Effects of lattice distortion and Jahn – Teller coupling on the magnetoresistance of La 0 . 7 Ca 0 . 3 MnO 3 and La 0 . 5 Ca 0 . 5 CoO 3 epitaxial films

Studies of La0.7Ca0.3MnO3 epitaxial films on substrates with a range of lattice constants reveal two dominant contributions to the occurrence of colossal negative magnetoresistance (CMR) in these manganites: at high temperatures (T → TC , TC being the Curie temperature), the magnetotransport properties are predominantly determined by the conduction of… CONTINUE READING