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The ferromagnetic Kondo-lattice compound SmFe4P12

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Published 31 March 2003 • Published under licence by IOP Publishing Ltd
, , Citation Naoya Takeda and Masayasu Ishikawa 2003 J. Phys.: Condens. Matter 15 L229 DOI 10.1088/0953-8984/15/14/101

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1 Institute for Solid State Physics, University of Tokyo, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan

Dates

  1. Received 10 February 2003
  2. Published

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0953-8984/15/14/L229

Abstract

We report on the magnetic properties of a filled skutterudite compound, SmFe4P12. Magnetic susceptibility and specific heat measurements revealed a ferromagnetic transition at 1.6 K. The temperature dependence of the electrical resistivity exhibits a Kondo-lattice behaviour and the electronic specific heat coefficient attains values as large as 370 mJ mol−1  K−2. This compound is thereby the first Sm-based heavy-fermion system found with a ferromagnetic ground state. The Kondo temperature is estimated to be about 30 K.

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10.1088/0953-8984/15/14/101