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C R Rotundu and B Andraka. La-alloying study of CeCoGe2: Magnetic susceptibility and specific heat measurements. Physical Review B, 74, p. 224423, 2006.

Abstract: We report measurements of magnetic susceptibility and specific heat for polycrystalline Ce1-xLaxCoGe2 for
x=0, 0.1, 0.2, 0.3, 0.5, and 1. CeCoGe2 is considered as a concentrated J=5/2 Kondo system. We have found
significant preferential orientation in the magnetic susceptibility implying magnetic anisotropy. Magnetic susceptibility
and specific heat results do not corroborate the single impurity model and imply the importance of
crystalline electric fields and magnetic correlations. Low-temperature specific heat and susceptibility data for
x=0.2 suggest a possibility of a two-dimensional antiferromagnetic quantum critical point.

Keywords: heavy fermion

URL: http://prola.aps.org/searchabstract/PRB/v74/i22/e224423?qid=263cf67679655e0c&qseq=1&show=25

Posted by Costel R Rotundu

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