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arXiv · 0708.1170

Magnetic properties of Gd_xY_{1-x}Fe_2Zn_{20}: dilute, large, $\textbf {S}$ moments in a nearly ferromagnetic Fermi liquid

S. Jia·Ni Ni·S. L. Bud'ko·P. C. Canfield
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Abstract

Single crystals of the dilute, rare earth bearing, pseudo-ternary series, Gd_xY_{1-x}Fe_2Zn_{20} were grown out of Zn-rich solution. Measurements of magnetization, resistivity and heat capacity on Gd_xY_{1-x}Fe_2Zn_{20} samples reveal ferromagnetic order of Gd^{3+} local moments across virtually the whole series ($x \geq 0.02$). The magnetic properties of this series, including the ferromagnetic ordering, the reduced saturated moments at base temperature, the deviation of the susceptibilities from Curie-Weiss law and the anomalies in the resistivity, are understood within the frame work of dilute, $\textbf {S}$ moments (Gd^{3+}) embedded in a nearly ferromagnetic Fermi liquid (YFe_2Zn_{20}). The s-d model is employed to further explain the variation of $T_{\mathrm{C}}$ with x as well as the temperature dependences of of the susceptibilities.

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S. Jia, Ni Ni, S. L. Bud'ko, P. C. Canfield. 2007-08-08. Magnetic properties of Gd_xY_{1-x}Fe_2Zn_{20}: dilute, large, $\textbf {S}$ moments in a nearly ferromagnetic Fermi liquid. https://doi.org/10.1103/physrevb.76.184410

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