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Structural and magnetic properties of Gd-Fe-Nb-Zr intermetallic compounds

C. SARAFIDIS1, N. SHELOUDKO2, A. KOTOULAS1, C. SERLETIS1, K. G. EFTHIMIADIS1, M. GJOKA3, O. KALOGIROU1,*

Affiliation

  1. Faculty of Physics, “St. Kl. Ohridski” University of Sofia, 1164-Sofia, Bulgaria
  2. Dept. of Physics, Aristotle University of Thessaloniki, 54 124 Thessaloniki, Greece
  3. NCSR Demokritos, Institute for Materials Science, 153 10 Ag. Paraskevi, Athens, Greece

Abstract

Phase formation as well as the influence of Nb and Zr in the structural and magnetic properties in a series of intermetallic compounds with nominal composition Gd8Fe86Nb6-xZrx (x= 1.5, 3.0, 4.5) were studied. No serious crystallographic effects for the change in stoichiometry were identified. The major phase formed was found to be the hexagonal 2:17 compound. Curie temperature is enhanced compared to that of the parent Gd2Fe17 compound and increases with increasing Nb. Magnetization measurements were analyzed by Sucksmith-Thompson method and the anisotropy field and constants at room temperature and 110 K were calculated..

Keywords

Rare earth iron alloys, R2Fe17, Magnetocrystalline anisotropy.

Submitted at: Aug. 10, 2009
Accepted at: Nov. 19, 2009

Citation

C. SARAFIDIS, N. SHELOUDKO, A. KOTOULAS, C. SERLETIS, K. G. EFTHIMIADIS, M. GJOKA, O. KALOGIROU, Structural and magnetic properties of Gd-Fe-Nb-Zr intermetallic compounds, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 11, pp. 1576-1580 (2009)