Ferromagnetic order in U(Rh,Co)Ge
Abstract
We report the variation of ferromagnetic order in the pseudo-ternary compounds URh1-xCoxGe (0 ≤ x ≤ 1). Magnetization and transport data taken on polycrystalline samples show that the Curie temperature TC gradually increases with increasing Co content from a value of 9.5 K for URhGe to a maximum value of 20 K for x = 0.6 and then steadily decreases to 3 K for UCoGe. The magnetic interaction strength varies smoothly across the series. For all samples the electrical resistivity for T < TC follows the behaviour = 0 + AT2. The A coefficient is dominated by scattering at spin waves and is strongly enhanced for x = 0 and 1.
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