Magnetic properties of Sm 1-xTb xNi 4B compounds

NANE O., ÖZÇELİK B., Kervan S., Topal U.

Journal of Superconductivity and Novel Magnetism, vol.25, no.4, pp.1065-1070, 2012 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 4
  • Publication Date: 2012
  • Doi Number: 10.1007/s10948-011-1361-8
  • Journal Name: Journal of Superconductivity and Novel Magnetism
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1065-1070
  • Keywords: Ac-Susceptibility, Dc-Magnetization, Magnetic materials, Magnetic properties, X-ray diffraction
  • Hakkari University Affiliated: Yes

Abstract

Physical properties of the Sm 1-xTb xNi 4B (0 ≤ x ≤ 0.8) compounds have been investigated by means of the X-ray powder diffraction, AC-susceptibility and DC-magnetization techniques. All the compounds studied crystallize in CeCo4B-type structure with P6/mmm space group. The substitution of Tb for Sm leads to a decrease of the unit-cell parameters a, c and the unit-cell volume V. The magnetic phase transition temperatures are found as 39, 30, 26, 22 and 15 K, for x = 0, 0.2, 0.4, 0.6 and 0.8, respectively. In addition, we have seen the second magnetic phase transition around 230 K, at the ac-susceptibility results. We have concluded that this behavior may arise from the Tb-Tb interaction in crystal structure. © 2012 Springer Science+Business Media, LLC.