Effect of Cr-doping on charge ordering stability in Bi1-xSrxMn1-yCryO3Bi1-xSrxMn1-yCryO3

The effect of Cr-doping on electrical and magnetic properties of high-temperature charge-ordered manganites (Bi1-xSrxMn1-yCryO3Bi1-xSrxMn1-yCryO3, where x=0.25,0.3,0.4x=0.25,0.3,0.4; 0⩽y⩽0.10⩽y⩽0.1) was investigated. Without Cr-doping, a charge disorder-to-order transition (TcoTco) and antiferromagnetic phase transition (TNTN) were observed near 500 and 150 K, respectively. The charge-order phase transition broadened, but did not disappear upon Cr-doping up to y=0.1y=0.1. 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 Pr1-xCaxMn1-yCryO3Pr1-xCaxMn1-yCryO3.

Graphical AbstractTemperature dependence of Bi0.6Sr0.4Mn1-yCryO3Bi0.6Sr0.4Mn1-yCryO3 (y = 0, 0.1). The abbreviation ‘f.u.’ denotes the formula unit.?TcoTco and ThTh are represented kinks or anomalies that involve hysteresis, respectively.Figure optionsDownload as PowerPoint slide