Magnetism of Body-Centered Tetragonal FeRh1−xPdx Alloys (I) Magnetic Properties

Shinji Yuasa, Hideki Miyajima, Yoshichika Otani, Akimasa Sakuma

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

Crystalline structures and magnetic properties of the FeRh1−xPdx system were investigated. Substitution of Pd for Rh stabilized body-centered tetragonal (bct) structure of the ordered CuAu-type with increasing axial ratio c/a from 1.18 to 1.36. The bct alloys in the range x=0.530∼0.61 exhibited a first-order phase transition from antiferromagnetic to ferromagnetic state, while the bct alloys with x<0.530 exhibited a first-order phase transition from antiferromagnetic to Curie paramagnetic state. Both the axial ratio and the volume increased abruptly at the transitions. A new ferromagnetic phase with orthorhombic structure with the space group Cmmm was found in the bct alloys with x=0.525∼0.61 below room temperature. This ferromagnetic phase possesses a larger magnetic moment than that of the bct phase. Reduction of the crystalline symmetry may have enhanced the magnetic moment.

Original languageEnglish
Pages (from-to)4906-4913
Number of pages8
Journaljournal of the physical society of japan
Volume64
Issue number12
DOIs
Publication statusPublished - 1995 Jan 1
Externally publishedYes

Keywords

  • FeRhPd alloys
  • body-centered tetragonal structure
  • magneto-volume effect
  • orthorhombic structure
  • tetragonal elongation effect

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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