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Effect of chemical composition on ground state properties of Ce and Yb intermetallic compounds

M. GIOVANNINI1,2,* , E. BAUER3, G. HILSCHER3, H. MICHOR3, P. ROGL4, A. SACCONE1

Affiliation

  1. Department of Chemistry, University of Genoa, I-16146 Genoa, Italy
  2. LAMIA-INFM-CNR, Corso Perrone 24, I-16152 Genova, Italy
  3. Institute of Solid State Physics, University of Technology, A-1040 Vienna, Austria
  4. Institute of Physical Chemistry, University of Vienna, A-1090 Vienna, Austria

Abstract

The effect of chemical composition on ground state properties of Ce2Pd2In, YbCu4Au and YbCu4Ag, showing more or less extended homogeneity ranges, has been shortly reviewed. The ternary indides Ce2Pd2+2xIn1-x and Ce2+xPd2In1-x form two branches of solid solutions, and the magnetic properties of these compounds are strongly influenced by composition, which drives the system from ferromagnetic to antiferromagnetic behaviour through the stoichiometric point Ce2Pd2In. Similarly, YbCu4Au, which is located along the YbCu5-xAux solid solution, is at the crossover between two kinds of disordered sublattices, and the ground state properties follow a non-monotonic behaviour through the point of crystallographic order YbCu4Au. YbCu4Ag is located at one end point of the YbCu5-xAgx solid solution and the system exhibits a systematic variation of ground state properties along the solid solution..

Keywords

Heavy fermion systems, Crystal chemistry of intermetallics, Rare-earth intermetallics.

Submitted at: April 1, 2008
Accepted at: July 1, 2008

Citation

M. GIOVANNINI, E. BAUER, G. HILSCHER, H. MICHOR, P. ROGL, A. SACCONE, Effect of chemical composition on ground state properties of Ce and Yb intermetallic compounds, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 7, pp. 1595-1600 (2008)