Study of superconductivity and antiferromagnetism in La2-xNdxRh3Si5 system

Patil, N. G. ; Ghosh, K. ; Ramakrishnan, S. (1996) Study of superconductivity and antiferromagnetism in La2-xNdxRh3Si5 system Physica B: Condensed Matter, 223-224 . pp. 392-395. ISSN 0921-4526

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Official URL: http://www.sciencedirect.com/science/article/pii/0...

Related URL: http://dx.doi.org/10.1016/0921-4526(96)00132-9

Abstract

It is well-known that the ternary rare earth silicides of the type R2Fe3Si5 exhibit interesting superconducting and magnetic properties. Unlike R2Fe3Si5 which forms in the tetragonal (space group P4/mnc) structure, R2Fe3Si5 forms in the orthorhombic (Ibram or Iba2) structure. In this work, we establish the bulk superconductivity (Tc = 4.4 K) and bulk antiferromagnetism (TN = 2.7 K) in La2Rh3Si5 and Nd2Rh3Si5, respectively, from resistivity, susceptibility and heat-capacity studies. The heat-capacity data of Nd2Rh3Si5 reveal significant presence of crystal-field contributions. These results are compared with the heat-capacity study of Gd2Rh3Si5 which shows bulk antiferromagnetic ordering below 8.5 K. We have also analyzed the variation of Tc with Nd substitution in the La2-xNdxRh3Si5 system.

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