
%0 Journal Article
%A Hester, J. R. 
%A Howard, C. J. 
%A Kennedy, B. J. 
%A Macquart, R. 
%T High-Temperature Structural Studies of SrPbO<emph type="8">3</emph> and BaPbO<emph type="8">3</emph>
%J Australian Journal of Chemistry
%D 2002/10/11
%V 55
%N 8
%P 543-545
%K 
%R https://doi.org/10.1071/CH02023
%U https://www.publish.csiro.au/paper/CH02023 
%X High-resolution X-ray powder diffraction studies have shown BaPbO3 to transform from an orthorhombic Imma structure at room temperature, through an intermediate I4/mcm phase, to a cubic Pm3&#8211;mstructure above 500°C. The Imma to I4/mcm transition is first order and the I4/mcm&#8211;Pm3&#8211;m transition for BaPbO3 is tricritical in nature. We find no evidence for any phase transitions in SrPbO3 up to 760°C, the structure remaining in Pnma from room temperature to 760°C. 
