Magnetocaloric effect in spin-glass-like GdCu4Mn compound
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Dataset for: Magnetocaloric effect in spin-glass-like GdCu<sub>4</sub>Mn compound Materials based on Gd with magnetic frustration may have high magnetocaloric application potential. GdCu<sub>4</sub>Mn crystallizes in hexagonal CaCu<sub>5</sub>-type structure with space group <em>P</em>6/<em>mmm</em> (no. 191, Pearson symbol: <em>hP</em>6). Lattice parameters for the polycrystalline sample are equal to <em>a</em> = 5.114(3) Å and <em>c</em> = 4.151(4) Å. Due to structural disorder, namely random distribution of Cu and Mn atoms on 2<em>c</em> and 3<em>g</em> positions, a spin-glass-like behavior is observed in this material at low temperatures. In addition to the standard measurements of DC magnetization and AC magnetic susceptibility, the spin-glass state was confirmed by the memory effect and relaxation behavior. The absence of clear anomalies in the temperature dependencies of specific heat and electrical resistance suggests the lack of long-range magnetic order.
