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Sequence of phase transitions in PbHfO3

  • Structure of Inorganic Compounds
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Abstract

The temperature changes in the PbHfO3 structure in the temperature range of 20 < t < 400°C have been studied by X-ray powder diffraction. The sequence of phase changes with an increase in temperature was found to be as follows: orthorhombic phase Pbam (O1), orthorhombic phase C2mm (O2), tetragonal phase P4mm (T), and cubic phase Pm3m (C). The C2mm and P4mm phases are ferroelectric, which is confirmed by measuring the dependences ɛ(t). The similarity of the transition pattern obtained with the known transition sequences for ferroelectric (barium titanate, potassium niobate, and lead titanate) and antiferroelectric (lead zirconate) oxides is analyzed.

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Authors and Affiliations

  1. Southern Federal University, ul. Zorge 5, Rostov-on-Don, 344090, Russia

    M. F. Kupriyanov, E. V. Petrovich, E. V. Dutova & Yu. V. Kabirov

Authors
  1. M. F. Kupriyanov
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  2. E. V. Petrovich
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  3. E. V. Dutova
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  4. Yu. V. Kabirov
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Correspondence to M. F. Kupriyanov.

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Original Russian Text © M.F. Kupriyanov, E.V. Petrovich, E.V. Dutova, Yu.V. Kabirov, 2012, published in Kristallografiya, 2012, Vol. 57, No. 2, pp. 253–255.

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Kupriyanov, M.F., Petrovich, E.V., Dutova, E.V. et al. Sequence of phase transitions in PbHfO3 . Crystallogr. Rep. 57, 205–207 (2012). https://doi.org/10.1134/S1063774512020125

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  • DOI: https://doi.org/10.1134/S1063774512020125

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