Ca0.85Sm0.15MnO3: A mixed antiferromagnet with unusual properties
  We investigated electrical and magnetic properties of the electron-doped manganites Ca1-xSmxMnO3 (0<x<0.2). Our results indicate the possibility of phase separation in electron doped manganites. The compounds with x = 0.13-0.15 show unusual difference between zero-field cooled and field-cooled resistivities which are not observed in lower compositions. Our results suggest that electronic phase separation alone is insufficient to understand the origin of the resistivity irreversibilities. 
R. Mahendiran, A. Maignan, C. Martin, M. Hervieu, and B. Raveau