Triggered incommensurate transition in 
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Burkovsky, R. G.; Bronwald, Iurii; Andronikova, Daria; Lityagin, Georgiy; Piecha, Julita; Souliou, S. M.; Majchrowski, A.; Filimonov, A. V.; Rudskoy, A. I.; Roleder, Krystian; Bosak, Alexeï; Tagantsev, A. K.

doi:10.1103/physrevb.100.014107

Cited by 30 publications

(40 citation statements)

References 48 publications

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“…Moreover, the γ mode is most probably governed by antiferrodistortive (AFD) instability and is connected with distortions of the oxygen octahedra. According to Burkovsky, the AFD mode plays a crucial role in the phase transitions in PZO and PbHfO 3 . Furthermore, the AFD instability is linked to antiphase oxygen octahedral tilts.…”

Section: Resultsmentioning

confidence: 99%

Influence of Nb⁵⁺ ions on phase transitions and polar disorder above T_C in PbZrO₃ studied by Raman spectroscopy

Kajewski

Jankowska‐Sumara

et al. 2020

J Am Ceram Soc

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Micro‐Raman light scattering experiments on PbZrO3 (PZO) single crystal doped with Nb5+ have been investigated. Special attention was paid to the paraelectric (PE) phase in which nominally forbidden first‐order Raman spectra were detected at temperatures far above the phase transition TC. Complex Raman spectra were observed in the vicinity of three structural phase transitions. These results mainly from the coexistence of phases with different symmetries in a wide temperature range below TC. The Raman measurements have been compared with dielectric and optical observations and proved that polar nanoregions in a centrosymmetric lattice appear well above TC. It was shown that doping ABO3 perovskites with heterovalent ions like Nb5+ unbalances charge neutrality of the lattice and strongly extends the temperature range of polar regions. The investigations performed point out that in the PE matrix the interaction between electrons and lattice vibrations, as recently suggested for pure PZO, plays an important role.

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Section: Resultsmentioning

confidence: 99%

Influence of Nb⁵⁺ ions on phase transitions and polar disorder above T_C in PbZrO₃ studied by Raman spectroscopy

Kajewski

Jankowska‐Sumara

et al. 2020

J Am Ceram Soc

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“…It should be mentioned that PbHfO 3 (PHO) antiferroelectric ceramics have some similarity with PZO, and thus the related studies still concentrate on phase structure [173][174][175]. Nevertheless, the energy storage properties of PHO-based ceramics have rarely been reported.…”

Section: Pb-based Antiferroelectric Ceramicsmentioning

confidence: 99%

Progress and perspectives in dielectric energy storage ceramics

Zeng

et al. 2021

J Adv Ceram

212

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Dielectric ceramic capacitors, with the advantages of high power density, fast charge-discharge capability, excellent fatigue endurance, and good high temperature stability, have been acknowledged to be promising candidates for solid-state pulse power systems. This review investigates the energy storage performances of linear dielectric, relaxor ferroelectric, and antiferroelectric from the viewpoint of chemical modification, macro/microstructural design, and electrical property optimization. Research progress of ceramic bulks and films for Pb-based and/or Pb-free systems is summarized. Finally, we propose the perspectives on the development of energy storage ceramics for pulse power capacitors in the future.

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“…Для чистого PZO эта концепция не была подтверждена, и было показано, что R-ПП возникает по триггерному механизму [17,18]. В то же время в работе [19] была выявлена конденсация R-моды в кристалле PbHfO 3 и было предположено, что именно она является " первичной". В отличие от R-точки динамика решетки в окрестности М-точки остается мало изученной.…”

Section: Introductionunclassified

Антиферродисторсионная мягкая мода в кристалле PbZr-=SUB=-0.024-=/SUB=-Ti-=SUB=-0.976-=/SUB=-O-=SUB=-3-=/SUB=-

Vakhrushev¹,

Бронвальд²,

Петрухно³

et al. 2021

Физика Твердого Тела

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The antiferrodistortive soft mode was detected at the M point of the Brillouin zone in a crystal PbZr0.024Ti0.976O3 using the method of inelastic scattering of synchrotron radiation. The performed group-theoretical analysis and calculations of inelastic structural factors made it possible to relate the detected critical excitation to oxygen octahedra rotations. The traced temperature evolution of the soft mode frequency obeys the Curie-Weiss law with Curie temperature T AFD = 438 ± 5 K, which is close to the ferroelectric Curie temperature T FE = 479.5 K.

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Triggered incommensurate transition in PbHfO3

Cited by 30 publications

References 48 publications

Influence of Nb⁵⁺ ions on phase transitions and polar disorder above T_C in PbZrO₃ studied by Raman spectroscopy

Influence of Nb⁵⁺ ions on phase transitions and polar disorder above T_C in PbZrO₃ studied by Raman spectroscopy

Progress and perspectives in dielectric energy storage ceramics

Антиферродисторсионная мягкая мода в кристалле PbZr-=SUB=-0.024-=/SUB=-Ti-=SUB=-0.976-=/SUB=-O-=SUB=-3-=/SUB=-

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Triggered incommensurate transition in PbHfO3

Cited by 30 publications

References 48 publications

Influence of Nb5+ ions on phase transitions and polar disorder above TC in PbZrO3 studied by Raman spectroscopy

Influence of Nb5+ ions on phase transitions and polar disorder above TC in PbZrO3 studied by Raman spectroscopy

Progress and perspectives in dielectric energy storage ceramics

Антиферродисторсионная мягкая мода в кристалле PbZr-=SUB=-0.024-=/SUB=-Ti-=SUB=-0.976-=/SUB=-O-=SUB=-3-=/SUB=-

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Influence of Nb⁵⁺ ions on phase transitions and polar disorder above T_C in PbZrO₃ studied by Raman spectroscopy

Influence of Nb⁵⁺ ions on phase transitions and polar disorder above T_C in PbZrO₃ studied by Raman spectroscopy