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

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons22243

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 Bi1-xPrxFeO3 ceramics at the rhombohedral–orthorhombic phase boundary. Journal of Materials Science, 52(16), 9355-9362. doi:10.1007/s10853-017-1152-0.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-002D-7AFD-F
Zusammenfassung
Crystal structure of the Bi1-xPrxFeO3 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.