Square-shape magnetocaloric effect in Mn3GaC

R. Burriel, L. Tocado, E. Palacios, T. Tohei, Hirofumi Wada

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We have studied the antiferro-ferromagnetic first-order transition which occurs in the giant magnetocaloric compound Mn3GaC by heat capacity at zero field and at H=5T. At H=0 we have found transitions at Tt1=155.5K and Tt2=165.2K in addition to the ferro-paramagnetic transition at TC=248K. The first one has a large anomalous entropy ΔS/R=0.36 and a strong field dependence. Direct measurements of the temperature change upon adiabatic application of magnetic field gave ΔTS≅-5K, practically independent of the initial temperature and field, over a wide temperature range below Tt1. The results are explained in terms of the magnetic phase diagram.

Original languageEnglish
Pages (from-to)715-718
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Volume290-291 PART 1
DOIs
Publication statusPublished - Apr 1 2005
Externally publishedYes

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Magnetocaloric effects
Temperature
Specific heat
Phase diagrams
temperature
Entropy
phase diagrams
specific heat
entropy
Magnetic fields
magnetic fields

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Square-shape magnetocaloric effect in Mn3GaC. / Burriel, R.; Tocado, L.; Palacios, E.; Tohei, T.; Wada, Hirofumi.

In: Journal of Magnetism and Magnetic Materials, Vol. 290-291 PART 1, 01.04.2005, p. 715-718.

Research output: Contribution to journalArticle

Burriel, R. ; Tocado, L. ; Palacios, E. ; Tohei, T. ; Wada, Hirofumi. / Square-shape magnetocaloric effect in Mn3GaC. In: Journal of Magnetism and Magnetic Materials. 2005 ; Vol. 290-291 PART 1. pp. 715-718.
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AU - Tocado, L.

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AU - Tohei, T.

AU - Wada, Hirofumi

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