Effect of post-annealing on martensitic transformation and magnetocaloric effect in Ni45Co5Mn36.7In13.3 alloys

L. Chen; F. X. Hu; J. Wang; J. Shen; J. R. Sun; B. G. Shen; J. H. Yin; L. Q. Pan; Q. Z. Huang

doi:10.1063/1.3565189

Effect of post-annealing on martensitic transformation and magnetocaloric effect in Ni₄₅Co₅Mn_36.7In_13.3 alloys

L. Chen, F. X. Hu, J. Wang, J. Shen, J. R. Sun, B. G. Shen, J. H. Yin, L. Q. Pan, Q. Z. Huang

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26 Citations (Scopus)

Abstract

The metamagnetic alloy Ni₄₅Co₅Mn _36.7In_13.3 was fabricated by conventional arc-melting technique. Subsequent annealing may relax the stress and modify the atom ordering, thus influencing the magnetic properties and martensitic transformation behaviors. Our studies demonstrate that post-annealing at temperatures ≤ 300 °C can lead to a significant change in the magnetic properties and martensitic temperature (T_M). Annealing the sample at 300 C for 3 h can cause a decrease of as much as 30 K in T_M (from 319 to 289 K) while retaining strong metamagnetic behaviors. The field-induced metamagnetic transition is accompanied with a large magnetocaloric effect. With an increase in the annealing temperature, the magnitude of the effective magnetic entropy change decreases somewhat, while the refrigeration capacity shows a slight increase.

Original language	English
Article number	07A939
Journal	Journal of Applied Physics
Volume	109
Issue number	7
DOIs	https://doi.org/10.1063/1.3565189
Publication status	Published - 1 Apr 2011
Externally published	Yes

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title = "Effect of post-annealing on martensitic transformation and magnetocaloric effect in Ni45Co5Mn36.7In13.3 alloys",

abstract = "The metamagnetic alloy Ni45Co5Mn 36.7In13.3 was fabricated by conventional arc-melting technique. Subsequent annealing may relax the stress and modify the atom ordering, thus influencing the magnetic properties and martensitic transformation behaviors. Our studies demonstrate that post-annealing at temperatures ≤ 300 °C can lead to a significant change in the magnetic properties and martensitic temperature (TM). Annealing the sample at 300 C for 3 h can cause a decrease of as much as 30 K in TM (from 319 to 289 K) while retaining strong metamagnetic behaviors. The field-induced metamagnetic transition is accompanied with a large magnetocaloric effect. With an increase in the annealing temperature, the magnitude of the effective magnetic entropy change decreases somewhat, while the refrigeration capacity shows a slight increase.",

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AU - Chen, L.

AU - Hu, F. X.

AU - Wang, J.

AU - Shen, J.

AU - Sun, J. R.

AU - Shen, B. G.

AU - Yin, J. H.

AU - Pan, L. Q.

AU - Huang, Q. Z.

PY - 2011/4/1

Y1 - 2011/4/1

N2 - The metamagnetic alloy Ni45Co5Mn 36.7In13.3 was fabricated by conventional arc-melting technique. Subsequent annealing may relax the stress and modify the atom ordering, thus influencing the magnetic properties and martensitic transformation behaviors. Our studies demonstrate that post-annealing at temperatures ≤ 300 °C can lead to a significant change in the magnetic properties and martensitic temperature (TM). Annealing the sample at 300 C for 3 h can cause a decrease of as much as 30 K in TM (from 319 to 289 K) while retaining strong metamagnetic behaviors. The field-induced metamagnetic transition is accompanied with a large magnetocaloric effect. With an increase in the annealing temperature, the magnitude of the effective magnetic entropy change decreases somewhat, while the refrigeration capacity shows a slight increase.

AB - The metamagnetic alloy Ni45Co5Mn 36.7In13.3 was fabricated by conventional arc-melting technique. Subsequent annealing may relax the stress and modify the atom ordering, thus influencing the magnetic properties and martensitic transformation behaviors. Our studies demonstrate that post-annealing at temperatures ≤ 300 °C can lead to a significant change in the magnetic properties and martensitic temperature (TM). Annealing the sample at 300 C for 3 h can cause a decrease of as much as 30 K in TM (from 319 to 289 K) while retaining strong metamagnetic behaviors. The field-induced metamagnetic transition is accompanied with a large magnetocaloric effect. With an increase in the annealing temperature, the magnitude of the effective magnetic entropy change decreases somewhat, while the refrigeration capacity shows a slight increase.

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Effect of post-annealing on martensitic transformation and magnetocaloric effect in Ni₄₅Co₅Mn_36.7In_13.3 alloys

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