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】
Free