Single-crystal neutron diffraction study of short-range magnetic correlations in Tb5Ge4

Article

关键词: REFRIGERATION;    BEHAVIOR;    ALLOYS;   

DOI  :  10.1103/PhysRevB.80.134422

来源: SCIE

【 摘 要 】

We present a single-crystal neutron diffraction study of the magnetic short-range correlations in Tb5Ge4 which orders antiferromagnetically below the Neel temperature T-N approximate to 92 K. Strong diffuse scattering arising from magnetic short-range correlations was observed in wide temperature ranges both below and above T-N. The antiferromagnetic ordering in Tb5Ge4 is described to consist of strongly coupled ferromagnetic block layers in the ac plane that stack along the b axis with weak antiferromagnetic interlayer coupling. Diffuse scattering was observed along both a* and b* directions indicating three-dimensional short-range correlations. Moreover, the q dependence of the diffuse scattering is Squared Lorentzian in form suggesting a strongly clustered magnetic state that may be related to the proposed Griffiths-like phase in Gd5Ge4.

【 授权许可】

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