The main purpose of this book is to introduce the phenomenon and physics of complex magnetism (phase separation, spin glass, frustrations, etc.) in perovskite manganites and cobaltites via an experimental approach.

The gives an introduction to magnetic perovskites and describes the results of the investigations on electronic phase separation and glassy ferromagnetism of the hole-doped perovskite manganites and cobaltites. The book also discusses ordered and disordered effects and related aspects in hole-doped perovskite cobaltites and bismuth based magnetic perovskites.