77Se NMR Investigation of the K(x)Fe(2-y)Se(2) High Tc Superconductor   (Tc=33K)
  We report a comprehensive 77Se NMR study of the structural, magnetic, and superconducting properties of a single crystalline sample of the newly discovered FeSe-based high temperature superconductor K(x)Fe(2-y)Se(2) (Tc=33K) in a broad temperature range up to 290 K. We will compare our results with those reported for FeSe (Tc=9K) and FeAs-based high Tc systems. 
D. A. Torchetti, M. Fu, D. C. Christensen, K. J. Nelson, T. Imai, H.   C. Lei, and C. Petrovic
cond-mat.supr-con cond-mat.str-el