Resistivity and AC calorimetry measurements on CeNiGe2 under pressure

A.T. Holmes, T. Muramatsu, A. Miyake, D. Kaczorowski, T. Kagayama, K. Shimizu, Z. Bukowski

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2 Citations (Scopus)


We present resistivity and AC calorimetry measurements of single crystalline CeNiGe2 under high pressure and low temperature in a diamond anvil cell. CeNiGe2 is a highly anisotropic, antiferromagnetic Kondo system at ambient pressure, located close to the boundary with non-magnetic systems. It has two ordering temperatures, T = 3.9 K and T = 3.2 K, which are suppressed under pressure. Between 0.7 and 1.4 GPa only a single transition was identified, with T reaching 1.9 K by 1.4 GPa. At 1.9 GPa two transitions could again be seen by AC calorimetry at 2.0 and 1.3 K, accompanied by a qualitative change in the behaviour of the resistivity. The Sommerfeld coefficient showed a maximum of 755 mJ mol K at 1.4 GPa, up from 448 mJ mol K at close to ambient pressure. The residual resistivity was found to decrease sharply above 1.4 GPa after an initial increase with pressure.
Original languageEnglish
Pages (from-to)343-345
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Issue number2 SUPPL. PART 1
Publication statusPublished - 1 Mar 2007


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