In situ X-ray diffraction study of Pr(2-x)CaxNiO4 at low oxygen pressure
- Zakhar VINOKUROV
- Zakhar VINOKUROV (BIC SB RAS)
This work was aimed at structural studies of mixed oxygen–electron conducting Pr(2-x)CaxNiO4(x=0.1-0.6) oxides synthesized by by the coprecipitation method with the final sintering temperature of 1150-1250C. Structural changes of samples during heating in the excess/lack of oxygen were characterized by X-ray diffraction (XRD) method using synchrotron radiation. The heating rate and temperature range were 10C/min and from room temperature up to 900C, respectively. We also performed the thermogravimetric experiments in similar conditions to the connect the phase transformations with the sample oxygen loss. The synchrotron XRD studies were performed using the infrastructure of the Shared-Use Center "Siberian Synchrotron and Terahertz Radiation Center(SSTRC)" based on VEPP-3 of BINP SB RAS.