Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8000454 | Journal of Alloys and Compounds | 2015 | 5 Pages |
Abstract
A possible classical to quantum transition has been demonstrated by the mixing effects of Gd and Nd in spin-chain compounds Gd2âxNdxBaNiO5. First, the M(T) curves for the Gd-rich compounds exhibit a monotonous increase with decreasing temperature whereas those for the Nd-rich compounds consist of a maximum and minimum structure due to the Gd/Nd and Ni excitations. Second, the 1/Ï(T) curves for the Gd-rich compounds demonstrate Curie-Weiss-like behavior, which is absent for the Nd-rich side. It is therefore concluded that the Gd-rich compounds behave totally like classical magnets while the Nd-rich compounds quantum magnets. The enhanced magnetic anisotropy due to the Nd doping is proposed to be responsible for this classical-quantum transition.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Y.M. Guo, Z.W. Ouyang, M.Y. Ruan, J.J. Cheng, Y.C. Sun, Z.C. Xia, G.H. Rao,