Antiferromagnetic transitions in the Kondo lattice systemCe2Ni3Ge | Zendy

Z. Hossain | Zendy; Syunsuke Hamashima | Zendy; Kazunori Umeo | Zendy; T. Takabatake | Zendy; C. Geibel | Zendy; F. Steglich | Zendy

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Antiferromagnetic transitions in the Kondo lattice systemCe2Ni3Ge<…

Author(s) -

Z. Hossain,

Syunsuke Hamashima,

Kazunori Umeo,

T. Takabatake,

C. Geibel,

F. Steglich

Publication year - 2000

Publication title -

physical review. b, condensed matter

Language(s) - English

Resource type - Journals

eISSN - 1095-3795

pISSN - 0163-1829

DOI - 10.1103/physrevb.62.8950

Subject(s) - antiferromagnetism , condensed matter physics , magnetization , physics , specific heat , magnetoresistance , heat capacity , electrical resistivity and conductivity , materials science , magnetic field , thermodynamics , quantum mechanics

Our investigation of ${\mathrm{Ce}}_{2}{\mathrm{Ni}}_{3}{\mathrm{Ge}}_{5}$ by means of transport, specific heat and magnetization measurements shows that the compound is a Kondo lattice system exhibiting two antiferromagnetic transitions at ${T}_{N1}=5.1\mathrm{K}$ and ${T}_{N2}=4.5\mathrm{K}.$ An analysis of the transport and specific heat data suggests that the Kondo energy scale ${k}_{B}{T}_{K}$ is of the order of ${k}_{B}{T}_{N}.$ The resistivity and heat capacity data below 4 K are suggestive of the appearance of a spin-wave gap. The compound exhibits giant magnetoresistance at low temperature. The crystal field splitting is estimated to be about 180 K.

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