Phase diagram of the PrFeAsO(1-x)Fx superconductor

作者：Rotundu C R^*; Keane D T; Freelon B; Wilson S D; Kim A; Valdivia P N; Bourret Courchesne E; Birgeneau R J

来源：Physical Review B, 2009, 80(14): 144517.

DOI：10.1103/PhysRevB.80.144517

The electronic phase diagram of PrFeAsO1-xFx (0 < x < 0.225) has been determined using synchrotron x-ray powder-diffraction, magnetization, and resistivity measurements. The structural transition temperature is suppressed from 154 to approximate to 120 K and the magnetic phase transitions of both iron and praseodymium ions are completely suppressed by x approximate to 0.08 fluorine doping, coinciding with the emergence of superconductivity. The optimal doping is x approximate to 0.15 when T-C=47 K while the maximum solubility of fluorine in PrFeAsO1-F-x(x) is reached around x=0.22. The structural, magnetic, and superconducting phase diagram is presented.

• 出版日期2009-10