Room temperature giant magnetoresistance in La1-xPbxMnO3

Abstract
Oxides of the La1-xPbxMnO3 system show giant magnetoresistance around 300 K. In La1-xPbxMnO3 the magnitude of the magnetoresistance (MR) at 320 K is 85% at 6 T and it is nearly temperature independent over a temperature range 40-320 K. All the compositions (0.13 in order to achieve maximum MR around 300 K so that these materials can have practical applications.