Synthesis, single crystal growth and thermodynamic properties of SrNdAlO4–CaNdAlO4 solid solutions by A. Novoselov, M. Ryumin, G. Pushkina, F. Spiridonov, G. Zimina, L. Komissarova, and A. Pajaczkowska

Crystal Research and Technology

Cryst. Res. Technol. 40, 405 (2005) - Abstract -

Synthesis, single crystal growth and thermodynamic properties of SrNdAlO₄–CaNdAlO₄ solid solutions

A. Novoselov, M. Ryumin*, G. Pushkina*, F. Spiridonov*, G. Zimina*, L. Komissarova*, and A. Pajaczkowska

Institute of Electronic Materials Technology, 01-919 Warsaw, Poland
*Lomonosov Moscow State University, 119899 Moscow, Russia

Keywords	substrate, chemical synthesis, single crystal growth, x-ray powder diffraction, differential scanning calorimetry, thermodynamic properties
PACS	61.66.Hq
DOI	10.1002/crat.200410358

Continuous solid solutions in the SrNdAlO₄–CaNdAlO₄ system are formed. Powder samples of Sr_xCa_1-xNdAlO₄ (0.0 ≤ x ≤ 1.0) were obtained using the carbonate coprecipitation method while single crystals of Sr_xCa_1-xNdAlO₄ (x = 0.0, 0.162, 0.392, 0.687, 1.0) were grown by the Czochralski method. Structural parameters and thermodynamic properties of the samples were studied by X-ray diffraction and heat flux Calvet calorimetry. Composition dependence of lattice constants was observed to follow Vegard’s low. Heat of solution of the Sr_xCa_1-xNdAlO₄ samples in molten 2PbO^.B₂O₃ were measured, and enthalpies of formation and mixing were calculated.

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