Study of the magnetostructural transition in critical-element free Mn1−xNi1−xFe2xSi0.95Al0.05

Bruno G. F. Eggert; Kun Wang; Sina Jafarzadeh; Christian R. Bahl; Bjørn C. Hauback; Christoph Frommen

doi:10.1063/9.0000511

Study of the magnetostructural transition in critical-element free Mn_1−xNi_1−xFe_2xSi_0.95Al_0.05

Bruno G. F. Eggert, Kun Wang, Sina Jafarzadeh, Christian R. Bahl, Bjørn C. Hauback, Christoph Frommen^*

^*Corresponding author for this work

Institute for Energy Technology

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Abstract

Two different heat treatments have been carried out on similar Mn_1−xNi_1−xFe_2xSi_0.95Al_0.05 compositions with magnetostructural transitions between hexagonal and orthorhombic crystal structures around room temperature. The samples were analyzed concerning their structural, microstructural, magnetic, and caloric properties. The results show that the introduction of a high-temperature step, before the heat treatment (1073 K/7 days) usually used in the literature for such compounds modifies the microstructure, leading to sharper transitions with shorter transition widths, and stronger latent heat peaks. Magnetic field-assisted calorimetry and vibrating sample magnetometry provide methods to assess the effect of magnetic field on the broad transitions for the sample with x = 0.32 and the sharp transitions seen in the sample with x = 0.31.

Original language	English
Article number	025215
Journal	AIP Advances
Volume	13
Issue number	2
Number of pages	5
ISSN	2158-3226
DOIs	https://doi.org/10.1063/9.0000511
Publication status	Published - 2023

Bibliographical note

This work was financed by The Research Council of Norway through the NANO2021 program, Project No. 287150.

Note: This paper was presented at the 67th Annual Conference on Magnetism and Magnetic Materials.

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Study of the magnetostructural transition in critical-element free Mn_1-xNi_1-xFe_2xSi_0.95Al_0.05
Eggert, B., Wang, K., Jafarzadeh, S., Bahl, C. R., Hauback, B. C. & Frommen, C., 2022, p. 426-426. 1 p.
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title = "Study of the magnetostructural transition in critical-element free Mn1−xNi1−xFe2xSi0.95Al0.05",

abstract = "Two different heat treatments have been carried out on similar Mn1−xNi1−xFe2xSi0.95Al0.05 compositions with magnetostructural transitions between hexagonal and orthorhombic crystal structures around room temperature. The samples were analyzed concerning their structural, microstructural, magnetic, and caloric properties. The results show that the introduction of a high-temperature step, before the heat treatment (1073 K/7 days) usually used in the literature for such compounds modifies the microstructure, leading to sharper transitions with shorter transition widths, and stronger latent heat peaks. Magnetic field-assisted calorimetry and vibrating sample magnetometry provide methods to assess the effect of magnetic field on the broad transitions for the sample with x = 0.32 and the sharp transitions seen in the sample with x = 0.31.",

author = "Eggert, {Bruno G. F.} and Kun Wang and Sina Jafarzadeh and Bahl, {Christian R.} and Hauback, {Bj{\o}rn C.} and Christoph Frommen",

note = "This work was financed by The Research Council of Norway through the NANO2021 program, Project No. 287150. Note: This paper was presented at the 67th Annual Conference on Magnetism and Magnetic Materials.",

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doi = "10.1063/9.0000511",

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AU - Eggert, Bruno G. F.

AU - Wang, Kun

AU - Jafarzadeh, Sina

AU - Bahl, Christian R.

AU - Hauback, Bjørn C.

AU - Frommen, Christoph

N1 - This work was financed by The Research Council of Norway through the NANO2021 program, Project No. 287150. Note: This paper was presented at the 67th Annual Conference on Magnetism and Magnetic Materials.

PY - 2023

Y1 - 2023

N2 - Two different heat treatments have been carried out on similar Mn1−xNi1−xFe2xSi0.95Al0.05 compositions with magnetostructural transitions between hexagonal and orthorhombic crystal structures around room temperature. The samples were analyzed concerning their structural, microstructural, magnetic, and caloric properties. The results show that the introduction of a high-temperature step, before the heat treatment (1073 K/7 days) usually used in the literature for such compounds modifies the microstructure, leading to sharper transitions with shorter transition widths, and stronger latent heat peaks. Magnetic field-assisted calorimetry and vibrating sample magnetometry provide methods to assess the effect of magnetic field on the broad transitions for the sample with x = 0.32 and the sharp transitions seen in the sample with x = 0.31.

AB - Two different heat treatments have been carried out on similar Mn1−xNi1−xFe2xSi0.95Al0.05 compositions with magnetostructural transitions between hexagonal and orthorhombic crystal structures around room temperature. The samples were analyzed concerning their structural, microstructural, magnetic, and caloric properties. The results show that the introduction of a high-temperature step, before the heat treatment (1073 K/7 days) usually used in the literature for such compounds modifies the microstructure, leading to sharper transitions with shorter transition widths, and stronger latent heat peaks. Magnetic field-assisted calorimetry and vibrating sample magnetometry provide methods to assess the effect of magnetic field on the broad transitions for the sample with x = 0.32 and the sharp transitions seen in the sample with x = 0.31.

U2 - 10.1063/9.0000511

DO - 10.1063/9.0000511

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ER -

Study of the magnetostructural transition in critical-element free Mn1−xNi1−xFe2xSi0.95Al0.05

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Study of the magnetostructural transition in critical-element free Mn1-xNi1-xFe2xSi0.95Al0.05

Cite this

Study of the magnetostructural transition in critical-element free Mn_1−xNi_1−xFe_2xSi_0.95Al_0.05

Study of the magnetostructural transition in critical-element free Mn_1-xNi_1-xFe_2xSi_0.95Al_0.05