Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9837575 | Physica B: Condensed Matter | 2005 | 7 Pages |
Abstract
The crystal structure and magnetic properties of (NdxR1âx)3Fe24Cr5 (R=Gd and Tb) compounds with x=0.0-0.8 have been investigated by means of X-ray diffraction and magnetic measurements. All the samples are single phase and crystallize in the Nd3(Fe,Ti)29-type structure with space group A2/m. As the Nd content increases, the lattice parameters a, b, c and the unit-cell volume V increase in both the (NdxGd1âx)3Fe24Cr5 and the (NdxTb1âx)3Fe24Cr5 compounds due to the lanthanide contraction. The room-temperature easy magnetization direction changes to the [0Â 4Â 0] direction with increasing Nd content. The Curie temperature of (NdxGd1âx)3Fe24Cr5 decreases monotonically upon substitution of Nd for Gd, while the Curie temperature of the (NdxTb1âx)3Fe24Cr5 compounds decreases with the Nd content for x=0-0.4 and increases for x=0.4-0.8. The saturation magnetization MS increases monotonically with increasing Nd content for both compound systems and can be described in terms of a simple dilution model.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Y.G. Xiao, G.H. Rao, W.F. Liu, Z.W. Ouyang, Q. Zhang, G.Y. Liu, J.K. Liang,