Effect of size factor on the Ruddlesden-Popper single-slab compounds structure features

Yuriy Alexandrovich Titov, Nadegda Nikolaevna Belyavina, Mikola Semenovich Slobodyanik, Olesya Ivanovna Nakonechna, Nataliia Yurievna Strutynska


Character of influence of the strontium atoms replacement by smaller atoms of calcium on structure features of the Ruddlesden-Popper (Sr,Ca)LaScO4 (A2BO4) single-slab compoundis established. Structure of phase with a maximum degree of replacementhas determined by the Rietveld method. It is shown that such type of substitution increases a degree of AO9 interblock polyhedra deformation, mutual inclination of the BO6 octahedra and a decrease of A - О interblock bond. Presence of structure changes is the precondition for regulation of structural-dependent features of the materials on the base of scandates alkaline-earth and rare earth metals.


Ruddlesden-Popper compound; solid solution; X-ray powder diffraction method; slab perovskite-like structure

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Alexandrov KC, Beznosikov BV, Perovskites. Present and future. Novosibirsk: SO RAN Publishers; 2004, pp.105-138.

KIM I, NAKAMURA T, ITOH M. Humidity Sensing Effects of the Layered Oxides SrO (LaScO3)n (n=1, 2, ∞). Journal of the Ceramic Society of Japan 1993;101(1175):800-803. https://doi.org/10.2109/jcersj.101.800

Kim I, Kawaji H, Itoh M, Nakamura T. Structural and dielectric studies on the new series of layered compounds, strontium lanthanum scandium oxides. Materials Research Bulletin 1992;27(10):1193-1203. https://doi.org/10.1016/0025-5408(92)90227-q

Schaak R, Mallouk T. Perovskites by Design: A Toolbox of Solid-State Reactions. Chemistry of Materials 2002;14(4):1455-1471. https://doi.org/10.1021/cm010689m

Titov Y, Nedilko S, Chornii V, Scherbatskii V, Belyavina N, Markiv V, Polubinskii V. Crystal Structure and Luminescence of Layered Perovskites Sr3LnInSnO8. Solid State Phenomena 2015;230:67-72. https://doi.org/10.4028/www.scientific.net/ssp.230.67

Kato S. Synthesis and oxide ion conductivity of new layered perovskite La1−xSr1+xInO4−d. Solid State Ionics 2002;149(1-2):53-57. https://doi.org/10.1016/s0167-2738(02)00138-8

Ueda K, Yamashita T, Nakayashiki K, Goto K, Maeda T, Furui K, Ozaki K, Nakachi Y, Nakamura S, Fujisawa M, Miyazaki T. Green, Orange, and Magenta Luminescence in Strontium Stannates with Perovskite-Related Structures. Japanese Journal of Applied Physics 2006;45(9A):6981-6983. https://doi.org/10.1143/jjap.45.6981

Titov Y, , Belyavina N, Slobodyanik M, Babaryk A, Timoschenko M. Influence of the composition on the organization of a layered perovskite-like structure of indates AIILaInO4. Reports of the National Academy of Sciences of Ukraine 2017;(4):70-75. https://doi.org/10.15407/dopovidi2017.04.070

Zvereva I, Smirnov Y, Choisnet J. Prominent part of calcium ordering in the formation and stability of the intergrowth type solid solution La2Sr1−xCaxAl2O7. International Journal of Inorganic Materials 2001;3(1):95-100. https://doi.org/10.1016/s1466-6049(00)00099-4

Dashevskyi M, Boshko O, Nakonechna O, Belyavina N. Phase Transformations in Equiatomic Y–Cu Powder Mixture at Mechanical Milling. METALLOFIZIKA I NOVEISHIE TEKHNOLOGII 2017;39(4):541-552. https://doi.org/10.15407/mfint.39.04.0541

Patel R, Simon C, Weller M. LnSrScO4 (Ln=La, Ce, Pr, Nd and Sm) systems and structure correlations for A2BO4 (K2NiF4) structure types. Journal of Solid State Chemistry 2007;180(1):349-359. https://doi.org/10.1016/j.jssc.2006.10.023

Shannon R. Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Crystallographica Section A 1976;32(5):751-767. https://doi.org/10.1107/s0567739476001551