Physical and magnetic properties of Ba(Fe$_{1-x}$Mn$_x$)$_2$As$_2$ single crystals*

Single crystals of Ba(Fe$_{1-x}$Mn$_x$)$_2$As$_2$, $00.10$, a similar transition is observed which broadens and trends upward in temperature with increasing doping level. Superconductivity is not observed at any doping level for $T>1.85K$. Phase diagrams of temperature versus doping level based on electrical transport and magnetization measurements will be presented and compared to those of the Ba(Fe$_{1-x}$TM$_x$)$_2$As$_2$ (TM=Cr, Co, Ni, Cu) series.