Coexistence of Superconductivity and Ferromagnetism in P-doped EuFe2As2
  The magnetic structure of the Eu2+ moments in the superconducting EuFe2(As1-xPx)2 sample with x = 0.15 has been determined using element specific x-ray resonant magnetic scattering. Combining magnetic, thermodynamic and scattering measurements, we conclude that the long range ferromagnetic order of the Eu2+ moments aligned primarily along the c axis coexists with the bulk superconductivity at zero field. At an applied magnetic field >= 0.6 T, superconductivity still coexists with the ferromagnetic Eu2+ moments which are polarized along the field direction. We propose a spontaneous vortex state for the coexistence of superconductivity and ferromagnetism in EuFe2(As0.85P0.15)2. 
S. Nandi, W. T. Jin, Y. Xiao, Y. Su, S. Price, D. K. Shukla, J.   Strempfer, H. S. Jeevan, P. Gegenwart, and Th. Br\"uckel
cond-mat.supr-con