Magnetic structure and successive phase transition in NpRhGa5

Shintaro Jonen, Naoto Metoki, Fuminori Honda, Koji Kaneko, Dai Aoki, Yoshiya Homma, Etsuji Yamamoto, Yoshinori Haga, Yoshinobu Shiokawa, Yoshichika Onuki

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The magnetic structure of NpRhGa5 has been investigated by neutron scattering. NpRhGa5 exhibits two antiferromagnetic phases with transition temperatures at TN 1 = 36 K and TN 2 = 33 K. Neutron diffraction experiments revealed an antiferromagnetic structure with a propagation vector q = ( 0 0 frac(1, 2) ) for both of the phases, where the Np magnetic moments are oriented along the tetragonal c-axis for TN 2 < T < TN 1 (AF1), and parallel to the [1 1 0] direction on the basal plane for T < TN 2 (AF2). At TN 2, the reorientation of magnetic moments is accompanied by a sudden increase of magnetic moments, indicative of the first order transition. The magnetic moment of Np is 0.96 ( 11 ) μB at T = 3 K and 0.44 ( 16 ) μB at T = 34 K. The magnetic form factor with | μL / μS | = 1.44 shows a dominant contribution of the orbital moment.

Original languageEnglish
Pages (from-to)1018-1020
Number of pages3
JournalPhysica B: Condensed Matter
Volume378-380
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2006 May 1

Keywords

  • Antiferromagnetic order
  • Magnetic structure
  • Neutron scattering
  • NpRhGa

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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    Jonen, S., Metoki, N., Honda, F., Kaneko, K., Aoki, D., Homma, Y., Yamamoto, E., Haga, Y., Shiokawa, Y., & Onuki, Y. (2006). Magnetic structure and successive phase transition in NpRhGa5. Physica B: Condensed Matter, 378-380(SPEC. ISS.), 1018-1020. https://doi.org/10.1016/j.physb.2006.01.503