Structures in the System CaTiO3/SrTiO3

✍ Scribed by C.J Ball; B.D Begg; D.J Cookson; G.J Thorogood; E.R Vance

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 313 KB
• Volume: 139
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1998.7836

✦ Synopsis

At room temperature the sequence of phases with increasing amounts of strontium in the system CaTiO 3 /SrTiO 3 is orthorhombic (Pnma), orthorhombic (Bmmb), tetragonal (I4/mcm), and cubic (Pm3m). All phase boundaries shift toward smaller strontium contents with increase of temperature. Volume changes resulting from phase transformations are small for all compositions. Shape changes are greatest (&0.3%) for the Bmmb/I4/mcm transition, but would probably be accommodated by microtwinning and so are unlikely to affect the mechanical integrity of a specimen.