Intermediate structural state in Bi1-xPrxFeO3 ceramics at the 
rhombohedral–orthorhombic phase boundary

Karpinsky, D. V.; Troyanchuk, I. O.; Willinger, Marc Georg; Khomchenko, V. A.; Salak, A. N.; Sikolenko, V.; Silibin, M. V.

doi:10.1007/s10853-017-1152-0

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Intermediate structural state in Bi_1-xPr_xFeO₃ ceramics at the rhombohedral–orthorhombic phase boundary

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Willinger, Marc Georg
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Zitation

Karpinsky, D. V., Troyanchuk, I. O., Willinger, M. G., Khomchenko, V. A., Salak, A. N., Sikolenko, V., et al. (2017). Intermediate structural state in Bi_1-xPr_xFeO₃ ceramics at the rhombohedral–orthorhombic phase boundary. Journal of Materials Science, 52(16), 9355-9362. doi:10.1007/s10853-017-1152-0.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002D-7AFD-F

Zusammenfassung

Crystal structure of the Bi_1-xPr_xFeO₃ ceramics of the compositions corresponding to the threshold concentrations separating the polar rhombohedral (R3c) and anti-polar orthorhombic (Pbam) phases has been investigated with X-ray diffraction, transmission electron microscopy and differential scanning calorimetry measurements performed in a broad temperature range. The structural study specifies the peculiarities of the temperature-driven transition into the non-polar orthorhombic (Pnma) phase depending on the structural state of the compounds at room temperature. The crystal structure analysis reveals the revival of the anti-polar orthorhombic phase upon the temperature-induced transition, thus assuming that it can be considered as the bridge phase between the polar rhombohedral and the non-polar orthorhombic phases.