Magnetic properties and spin-reorientation transition in DyFe10-xNixSi2 compounds
JOURNAL OF ALLOYS AND COMPOUNDS, vol.400, no.1-2, pp.11-15, 2005 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 400 Issue: 1-2
- Publication Date: 2005
- Doi Number: 10.1016/j.jallcom.2005.03.067
- Journal Name: JOURNAL OF ALLOYS AND COMPOUNDS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.11-15
- Keywords: rare-earth compounds, transition metal compounds, magnetic measurements, RARE-EARTH COMPOUNDS, CRYSTAL-STRUCTURE
- Ankara University Affiliated: No
Abstract
The magnetic properties of DyFe10-xNixSi2 compounds with x = 0, 1, 2, 3,4, 6, 9 and 10 have been investigated by means of X-ray diffraction and magnetic measurements. Substitution of Ni for Fe leads to a decrease in the lattice constants a, c and the unit-cell volume V. The Curie temperature reaches a maximum of 590 K at x = 2, then decreases strongly for x >= 2. The spin reorientations are observed for the compounds with x = 0, 1, 2 and 3. The spin reorientation temperature decreases strongly from 255 to 60 K as the Ni content is increased from x = 0 to 3. Below the spin reorientation temperature, the compounds exhibit ferrimagnetic ordering. For the Ni-rich compounds with x = 9 and 10, the magnetization of the Dy sublattice decreases strongly since the magnetization of the Dy sublattice is strongly affected by the molecular field produced by the 3d sublattice. (c) 2005 Elsevier B.V. All rights reserved.