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|Type:||Artigo de Periódico|
|Title:||Unusual Kondo-hole Effect And Crystal-field Frustration In Nd-doped Cerhin5|
|Abstract:||We investigate single crystals of Ce1-xNdxRhIn5 by means of x-ray-diffraction, microprobe, magnetic susceptibility, heat capacity, and electrical resistivity measurements. Our data reveal that the antiferromagnetic transition of CeRhIn5, at T-N(Ce) = 3.8 K, is linearly suppressed with x(Nd). We associate this effect with the presence of a "Kondo hole" created by Nd substitution. The extrapolation of T-N(Ce) to zero temperature, however, occurs at x(c) similar to 0.3, which is below the two-dimensional percolation limit found in Ce1-xLaxRhIn5. This result strongly suggests the presence of a crystal-field induced magnetic frustration. Near x(Nd) similar to 0.2, the Ising antiferromagnetic order from Nd3+ ions is stabilized and T-N(Nd) increases up to 11 K in NdRhIn5. Our results shed light on the effects of magnetic doping in heavy-fermion antiferromagnets and stimulate the study of such systems under applied pressure.|
|Editor:||AMER PHYSICAL SOC|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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