Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1805256 | Journal of Magnetism and Magnetic Materials | 2006 | 6 Pages |
Abstract
The structural and magnetic properties of Nd1âxTbxFe10.5Mo1.5 (x=0, 0.2, 0.4, 0.6, 0.8, 1.0) compounds have been investigated by means of X-ray diffraction and magnetic measurements. All the investigated compounds crystallize in the tetragonal ThMn12-type structure with I4/mmm space group. The lattice parameters a, c and the unit-cell volume V decrease with increasing x. The Curie temperatures TC are almost independent x. There exists a unique spin-reorientation transition for the end compositions of Nd1âxTbxFe10.5Mo1.5 compounds with x=0 and x=1, while two spin-reorientation transitions are observed for x=0.2-0.8. The room-temperature magnetocrystalline anisotropy of Nd1âxTbxFe10.5Mo1.5 compounds changes from uniaxial to planar with increasing x content. Based on magnetic measurements, a magnetic phase diagram of Nd1âxTbxFe10.5Mo1.5 compounds is constructed. By minimizing the magnetocrystalline anisotropy energy, a theoretical magnetic phase diagram for the Nd1âxTbxFe10.5Mo1.5 system is derived, showing a reasonable agreement with the observations.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Y.G. Xiao, G.H. Rao, Q. Zhang, G.Y. Liu, Y. Zhang, J.K. Liang,