Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/242856
Type: Artigo de periódico
Title: Role Of Dimensionality In The Kondo Cet X-2 Family: The Case Of Cecd0.7sb2
Author: Rosa
P. F. S.; Bourg
R. J.; Jesus
C. B. R.; Pagliuso
P. G.; Fisk
Z.
Abstract: Motivated by the presence of competing magnetic interactions in the heavy fermion family CeT X-2 (T = transition metal, X = pnictogen), here we study the novel parent compound CeCd0.7Sb2 by combining magnetization, electrical resistivity, and heat-capacity measurements. Contrary to the antiferromagnetic (AFM) ground state observed in most members of this family, the magnetic properties of our CeCd0.7Sb2 single crystals revealed a ferromagnetic ordering at T-c = 3 K with an unusual soft behavior. By using a mean field model including anisotropic nearest-neighbor interactions and the tetragonal crystalline electric field (CEF) Hamiltonian, a systematic analysis of our macroscopic data was obtained. Our fits allowed us to extract a simple but very distinct CEF scheme, as compared to the AFM counterparts. As in the previously studied ferromagnet CeAgSb2, a pure vertical bar +/- 1/2 > ground state is realized, hinting at a general trend within the ferromagnetic members. More generally, we propose a scenario for the understanding of the magnetism in this family of compounds based on the subtle changes of dimensionality in the crystal structure.
Subject: Magnetic-properties
La-nd
Superconductivity
Gd
Sm
Transport
Pressure
Ceagsb2
Ag
Cu
Country: COLLEGE PK
Editor: AMER PHYSICAL SOC
Citation: Role Of Dimensionality In The Kondo Cet X-2 Family: The Case Of Cecd0.7sb2. Amer Physical Soc, v. 92, p. OCT-2015.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.92.134421
Address: http://journals.aps.org/prb/abstract/10.1103/PhysRevB.92.134421
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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