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Synthesis and Structure Characterisation of Micro-and Nanocrystalline Powders of Dy_{1-x}R_xFeO₃ (R = La, Pr, Nd, Sm, Gd)

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Pavlovska O., Lutsyuk I., Kondyr A., Zhydachevskyy Y., Vakhula Y., Pieniążek A., Vasylechko L.

Acta Physica Polonica A

2018

vol. 133

issue 4

802-805

This work deals with the study of the phase and crystal structure behaviour of new micro- and nanocrystalline ferrites Dy_{1-x}R_xFeO₃ obtained by solid state reactions (R = La, Pr) and sol-gel citrate (R = Nd, Sm, Gd) techniques. It was established that all synthesized samples adopt orthorhombic perovskite structure isotypic with GdFeO₃. Unit cell dimensions and atomic coordinates of the mixed rare earth ferrites derived by full profile Rietveld refinement technique agree well with the data of the "pure" DyFeO₃ and RFeO₃ compounds, thus proving formation of continuous solid solutions Dy_{1-x}R_xFeO₃ in the DyFeO₃-RFeO₃ systems (R = La, Pr, Nd, Sm, Gd). Peculiarity of the Dy_{1-x}La_xFeO₃ series is the lattice parameters crossover and formation of dimensionally tetragonal structure at x ≈0.97.

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1 Acta Physica Polonica A

1 2018

1 Kondyr A.

1 Lutsyuk I.

1 Pavlovska O.

1 Pieniążek A.

1 Vakhula Y.

1 Vasylechko L.

1 Zhydachevskyy Y.

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Synthesis and Structure Characterisation of Micro-and Nanocrystalline Powders of Dy_{1-x}R_xFeO₃ (R = La, Pr, Nd, Sm, Gd)