Heat capacity and ac magnetic susceptibility measurements of magnetic superconductor HoNi2B2C under pressure

M. Mito, T. Tanimoto, Tatsuya Kawae, K. Takeda, J. H. Choi, S. I. Lee

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Abstract

A magnetic superconductor HoNi2B2C exhibits the superconducting transition at around 8.5 K and successive antiferromagneic transitions at around 5 K. We have performed the heat capacity measurements for P ≤ 12 kbar and ac magnetic susceptibility measurements for P ≤ 23 kbar, in order to investigate the pressure dependence of these transitions. The above two kinds of transitions show contrary pressure dependence each other. At around P = 23 kbar, they cannot be distinguished each other, and this situation is similar to that in Ho0.8Dyo2Ni2B2C. The magnetic entropy (S) consumed at the magnetic transitions decreases with dS/dP = -0.14 J/K-mol-kbar suggesting that the crystalline electric field changes by applying pressure.

Original languageEnglish
Pages (from-to)148-149
Number of pages2
Journaljournal of the physical society of japan
Volume76
Issue numberSUPPL. A
DOIs
Publication statusPublished - Jan 1 2007

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specific heat
magnetic permeability
pressure dependence
entropy
electric fields

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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Heat capacity and ac magnetic susceptibility measurements of magnetic superconductor HoNi2B2C under pressure. / Mito, M.; Tanimoto, T.; Kawae, Tatsuya; Takeda, K.; Choi, J. H.; Lee, S. I.

In: journal of the physical society of japan, Vol. 76, No. SUPPL. A, 01.01.2007, p. 148-149.

Research output: Contribution to journalArticle

Mito, M. ; Tanimoto, T. ; Kawae, Tatsuya ; Takeda, K. ; Choi, J. H. ; Lee, S. I. / Heat capacity and ac magnetic susceptibility measurements of magnetic superconductor HoNi2B2C under pressure. In: journal of the physical society of japan. 2007 ; Vol. 76, No. SUPPL. A. pp. 148-149.
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