Ferromagnetic order in U(Rh,Co)Ge

Details Ferromagnetic order in U(Rh,Co)Ge Ferromagnetic order in U(Rh,Co)Ge

2009-02-05

arxiv.org/abs/0902.0974v1

Solid State Comm. 149 (2009) 703-706.

Physics

Condensed Matter

Strongly Correlated Electrons

12 pages (4 figures), submitted to SSC

Scientific paper

10.1016/j.ssc.2009.02.013

We report the variation of ferromagnetic order in the pseudo-ternary compounds URh_{1-x}Co_{x}Ge (0 \leq x \leq 1). Magnetization and transport data taken on polycrystalline samples show that the Curie temperature T_{C} 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 < T_{C} follows the behaviour \rho = \rho_{0} + AT^2. The A coefficient is dominated by scattering at spin waves and is strongly enhanced for x = 0 and 1.

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