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Evolution of a magnetic order in the quasi-kagome lattice system CeRh1-xPdxSn (x ≤ 0.75)

Yang, C L ; Umeo, K ; Takabatake, T

Journal of physics. Conference series, 2017-04, Vol.807 (4) [Periódico revisado por pares]

Bristol: IOP Publishing

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  • Título:
    Evolution of a magnetic order in the quasi-kagome lattice system CeRh1-xPdxSn (x ≤ 0.75)
  • Autor: Yang, C L ; Umeo, K ; Takabatake, T
  • Assuntos: Antiferromagnetism ; Conduction bands ; Curie temperature ; Evolution ; Fermi liquids ; Kagome lattice ; Lattice parameters ; Low temperature ; Magnetic permeability ; Magnetism
  • É parte de: Journal of physics. Conference series, 2017-04, Vol.807 (4)
  • Descrição: The equiatomic compound CeRhSn with a quasi-kagome lattice of Ce atoms displays a non-Fermi liquid behavior at low temperatures. We have studied how the ground state changes with the substitution of Pd for Rh in CeRh1-xPdxSn (0 ≤ x ≤ 0.75) by measuring the specific heat C, magnetic susceptibility χ, and magnetization M. With increasing x, the lattice parameters a and c increase by 1.6%, the paramagnetic Curie temperature in χ(T) changes from -112 K to 16 K, and M(B = 5 T) at T = 1.8 K increases from 0.05μB/Ce to 1.4μB/Ce. A long-range magnetic order manifests in sharp peaks in C at 0.7, 1.0 and 1.5 K for x = 0.4, 0.5 and 0.65, respectively. An antiferromagnetic order for x = 0.75 is indicated by the observations of peaks in both χ(T) and C(T) at around 3.0 K and metamagnetic behavior in M(B) at B = 2 T. Our results point out that the doping of 4d electrons in the non-Fermi liquid system CeRhSn destroys the coherence of the quasi-kagome lattice and weakens the hybridization between the 4f state and conduction bands, leading to the evolution of antiferromagnetic order.
  • Editor: Bristol: IOP Publishing
  • Idioma: Inglês
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