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Mihailova B, Maier BJ, Steilmann T, et al. Electric-field-induced local structural phenomena in Pb-based ABO3-type relaxor ferroelectrics. IEEE Trans Ultrason Ferroelectr Freq Control. 2015;62(1):7-17doi: 10.1109/TUFFC.2014.006669.
Mihailova, B., Maier, B. J., Steilmann, T., Dul'kin, E., & Roth, M. (2015). Electric-field-induced local structural phenomena in Pb-based ABO3-type relaxor ferroelectrics. IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 62(1), 7-17. https://doi.org/10.1109/TUFFC.2014.006669
Mihailova, Boriana, et al. "Electric-field-induced local structural phenomena in Pb-based ABO3-type relaxor ferroelectrics." IEEE transactions on ultrasonics, ferroelectrics, and frequency control vol. 62,1 (2015): 7-17. doi: https://doi.org/10.1109/TUFFC.2014.006669
Mihailova B, Maier BJ, Steilmann T, Dul'kin E, Roth M. Electric-field-induced local structural phenomena in Pb-based ABO3-type relaxor ferroelectrics. IEEE Trans Ultrason Ferroelectr Freq Control. 2015 Jan;62(1):7-17. doi: 10.1109/TUFFC.2014.006669. PMID: 25585386.
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IEEE Trans Ultrason Ferroelectr Freq Control. 2015 Jan;62(1):7-17. doi: 10.1109/TUFFC.2014.006669.

Electric-field-induced local structural phenomena in Pb-based ABO3-type relaxor ferroelectrics.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

Boriana Mihailova, Bernd J Maier, Thomas Steilmann, Evgeniy Dul'kin, Michael Roth

PMID: 25585386 DOI: 10.1109/TUFFC.2014.006669

Abstract

Lead-based ABO3-type relaxors and related systems have numerous applications in modern technical devices because of their remarkably high dielectric permittivity and piezoelectric/electroelastic and electro-optic coefficients. However, lead is not desired from an environmental point of view, and to switch to alternative alkali-, Ba-, or Bi-based relaxor systems, one must understand in great detail the structural mesoscopic order and coupling processes responsible for the outstanding performance and multifunctionality of the exemplar Pb-based compounds. To elucidate the type of ferroic coupling, three relaxor compounds PbSc0.5Ta0.5O3 (PST), Pb0.78Ba0.22Sc0.5Ta0.5O3 (PST-Ba), and PbSc0.5Nb0.5O3 (PSN), were studied by polarized Raman scattering and acoustic emission at different temperatures and under an external electric field. The results reveal the coexistence of mesoscopic-scale ferroelectric and antiferroelectric coupling, which are predominantly related to B-site cations and A-site Pb cations, respectively. This suggests that the polar structural state of relaxors is frustrated ferrielectric. The presence of A-site cations with affinity to off-center is significant for the development of mesoscopic-scale antiferroelectric order coexisting with the mesoscopic-scale ferroelectric order.

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