Solid State Ionics, Vol.101-103, 559-563, 1997
Giant magnetoresistance and related properties of rare earth manganates and related systems
Rare earth manganates of the formula Ln(1-x)A(x)MnO(3) become ferromagnetic and undergo an insulator-metal transition around the Curie temperature, T-c, when the Mn4+ content is around 30%. These materials also show GMR especially around T-c. Various features affecting GMR in these materials and certain novel features such as charge-ordering exhibited by manganates are discussed.
Keywords:INSULATOR-METAL TRANSITION;DOUBLE EXCHANGE;MAGNETIC-FIELD;DOPED LAMNO3;CHARGE;LA1-XSRXMNO3;RESISTIVITY;PRESSURE