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Structural Characterization of the Perovskite Series La1−xSrxCr1−xTixO3

✍ Scribed by B.J. Kennedy; C.J. Howard; G.J. Thorogood; M.A.T. Mestre; J.R. Hester

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
98 KB
Volume
155
Category
Article
ISSN
0022-4596

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✦ Synopsis

The perovskite-type compounds La 1؊x Sr x Cr 1؊x Ti x O 3 , x ‫؍‬ 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, have been synthesized by alkoxide methods, and the room temperature structures characterized using X-ray synchrotron powder di4raction. The x ‫؍‬ 0 endmember, LaCrO 3 , and the x ‫؍‬ 0.1 compound are orthorhombic in space group Pbnm, the compounds with x ‫؍‬ 0.2 to x ‫؍‬ 0.7 inclusive are rhombohedral in R3 c, and the x ‫؍‬ 0.8 and x ‫؍‬ 0.9 compounds are, like the x ‫؍‬ 1 endmember SrTiO 3 , cubic in Pm3 m. This sequence di4ers from that reported recently in this journal (R. H. Mitchell and A. R. Chakhmouradian, J. Solid State Chem. 144, 81+85, 1999), but is as expected by comparison with the high-temperature behavior of the end member LaCrO 3 .

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