Magnetism on the Tb1-xNdxMn2Si2 silicides


Kilic A., Kervan S., Ozcan S. , Gencer A.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol.288, pp.244-249, 2005 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 288
  • Publication Date: 2005
  • Doi Number: 10.1016/j.jmmm.2004.09.012
  • Title of Journal : JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
  • Page Numbers: pp.244-249

Abstract

The structural and magnetic properties of the polycrystalline Tb1-xNdxMn2Si2 (0less than or equal toxless than or equal to1) compounds were studied by means of X-ray powder diffraction, AC susceptibility and differential scanning calorimetry (DSC). All compounds investigated crystallize in the body-centered tetragonal ThCr2Si2-type structure with the space group 14/mmm. Substitution of Nd for Tb leads to a linear increase of the lattice constants and the unit cell volume. The lattice constants and the unit cell volume obey Vegard's law. At low temperatures, the rare-earth sublattice orders and reconfigures the ordering in the Mn sublattice. The samples with x=0.2, x=0.4 and x=0.6 exhibit spin reorientation phenomenon below T-C(RE) and at about 200 K, AC susceptibility curve of these samples has a cusp denoting the Neel temperature T-N1(Mn). The Neel temperature T-N2(Mn) determined by DSC technique decreases linearly with increasing Nd content x. The results are collected in the x-T magnetic phase diagram. (C) 2004 Elsevier B.V. All rights reserved.