Magnetic and Thermal Properties of CeIrIn5 and CeRhIn5

Tetsuya Takeuchi, Tetsutaro Inoue, Kiyohiro Sugiyama, Dai Aoki, Yoshihumi Tokiwa, Yoshinori Haga, Koichi Kindo, Yoshichika Onuki

Research output: Contribution to journalArticlepeer-review

125 Citations (Scopus)

Abstract

We studied the magnetic properties in a non-magnetic heavy-fermion compound CeIrIn5 and an antiferromagnetic compound CeRhIn5 with the tetragonal structure. High-field magnetization of CeIrIn5 shows a weak metamagnetic transition around 420 kOe for the field along the [001] direction, while the magnetization gradually increases up to 500 kOe for [110]. On the other hand, we observed a two-step metamagnetic transition for the field perpendicular to [001] at 20 and 500 kOe in CeRhIn5. The magnetization is of the x-y type. The former transition indicates a 1/ cosθ dependence, where the θ means a tilted angle of the field direction from the (001) plane. From the magnetic susceptibility and high-field, magnetization measurements, we formed a magnetic phase diagram in CeRhIn5. The temperature dependences of the magnetic susceptibility and thermal expansion coefficient of both compounds were analyzed on the basis of the crystalline electric field model.

Original languageEnglish
Pages (from-to)877-883
Number of pages7
Journaljournal of the physical society of japan
Volume70
Issue number3
DOIs
Publication statusPublished - 2001 Mar 1
Externally publishedYes

Keywords

  • CeIrIn
  • CeRhIn
  • Magnetization
  • Susceptibility
  • Thermal expansion

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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