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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 6, Number 6
June 20, 1985 

Perovskite-Like Strontium Titanium Zirconium Oxide Solid Solutions Prepared at Atmospheric Pressure
Jin-Ho Choy, Hasuck Kim, Young-Uk Kwon, Chong-Hee Kim
Perovskite type oxides of SrTiO3, SrZrO3, and SrTi1-xZrxO3 have been systematically synthesized at 1250℃ and 1550℃ with specimens containing additions of up to x = 0.9 of zirconium by solid state reactions and characterized by X-ray diffraction. X-ray diffraction studies showed that the compound SrTi1-xZrxO3 has cubic structure. The lattice paramters of SrTi1-xZrxO3 so1id solutions obey the Vegard's law and fairly large increase in volume can acompany the formation of this solution with increasing Zr content (x). Assuming the lattice constants of perovskite type compounds A(B1-xB'x)O3, where B1-xB'x is Ti1-xZrx, to be a linear function of the ionic radii of B and B' ions, the disordered ion pair of Ti4+ and Zr4+ was verified from the lattice constants of a series compounds varying x = 0, 0.05, 0.25, 0.5, 0.75, 0.9, and 1.0 with known isovalent pairs.
344 - 347
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