Measurement of pressure effects on the magnetic and the magnetocaloric properties of the intermetallic compounds DyCo2 and Er(Co 1-xSix)2

Niraj K. Singh, Pramod Kumar, K. G. Suresh, A. K. Nigam, A. A. Coelho, S. Gama

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

The effect of external pressure on the magnetic properties and magnetocaloric effect of polycrystalline compounds DyCo2 and Er(Co1-xSix)2 (x ≤ 0,0.025 and 0.05) has been studied. The ordering temperatures of both the parent and the Si-substituted compounds are found to decrease with pressure. In all the compounds, the critical field for metamagnetic transition increases with pressure. It is seen that the magnetocaloric effect in the parent compounds is almost insensitive to pressure, while there is considerable enhancement in the case of Si-substituted compounds. Spin fluctuations arising from the magnetovolume effect play a crucial role in determining the pressure dependence of the magnetocaloric effect in these compounds. The variation of the magnetocaloric effect is explained on the basis of the Landau theory of magnetic phase transitions.

Original languageEnglish
Article number036213
JournalJournal of Physics Condensed Matter
Volume19
Issue number3
DOIs
StatePublished - 24 Jan 2007
Externally publishedYes

Fingerprint

Dive into the research topics of 'Measurement of pressure effects on the magnetic and the magnetocaloric properties of the intermetallic compounds DyCo2 and Er(Co 1-xSix)2'. Together they form a unique fingerprint.

Cite this