Effects of Er substitiution for Nd on structural and magnetic properties of Nd1-xErxMn2Ge2 (0 <= x <= 1)
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol.280, no.1, pp.44-50, 2004 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 280 Issue: 1
- Publication Date: 2004
- Doi Number: 10.1016/j.jmmm.2004.02.021
- Journal Name: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.44-50
- Keywords: rare earth compounds, transition metal compounds, magnetic measurements, magnetic phase transition, NEUTRON-DIFFRACTION, PHASE-TRANSITIONS, NDMN2GE2
- Ankara University Affiliated: No
Abstract
The structure and magnetic properties of Nd1-xErxMn2Ge2 (0.0 less than or equal to x less than or equal to 1) were studied by X-ray powder diffraction and magnetization measurements. All compounds crystallize in the ThCr2Si2-type structure with space group I4/mmm. Substitution of Er for Nd led to a linear decrease in the lattice constants and the unit cell volume. Increasing substitution of Er for Nd in NdMn2Ge2 shows a depression of ferromagnetic ordering and the gradual development of anti ferromagnetic ordering. A typical SmMn2Ge2-like behaviour is observed for the x = 0.4 sample. The results are summarized in a preliminary magnetic phase diagram. (C) 2004 Elsevier B.V. All rights reserved.