Magnetic phase transition and magnetocaloric effect of DyMn2Ge2

Hirofumi Wada, Y. Tanabe, K. Hagiwara, M. Shiga

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

We examined magnetocaloric effects of DyMn2Ge2, which shows two successive first-order phase transitions at 36 and 40 K. Above 40 K, DyMn2Ge2 shows the metamagnetic transition in an appropriate magnetic field and large magnetocaloric effects were observed. The magnetization measurements for single crystals have revealed that the intermediate state appearing between 36 and 40 K in zero field is essentially the same as the high-field phase, which is induced by a magnetic field of 7 T at 4.2 K. Anomalous field dependence of isothermal magnetic entropy change was observed. We discuss the origin of anomalous entropy change as well as that of large magnetocaloric effects in connection with the magnetic structure of DyMn2Ge2.

Original languageEnglish
Pages (from-to)203-210
Number of pages8
JournalJournal of Magnetism and Magnetic Materials
Volume218
Issue number2
DOIs
Publication statusPublished - Aug 1 2000
Externally publishedYes

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Magnetocaloric effects
Phase transitions
Entropy
entropy
Magnetic fields
Magnetic structure
magnetic fields
Magnetization
Single crystals
magnetization
single crystals

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Magnetic phase transition and magnetocaloric effect of DyMn2Ge2 . / Wada, Hirofumi; Tanabe, Y.; Hagiwara, K.; Shiga, M.

In: Journal of Magnetism and Magnetic Materials, Vol. 218, No. 2, 01.08.2000, p. 203-210.

Research output: Contribution to journalArticle

Wada, Hirofumi ; Tanabe, Y. ; Hagiwara, K. ; Shiga, M. / Magnetic phase transition and magnetocaloric effect of DyMn2Ge2 In: Journal of Magnetism and Magnetic Materials. 2000 ; Vol. 218, No. 2. pp. 203-210.
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