Successive magnetic transitions with large refrigerant capacity in arc-melted Mn3−xFexSn2 (x = 0.3, 0.7) alloys

Sonam Perween; Lalita; A. Rathi; R. P. Pant; B. Gahtori; P. D. Babu; G. A. Basheed

doi:10.1016/j.jmmm.2021.168466

Successive magnetic transitions with large refrigerant capacity in arc-melted Mn_3−xFe_xSn₂ (x = 0.3, 0.7) alloys

Sonam Perween, Lalita, A. Rathi, R. P. Pant, B. Gahtori, P. D. Babu, G. A. Basheed

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

Abstract

This work investigates the magneto-caloric effect and critical behavior in Mn_3−xFe_xSn₂ (x = 0.3, 0.7) alloys synthesized by arc melting method. The alloys show two successive second order magnetic phase transitions at T_C1≈ 254 K (261 K) and T_C2≈ 205 K (185 K), respectively for x = 0.3 (0.7). The modified Arrot plot study around paramagnetic–ferromagnetic transition at T_C1 reveals the critical exponent, β = 0.397 (0.378) with long-range of magnetic interactions for x = 0.3 (0.7). Importantly, the magneto-caloric study for x = 0.3 (0.7) gives large refrigerant capacity (RC) of 330 (250) J/kg at 5 T applied magnetic field. The large RC value and two successive magnetic transitions makes these earth abundant-based Mn_3−xFe_xSn₂ alloys highly promising for magnetic refrigeration in a wide temperature span.

Original language	English
Article number	168466
Journal	Journal of Magnetism and Magnetic Materials
Volume	541
DOIs	https://doi.org/10.1016/j.jmmm.2021.168466
Publication status	Published - 1 Jan 2022
Externally published	Yes

Keywords

Critical exponents
Magnetic refrigeration
Magneto-caloric effect

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2021.168466

Cite this

@article{e1c0cce8ad7f4c7ba9d21494e2905887,

title = "Successive magnetic transitions with large refrigerant capacity in arc-melted Mn3−xFexSn2 (x = 0.3, 0.7) alloys",

abstract = "This work investigates the magneto-caloric effect and critical behavior in Mn3−xFexSn2 (x = 0.3, 0.7) alloys synthesized by arc melting method. The alloys show two successive second order magnetic phase transitions at TC1≈ 254 K (261 K) and TC2≈ 205 K (185 K), respectively for x = 0.3 (0.7). The modified Arrot plot study around paramagnetic–ferromagnetic transition at TC1 reveals the critical exponent, β = 0.397 (0.378) with long-range of magnetic interactions for x = 0.3 (0.7). Importantly, the magneto-caloric study for x = 0.3 (0.7) gives large refrigerant capacity (RC) of 330 (250) J/kg at 5 T applied magnetic field. The large RC value and two successive magnetic transitions makes these earth abundant-based Mn3−xFexSn2 alloys highly promising for magnetic refrigeration in a wide temperature span.",

keywords = "Critical exponents, Magnetic refrigeration, Magneto-caloric effect",

author = "Sonam Perween and Lalita and A. Rathi and Pant, {R. P.} and B. Gahtori and Babu, {P. D.} and Basheed, {G. A.}",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2022",

month = jan,

day = "1",

doi = "10.1016/j.jmmm.2021.168466",

language = "English",

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journal = "Journal of Magnetism and Magnetic Materials",

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T1 - Successive magnetic transitions with large refrigerant capacity in arc-melted Mn3−xFexSn2 (x = 0.3, 0.7) alloys

AU - Perween, Sonam

AU - Lalita,

AU - Rathi, A.

AU - Pant, R. P.

AU - Gahtori, B.

AU - Babu, P. D.

AU - Basheed, G. A.

PY - 2022/1/1

Y1 - 2022/1/1

N2 - This work investigates the magneto-caloric effect and critical behavior in Mn3−xFexSn2 (x = 0.3, 0.7) alloys synthesized by arc melting method. The alloys show two successive second order magnetic phase transitions at TC1≈ 254 K (261 K) and TC2≈ 205 K (185 K), respectively for x = 0.3 (0.7). The modified Arrot plot study around paramagnetic–ferromagnetic transition at TC1 reveals the critical exponent, β = 0.397 (0.378) with long-range of magnetic interactions for x = 0.3 (0.7). Importantly, the magneto-caloric study for x = 0.3 (0.7) gives large refrigerant capacity (RC) of 330 (250) J/kg at 5 T applied magnetic field. The large RC value and two successive magnetic transitions makes these earth abundant-based Mn3−xFexSn2 alloys highly promising for magnetic refrigeration in a wide temperature span.

AB - This work investigates the magneto-caloric effect and critical behavior in Mn3−xFexSn2 (x = 0.3, 0.7) alloys synthesized by arc melting method. The alloys show two successive second order magnetic phase transitions at TC1≈ 254 K (261 K) and TC2≈ 205 K (185 K), respectively for x = 0.3 (0.7). The modified Arrot plot study around paramagnetic–ferromagnetic transition at TC1 reveals the critical exponent, β = 0.397 (0.378) with long-range of magnetic interactions for x = 0.3 (0.7). Importantly, the magneto-caloric study for x = 0.3 (0.7) gives large refrigerant capacity (RC) of 330 (250) J/kg at 5 T applied magnetic field. The large RC value and two successive magnetic transitions makes these earth abundant-based Mn3−xFexSn2 alloys highly promising for magnetic refrigeration in a wide temperature span.

KW - Critical exponents

KW - Magnetic refrigeration

KW - Magneto-caloric effect

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