Effect of complex magnetic structure on the magnetocaloric and magneto-transport properties in GdCuSi

Sachin Gupta; K. G. Suresh; A. V. Lukoyanov

doi:10.1007/s10853-015-9116-8

Effect of complex magnetic structure on the magnetocaloric and magneto-transport properties in GdCuSi

Sachin Gupta, K. G. Suresh, A. V. Lukoyanov

Research output: Contribution to journal › Article

17 Citations (Scopus)

Abstract

GdCuSi has been studied by structural, magnetic, magneto-thermal, and magneto-transport measurements. The compound crystallizes in the Ni₂In-type hexagonal structure. Magnetic measurements show antiferromagnetic ordering at T_N = 14.2 K and a magnetic anomaly near 5 K, which are confirmed by different measurements. Magnetocaloric effect (MCE) has been estimated from both magnetization and heat capacity data and it shows a change in sign below T_N. Similar to MCE, magnetoresistance (MR) data also show sign change below T_N. The compound shows large MCE and MR near its ordering temperature. The sign change in MCE and MR is attributed to the non-collinear antiferromagnetic structure of the compound. The theoretical calculations suggest competition of ferromagnetic and antiferromagnetic interactions, which causes non-collinear magnetic structure in this compound.

Original language	English
Pages (from-to)	5723-5728
Number of pages	6
Journal	Journal of Materials Science
Volume	50
Issue number	17
DOIs	https://doi.org/10.1007/s10853-015-9116-8
Publication status	Published - 2015 Sep 12

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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Gupta, S., Suresh, K. G., & Lukoyanov, A. V. (2015). Effect of complex magnetic structure on the magnetocaloric and magneto-transport properties in GdCuSi. Journal of Materials Science, 50(17), 5723-5728. https://doi.org/10.1007/s10853-015-9116-8

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abstract = "GdCuSi has been studied by structural, magnetic, magneto-thermal, and magneto-transport measurements. The compound crystallizes in the Ni2In-type hexagonal structure. Magnetic measurements show antiferromagnetic ordering at TN = 14.2 K and a magnetic anomaly near 5 K, which are confirmed by different measurements. Magnetocaloric effect (MCE) has been estimated from both magnetization and heat capacity data and it shows a change in sign below TN. Similar to MCE, magnetoresistance (MR) data also show sign change below TN. The compound shows large MCE and MR near its ordering temperature. The sign change in MCE and MR is attributed to the non-collinear antiferromagnetic structure of the compound. The theoretical calculations suggest competition of ferromagnetic and antiferromagnetic interactions, which causes non-collinear magnetic structure in this compound.",

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AU - Suresh, K. G.

AU - Lukoyanov, A. V.

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N2 - GdCuSi has been studied by structural, magnetic, magneto-thermal, and magneto-transport measurements. The compound crystallizes in the Ni2In-type hexagonal structure. Magnetic measurements show antiferromagnetic ordering at TN = 14.2 K and a magnetic anomaly near 5 K, which are confirmed by different measurements. Magnetocaloric effect (MCE) has been estimated from both magnetization and heat capacity data and it shows a change in sign below TN. Similar to MCE, magnetoresistance (MR) data also show sign change below TN. The compound shows large MCE and MR near its ordering temperature. The sign change in MCE and MR is attributed to the non-collinear antiferromagnetic structure of the compound. The theoretical calculations suggest competition of ferromagnetic and antiferromagnetic interactions, which causes non-collinear magnetic structure in this compound.

AB - GdCuSi has been studied by structural, magnetic, magneto-thermal, and magneto-transport measurements. The compound crystallizes in the Ni2In-type hexagonal structure. Magnetic measurements show antiferromagnetic ordering at TN = 14.2 K and a magnetic anomaly near 5 K, which are confirmed by different measurements. Magnetocaloric effect (MCE) has been estimated from both magnetization and heat capacity data and it shows a change in sign below TN. Similar to MCE, magnetoresistance (MR) data also show sign change below TN. The compound shows large MCE and MR near its ordering temperature. The sign change in MCE and MR is attributed to the non-collinear antiferromagnetic structure of the compound. The theoretical calculations suggest competition of ferromagnetic and antiferromagnetic interactions, which causes non-collinear magnetic structure in this compound.

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