Direct magnetocaloric measurements of Fe-B-Cr-X (X = La, Ce) amorphous ribbons

J. Y. Law; V. Franco; R. V. Ramanujan

doi:10.1063/1.3613666

Direct magnetocaloric measurements of Fe-B-Cr-X (X = La, Ce) amorphous ribbons

J. Y. Law, V. Franco^*, R. V. Ramanujan

^*Corresponding author for this work

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

27 Citations (Scopus)

Abstract

A procedure has been developed to directly measure the adiabatic temperature change of amorphous melt-spun Fe-based ribbons displaying attractive room temperature magnetocaloric properties. Polycrystalline Gd ribbons are used as a reference material to compensate for the contribution of the sample holder to the experimental values. Fe₇₈B₁₂Cr₈Ce ₂ and Fe₇₅B₁₂Cr₈Ce₅ melt-spun ribbons exhibited a peak adiabatic temperature change (ΔT _ad^pk) ∼ 58% larger than Co_82.9Si _5.9Fe_4.5Cr₄B_2.7 amorphous ribbons. The ΔT_ad^pk in Fe₇₈B₁₂Cr ₈Ce_2, Fe₇₅B₁₂Cr₈Ce ₅, and Fe₇₉B₁₂Cr₈La₁ ribbons displayed ∼ 18-33% enhanced ΔT_ad^pk compared to a GdAl₂ alloy.

Original language	English
Article number	023907
Journal	Journal of Applied Physics
Volume	110
Issue number	2
DOIs	https://doi.org/10.1063/1.3613666
Publication status	Published - Jul 15 2011
Externally published	Yes

ASJC Scopus Subject Areas

General Physics and Astronomy

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title = "Direct magnetocaloric measurements of Fe-B-Cr-X (X = La, Ce) amorphous ribbons",

abstract = "A procedure has been developed to directly measure the adiabatic temperature change of amorphous melt-spun Fe-based ribbons displaying attractive room temperature magnetocaloric properties. Polycrystalline Gd ribbons are used as a reference material to compensate for the contribution of the sample holder to the experimental values. Fe78B12Cr8Ce 2 and Fe75B12Cr8Ce5 melt-spun ribbons exhibited a peak adiabatic temperature change (ΔT adpk) ∼ 58\% larger than Co82.9Si 5.9Fe4.5Cr4B2.7 amorphous ribbons. The ΔTadpk in Fe78B12Cr 8Ce2, Fe75B12Cr8Ce 5, and Fe79B12Cr8La1 ribbons displayed ∼ 18-33\% enhanced ΔTadpk compared to a GdAl2 alloy.",

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AU - Law, J. Y.

AU - Franco, V.

AU - Ramanujan, R. V.

PY - 2011/7/15

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N2 - A procedure has been developed to directly measure the adiabatic temperature change of amorphous melt-spun Fe-based ribbons displaying attractive room temperature magnetocaloric properties. Polycrystalline Gd ribbons are used as a reference material to compensate for the contribution of the sample holder to the experimental values. Fe78B12Cr8Ce 2 and Fe75B12Cr8Ce5 melt-spun ribbons exhibited a peak adiabatic temperature change (ΔT adpk) ∼ 58% larger than Co82.9Si 5.9Fe4.5Cr4B2.7 amorphous ribbons. The ΔTadpk in Fe78B12Cr 8Ce2, Fe75B12Cr8Ce 5, and Fe79B12Cr8La1 ribbons displayed ∼ 18-33% enhanced ΔTadpk compared to a GdAl2 alloy.

AB - A procedure has been developed to directly measure the adiabatic temperature change of amorphous melt-spun Fe-based ribbons displaying attractive room temperature magnetocaloric properties. Polycrystalline Gd ribbons are used as a reference material to compensate for the contribution of the sample holder to the experimental values. Fe78B12Cr8Ce 2 and Fe75B12Cr8Ce5 melt-spun ribbons exhibited a peak adiabatic temperature change (ΔT adpk) ∼ 58% larger than Co82.9Si 5.9Fe4.5Cr4B2.7 amorphous ribbons. The ΔTadpk in Fe78B12Cr 8Ce2, Fe75B12Cr8Ce 5, and Fe79B12Cr8La1 ribbons displayed ∼ 18-33% enhanced ΔTadpk compared to a GdAl2 alloy.

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Direct magnetocaloric measurements of Fe-B-Cr-X (X = La, Ce) amorphous ribbons

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