The magnetoresistive behavior of Cr-doped manganites Pr0.44Sr0.56MnO3
arXiv:cond-mat/0212517 · doi:10.1063/1.1556939
Abstract
A complex structural, magnetic and electric transport investigation shows that the Cr doping on Mn sites in the A-type antiferromagnet Pr0.44Sr0.56MnO3 provokes a non-uniform magnetic state with coexisting FM and AFM regions. Irrespective of the ratio of magnetic phases, the samples exhibit a non-metallic behavior of resistivity and thermopower, pointing to the nanoscopic nature of the phase separation. A particularly large magnetoresistance encountered in a broad range of temperatures for samples with Cr doping of 4 - 6 % supports such idea.
This paper has been withdrawn by the authors. J. Appl. Phys. 93, 8083 (2003)