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 journalArticlepeer-review

28 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 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.

Original languageEnglish
Pages (from-to)5723-5728
Number of pages6
JournalJournal of Materials Science
Volume50
Issue number17
DOIs
Publication statusPublished - 12 Sep 2015
Externally publishedYes

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