Antiferromagnetic rare earth coupling in Pr1-xTbxNi and Nd1-xTbxNi single crystals

Yuta Tajiri, Katsuhiko Nishimura*, Lingwei Li, Tokimasa Kawabata, Keisuke Sato, Kouichi Kindo, Wayne D. Hutchison

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Magnetization and specific heat measurements were carried out on pseudo-binary Pr1-xTbxNi (x = 0.0, 0.1) and Nd1-xTbxNi (x = 0.0, 0.05, 0.1, 0.15) single crystals. The magnetic transition temperatures for Pr1-xTbxNi increased with x, whereas those for Nd1-xTbxNi decreased slightly as x increased. The effective magnetic moments, deduced from the temperature dependence of susceptibility, increased with x for both systems. The saturation magnetizations observed at the magnetically easy directions for all samples suggest that the magnetic coupling between the Pr (or Nd) and Tb moments is antiferromagnetic. A noticeable increase in magnetization in higher external field, onset at 5 T, is observed for Pr0.9Tb0.1Ni and indicates that there is a rearrangement of the magnetic moments. Calculations of the crystal electric field effect of Pr and Tb in Pr1-xTbxNi were carried out using a simple point-charge model.

Original languageEnglish
Pages (from-to)5-10
Number of pages6
JournalJournal of Alloys and Compounds
Volume487
Issue number1-2
DOIs
StatePublished - 2009/11/13

Keywords

  • Anisotropy
  • Crystal growth
  • Heat capacity
  • Magnetically ordered materials
  • Magnetization

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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