High-energy-product rapidly solidified Fe-Nd-B alloys with additions of Nb and Si

Azwar Manaf; M. Leonowicz; H. A. Davies; R. A. Buckley

doi:10.1063/1.352584

High-energy-product rapidly solidified Fe-Nd-B alloys with additions of Nb and Si

Azwar Manaf, M. Leonowicz, H. A. Davies, R. A. Buckley

Department of Physics

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

The ternary Fe_82.4Nd_13.1B_4.5 alloy, which exhibits enhanced remanence (0.92 T) in the rapidly solidified state, was further modified by partial substitution of Nb or Si, or both Nb and Si, for Fe. The latter alloys containing Nb and Si, while maintaining remanence and coercivity values comparable with those obtained for ternary and quaternary compositions, exhibit higher (BH)_max of ∼150 kJ m^-3. This results from improved squareness of the demagnetization curve in the second quadrant of the B-H loop and is due to a more homogeneous distribution of very small (∼20-30 nm) crystallites through the ribbon thickness. This can be attributed to the effect of increased undercooling of the liquid alloys containing Nb and Si on quenching.

Original language	English
Pages (from-to)	6473-6475
Number of pages	3
Journal	Journal of Applied Physics
Volume	73
Issue number	10
DOIs	https://doi.org/10.1063/1.352584
Publication status	Published - 1993

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abstract = "The ternary Fe82.4Nd13.1B4.5 alloy, which exhibits enhanced remanence (0.92 T) in the rapidly solidified state, was further modified by partial substitution of Nb or Si, or both Nb and Si, for Fe. The latter alloys containing Nb and Si, while maintaining remanence and coercivity values comparable with those obtained for ternary and quaternary compositions, exhibit higher (BH)max of ∼150 kJ m-3. This results from improved squareness of the demagnetization curve in the second quadrant of the B-H loop and is due to a more homogeneous distribution of very small (∼20-30 nm) crystallites through the ribbon thickness. This can be attributed to the effect of increased undercooling of the liquid alloys containing Nb and Si on quenching.",

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AU - Manaf, Azwar

AU - Leonowicz, M.

AU - Davies, H. A.

AU - Buckley, R. A.

PY - 1993

Y1 - 1993

N2 - The ternary Fe82.4Nd13.1B4.5 alloy, which exhibits enhanced remanence (0.92 T) in the rapidly solidified state, was further modified by partial substitution of Nb or Si, or both Nb and Si, for Fe. The latter alloys containing Nb and Si, while maintaining remanence and coercivity values comparable with those obtained for ternary and quaternary compositions, exhibit higher (BH)max of ∼150 kJ m-3. This results from improved squareness of the demagnetization curve in the second quadrant of the B-H loop and is due to a more homogeneous distribution of very small (∼20-30 nm) crystallites through the ribbon thickness. This can be attributed to the effect of increased undercooling of the liquid alloys containing Nb and Si on quenching.

AB - The ternary Fe82.4Nd13.1B4.5 alloy, which exhibits enhanced remanence (0.92 T) in the rapidly solidified state, was further modified by partial substitution of Nb or Si, or both Nb and Si, for Fe. The latter alloys containing Nb and Si, while maintaining remanence and coercivity values comparable with those obtained for ternary and quaternary compositions, exhibit higher (BH)max of ∼150 kJ m-3. This results from improved squareness of the demagnetization curve in the second quadrant of the B-H loop and is due to a more homogeneous distribution of very small (∼20-30 nm) crystallites through the ribbon thickness. This can be attributed to the effect of increased undercooling of the liquid alloys containing Nb and Si on quenching.

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High-energy-product rapidly solidified Fe-Nd-B alloys with additions of Nb and Si

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