressed FeSb2.” IEEE Transactions on Magnetics, vol. 50, no. 5, 6675864, Institute of Electrical and Electronics Engineers, 2014, doi:10.1109/TMAG.2013.2292607.

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