Magnetic properties and thermal expansion of YbGa$_x$Ge$_{2-x}$ (0.9 <= x <= 1.5)

N. Tsujii; T. Furubayashi; H. Kitazawa; G. Kido

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Magnetic properties and thermal expansion of YbGa$_x$Ge$_{2-x}$ (0.9 <= x <= 1.5)

N. Tsujii·T. Furubayashi·H. Kitazawa·G. Kido

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Abstract

The composition dependence of the Yb valence and of the thermal expansion have been studied in the YbGa$_x$Ge$_{2-x}$ system. X-ray diffraction reveals that single-phased samples isostructural to YbGaGe are obtained in the range of 0.9 <= x <= 1.5. The magnetic susceptibility shows that the systems are almost nonmagnetic below room temperature, indicating a stable Yb2+ state for the x range 0.9 <= x <= 1.5. The lattice constants as well as the lattice volume of these systems are found to decrease monotonically with decreasing temperature, suggesting the absence of zero thermal-expansion previously reported for YbGaGe.

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N. Tsujii, T. Furubayashi, H. Kitazawa, G. Kido. 2004-10-01. Magnetic properties and thermal expansion of YbGa$_x$Ge$_{2-x}$ (0.9 <= x <= 1.5). https://arxiv.org/abs/cond-mat/0410007

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