Combined Magnetic Phase Diagram of Cation- and Anion- doped Lanthanum Cuprates

We have studied doping dependences of antiferromagnetic (AF) transition temperature$ T_{N}$ in La$_{2}$CuO$_{4+\delta }$for 0 $< \quad \delta <$ 0.01. For $\delta <$ 0.005, we have observed and stabilized a weak ferromagnetic-like anomaly that appears right before $T_{N}$. The suppression of $T_{N}$ due to doped holes is identical to that in La$_{2-x}$Sr$_{x}$CuO$_{4}$ for 0$<$ x $<$ 0.01. For $\delta \quad >$ 0.005, we observed a phase separation into a $T_{N }\sim $ 250K AF phase and T$_{c}$ $\sim $ 30K superconducting phase. Comparing the magnetic phase diagrams of both cation (Sr)- and Anion (O)- doped lanthanum cuprates we conclude that the dopant effects are very important and should be included in the interpretation of any data above 1{\%} doping level. We present a unified ``intrinsic'' magnetic phase diagram of doped cuprates.