Phase diagram of the NdFe1-xRhxAsO superconductor - Condensed Matter > SuperconductivityReport as inadecuate




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Abstract: Polycrystalline samples with a nominal composition of NdFe1-xRhxAsO 0 <= x<= 0.25 were synthesized using a solid state reaction method. Bulksuperconductivity with a maximum Tc = 13 K is observed in the x = 0.1 sample. Atemperature-composition phase diagram is established for the NdFe1-xRhxAsOsystem based on the electrical resistivity and magnetization measurements. Afirst-order-like transition from an antiferromagnetic state to thesuperconducting state at a critical Rh-doping point xc = 0.045 is observed inthe present phase diagram. The value for the upper critical field Hc20 isestimated to be about 26 T for the x = 0.10 sample by using the WHH theory.



Author: H. Y. Shi, X. L. Wang, T.-L. Xia, Q. M. Zhang, X. Q. Wang, T.-S. Zhao

Source: https://arxiv.org/







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