Effect of Cr-doping on charge ordering stability in image

The effect of Cr-doping on electrical and magnetic properties of high-temperature charge-ordered manganites (image, where image; image) was investigated. Without Cr-doping, a charge disorder-to-order transition (image) and antiferromagnetic phase transition (image) were observed near 500 and 150 K, respectively. The charge-order phase transition broadened, but did not disappear upon Cr-doping up to image. The antiferromagnetic phase disappeared upon 10% Cr-doping, transforming into a paramagnetic phase, rather than into a double exchange ferromagnetic metal, in contrast to the case of image.