R. Mahesh et al., GIANT MAGNETORESISTANCE AND RELATED PROPERTIES OF RARE-EARTH MANGANATES AND RELATED SYSTEMS, Solid state ionics, 101, 1997, pp. 559-563
Rare earth manganates of the formula Ln(1-x)A(x)MnO(3) become ferromag
netic and undergo an insulator-metal transition around the Curie tempe
rature, T-c, when the Mn4+ content is around 30%. These materials also
show GMR especially around T-c. Various features affecting GMR in the
se materials and certain novel features such as charge-ordering exhibi
ted by manganates are discussed.