Kinetics of Formation of Ruddlesden-Popper Phases: I. Mechanism of La2SrAl2O7 Formation |
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| Authors: | Zvereva I A Popova V F Vagapov D A Toikka A M Gusarov V V |
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| Institution: | (1) St. Petersburg State University, St. Petersburg, Russia;(2) Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences, St. Petersburg, Russia |
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| Abstract: | Phase formation in the La2O3-SrO-Al2O3 system was studied. Formation of the perovskite LaAlO3 structure and the perovskite-like LaSrAlO4 and La2SrAl2O7 layered structures in solid-phase chemical reactions is activated only after reaching certain critical temperatures which correlate with the temperatures of of the transition of intergranular formations to the liquid-like state (melting points of two-dimensional nonautonomous phases). |
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