Magnetic and magnetocaloric properties of SmxGd1-xMn2Si2

Pramod Kumar; Niraj K. Singh; K. G. Suresh; A. K. Nigam

doi:10.1016/j.jallcom.2006.03.025

Magnetic and magnetocaloric properties of Sm_xGd_1-xMn₂Si₂

Pramod Kumar, Niraj K. Singh, K. G. Suresh, A. K. Nigam

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

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Abstract

The magnetic and magnetocaloric properties of Gd_1-xSm_xMn₂Si₂ compounds with 0 ≤ x ≤ 1 have been studied to determine their suitability as magnetic refrigerant materials. The rare earth ordering temperatures are found to decrease from 60 K for x = 0 to 37 K for x = 1. The temperature variations of magnetization under 'field-cooled' and 'zero-field-cooled' conditions are found to differ slightly, indicating a small thermomagnetic irreversibility. Magnetocaloric effect is calculated in terms of isothermal magnetic entropy change (ΔS_M) using the magnetization isotherms. The maximum values of ΔS_M are found to be 5.9 J kg^-1 K^-1 in GdMn₂Si₂ and 3.4 J kg^-1 K^-1 in SmMn₂Si₂.

Original language	English
Pages (from-to)	42-45
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	427
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2006.03.025
State	Published - 16 Jan 2007
Externally published	Yes

Keywords

Ferrimagnets
Magnetic entropy
Magnetocaloric effect
Spin fluctuations

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10.1016/j.jallcom.2006.03.025

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title = "Magnetic and magnetocaloric properties of SmxGd1-xMn2Si2",

abstract = "The magnetic and magnetocaloric properties of Gd1-xSmxMn2Si2 compounds with 0 ≤ x ≤ 1 have been studied to determine their suitability as magnetic refrigerant materials. The rare earth ordering temperatures are found to decrease from 60 K for x = 0 to 37 K for x = 1. The temperature variations of magnetization under 'field-cooled' and 'zero-field-cooled' conditions are found to differ slightly, indicating a small thermomagnetic irreversibility. Magnetocaloric effect is calculated in terms of isothermal magnetic entropy change (ΔSM) using the magnetization isotherms. The maximum values of ΔSM are found to be 5.9 J kg-1 K-1 in GdMn2Si2 and 3.4 J kg-1 K-1 in SmMn2Si2.",

keywords = "Ferrimagnets, Magnetic entropy, Magnetocaloric effect, Spin fluctuations",

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AU - Kumar, Pramod

AU - Singh, Niraj K.

AU - Suresh, K. G.

AU - Nigam, A. K.

PY - 2007/1/16

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N2 - The magnetic and magnetocaloric properties of Gd1-xSmxMn2Si2 compounds with 0 ≤ x ≤ 1 have been studied to determine their suitability as magnetic refrigerant materials. The rare earth ordering temperatures are found to decrease from 60 K for x = 0 to 37 K for x = 1. The temperature variations of magnetization under 'field-cooled' and 'zero-field-cooled' conditions are found to differ slightly, indicating a small thermomagnetic irreversibility. Magnetocaloric effect is calculated in terms of isothermal magnetic entropy change (ΔSM) using the magnetization isotherms. The maximum values of ΔSM are found to be 5.9 J kg-1 K-1 in GdMn2Si2 and 3.4 J kg-1 K-1 in SmMn2Si2.

AB - The magnetic and magnetocaloric properties of Gd1-xSmxMn2Si2 compounds with 0 ≤ x ≤ 1 have been studied to determine their suitability as magnetic refrigerant materials. The rare earth ordering temperatures are found to decrease from 60 K for x = 0 to 37 K for x = 1. The temperature variations of magnetization under 'field-cooled' and 'zero-field-cooled' conditions are found to differ slightly, indicating a small thermomagnetic irreversibility. Magnetocaloric effect is calculated in terms of isothermal magnetic entropy change (ΔSM) using the magnetization isotherms. The maximum values of ΔSM are found to be 5.9 J kg-1 K-1 in GdMn2Si2 and 3.4 J kg-1 K-1 in SmMn2Si2.

KW - Ferrimagnets

KW - Magnetic entropy

KW - Magnetocaloric effect

KW - Spin fluctuations

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ER -

Magnetic and magnetocaloric properties of Sm_xGd_1-xMn₂Si₂

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Keywords

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