EPR investigation of local structure for the [Mn(H2O)6]2+ cluster in M(ClO4)2 · 6H2O:Mn2+ (M = Cd, Hg) systems at different temperaturesJu-Fen Li, Xiao-Yu Kuang, Bin Tang and Qiang LuoEur. Phys. J. Appl. Phys., 71 3 (2015) 30601DOI: https://doi.org/10.1051/epjap/2015140349