Evolution of the Magnetic and Electrical Properties in the Ce-Co-Ge System

Abstract:

Among the 10 phases reported to exist at 973 K in the Ce-Co-Ge ternary system, a strong dependence of the magnetic and transport properties on the constituent concentration has been evidenced. Close to the Ce-Ge binary axis, the ternary phases exhibit ferromagnetic-like ordering with low TC, while increasing the cobalt concentration leads first to a paramagnetic area, then to an antiferromagnetic one and finally to ferromagnetism with high TC for cobalt and Co-rich binaries. Similarly, electrical resistivity and thermopower measurements evidence a rather metallic behavior for cerium poor phases while an increase in the Ce-content results in an increase of the Kondo-like interactions.

• Periodical: Solid State Phenomena (Volume 194)
• Pages: 80-83
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.194.80
• Online since: November 2012
• Authors: Mathieu Pasturel, Adam Pikul, Piotr Wisniewski, Houda El Bekkachi, Arnaud Soudé, Olivier Tougait, Henri Noël
• Keywords: Cerium, Ferromagnetism, Germanides, Kondo-Effect

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