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Magnetic field dependence of the antiferromagnetic phase transitions in Co-doped YbRh<sub>2</sub>Si<sub>2</sub>
We present first specific-heat data of the alloy Yb(Rh1−xCox)2Si2 at intermediate Co-contents x = 0.18, 0.27, and 0.68. The results already point to a complex magnetic phase diagram as a function of composition. Co-doping of YbRh2Si2 (Tx = 0N = 72 mK) stabilizes the magnetic phase due to the volume …