Magnetic phase transitions in the CeMn2-xFexGe2 compounds
SOLID STATE COMMUNICATIONS, vol.132, no.1, pp.31-35, 2004 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 132 Issue: 1
- Publication Date: 2004
- Doi Number: 10.1016/j.ssc.2004.07.016
- Journal Name: SOLID STATE COMMUNICATIONS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.31-35
- Keywords: rare earth compounds, transition metal compounds, magnetic sublattices, phase transitions, NEUTRON-DIFFRACTION, SILICIDES, BEHAVIOR, CU, MN
- Ankara University Affiliated: No
Abstract
The crystal structure and magnetic properties of CeMn2-xFexGe2(0less than or equal toxless than or equal to1.0) were studied by X-ray powder diffraction and DC magnetization measurements. All the compounds crystallize in ThCr2Si2-type structure. Substitution of Fe for Mn led to a decrease in the unit cell parameters and the unit-cell volume, whereas c/a exhibits parabolic variations. For the samples with x = 0.625 and 0.65, the SmMn2Ge2-like magnetic behavior was observed. The results of earlier neutron and Mossbauer studies in CeMn2Ge2 were also used for interpreting the magnetization data and to give an account of the competing effects between various magnetic structures in the Mn sublattice. The results are summarized in a preliminary magnetic phase diagram. (C) 2004 Elsevier Ltd. All rights reserved.