Magnetization study of the heavy fermion superconductor PrOs 4Sb12

T. Tayama*, T. Sakakibara, H. Sugawara, Y. Aoki, H. Sato

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We have carefully measured the DC magnetization of a high-quality single crystal of PrOs4Sb12 down to 60 mK with a special interest in the superconducting phase. The temperature dependence of the magnetization M(T) at 100 Oe exhibits two distinct anomalies at Tc1 = 1.83 K and Tc2 = 1.65 K, in good agreement with the specific heat measurements at zero field. Increasing magnetic field H, both Tc1(H) and T c2(H) move toward lower temperatures without showing a tendency of intersecting to each other. Above 10 kOe, the transition at Tc2(H) appears to merge into a line of the peak effect which is observed near the upper critical field Hc2 in the isothermal M(H) curves, suggesting a common origin for these two phenomena.

Original languageEnglish
Pages (from-to)e183-e185
JournalJournal of Magnetism and Magnetic Materials
Volume272-276
Issue numberSUPPL. 1
DOIs
StatePublished - 2004/05

Keywords

  • DC magnetization
  • H-T phase diagram
  • Heavy-fermion supercoductors
  • Vortex state

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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