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

16 Scopus citations

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

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2006.03.025

Cite this

@article{333c074faa994036adc42360f6f1d296,

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",

author = "Pramod Kumar and Singh, \{Niraj K.\} and Suresh, \{K. G.\} and Nigam, \{A. K.\}",

year = "2007",

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doi = "10.1016/j.jallcom.2006.03.025",

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TY - JOUR

T1 - Magnetic and magnetocaloric properties of SmxGd1-xMn2Si2

AU - Kumar, Pramod

AU - Singh, Niraj K.

AU - Suresh, K. G.

AU - Nigam, A. K.

PY - 2007/1/16

Y1 - 2007/1/16

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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DO - 10.1016/j.jallcom.2006.03.025

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