Competing magnetic interactions in Dy1-xSmxFe10Si2 compounds

Yucel A., Elmali A., Cakir R., Elerman Y.

SOLID STATE COMMUNICATIONS, vol.135, no.11-12, pp.745-748, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 135 Issue: 11-12
  • Publication Date: 2005
  • Doi Number: 10.1016/j.ssc.2005.05.020
  • Journal Name: SOLID STATE COMMUNICATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.745-748
  • Keywords: magnetically ordered materials, magnetic phase transitions, R-T exchange interaction, spin reorientation temperature
  • Ankara University Affiliated: No

Abstract

The spin reorientation temperatures of Dy1-x SmxFe10Si2 compounds with x=0, 0.1, 0.2, 0.3, 0.4, 0.6 and 1.0 were investigated using dc magnetization measurements in the temperature range from 5 to 350 K. The spin reorientation (SR) temperature was observed to drop gradually from 255 to 52 K as Sm content was increased from x=0 to 0.4. No SR temperature was observed for x > 0.4. Magnetization measurements using vibrating sample magnetometry (VSM) were carried out from room temperature to 650 K to determine the dependence of the Curie temperature on Sm content. The Curie temperatures shifted to higher values as the Sm content was increased. X-ray powder diffraction studies revealed that the substitution of Sm for Dy leads to an increase in the lattice parameter a and the unit cell volume V while the lattice parameter c remained constant. (C) 2005 Elsevier Ltd. All rights reserved.