Abstract
We report temperature-dependent ac susceptibility $(\ensuremath{\chi})$ measurements on a high-quality single crystal of ${\mathrm{Tb}}_{2}{\mathrm{PdSi}}_{3},$ crystallizing in a ${\mathrm{AlB}}_{2}$-derived hexagonal structure. This compound is found to exhibit features attributable to quasi-low-dimensional magnetism at high temperatures and anisotropic spin-glass-like behavior at low temperatures $(<10\mathrm{K})$ with an unusually large frequency dependence of peak temperature in ac $\ensuremath{\chi}(T).$ This compound thus presents a novel situation in metallic magnetism, considering that the former phenomenon is normally encountered only among insulators, whereas the anisotropic spin-glass-like behavior, to our knowledge, has not been known in stoichiometric intermetallic compounds.
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