Studies on Monovalent Doped Mixed Valent Microstructral Manganites

Mixed valence manganites with the perovskite structure have been studied for almost 50 years. The system offers a degree of chemical flexibility which permits the relation between the oxides structure, electronic and magnetic properties to be examined in a systematic way. Mixed valent functional oxides have been recently receiving increasing attention due to their potential for practical applications, such as non-volatile memory devices, magnetic tunnel junctions, switching devices, p-n junctions, capacitors, etc. Monovalent doped lanthanum manganites, possess relatively high TP and TC as well as large MR values near room temperature, which is useful for practical applications.