The magnetic behaviours of R1-xGdxMn2Si2

Dincer I., Elmali A., Elerman Y.

JOURNAL OF ALLOYS AND COMPOUNDS, vol.385, no.1-2, pp.59-63, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 385 Issue: 1-2
  • Publication Date: 2004
  • Doi Number: 10.1016/j.jallcom.2004.05.013
  • Journal Name: JOURNAL OF ALLOYS AND COMPOUNDS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.59-63
  • Keywords: rare earth compounds, transition metal compounds, magnetic measurements, NEUTRON-DIFFRACTION, TRANSITIONS, CEMN2GE2, RMN2SI2
  • Ankara University Affiliated: No

Abstract

The structures and magnetic properties of Ce1-xGdxMn2Si2 and Pr1-xGdxMn2Si2 (0.2 less than or equal to x less than or equal to 0.8) were studied by X-ray powder diffraction and dc magnetization measurements. All compounds crystallize in the ThCr2Si2-type structure with space group I4/mmm. Substitution of Ce or Pr for Gd leads to a linear increase in the lattice constants and the unit cell volume. Below the Curie temperature T-C(Gd), the Gd sublattice orders and reconfigures the ordering of the Mn sublattice, in Ce1-xGdxMn2Si2 and Pr1-xGdxMn2Si2. With increasing concentration of Ce or Pr, T-C(Gd) decreases in both compounds. Below T-C(Gd) in Pr1-xGdxMn2Si2, we observed a phase transition temperature as in Nd0.6Gd0.4Mn2Si2. The results for both systems are summarized in a preliminary magnetic phase diagram. (C) 2004 Elsevier B.V. All rights reserved.