Advances in tuning the “d33 ∝ 1/Td” bottleneck: simultaneously realizing large d33 and high Td in Bi0.5Na0.5TiO3-based relaxor ferroelectrics

Yin, Jie; Zhang, Yuxing; Han, Jihui; Huang, Yanli; Li, Zhitao; Zhang, Xingmin; Wu, Jiagang

doi:10.1039/d0ta01559h

Cited by 34 publications

(19 citation statements)

References 33 publications

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“…7,8,15,16 While the MPB compositions exhibit the highest piezoelectric and coupling coefficients, their lower depolarization temperature is a limiting drawback in applications demanding higher operational temperatures. 11,17,18 NBT-BT has distinct advantages when contrasted to PZT. Tou et al, 19 Doshida et al, 20 and Hejazi et al 21 demonstrated that NBT-based materials can withstand high vibration velocity and even outperform PZT-based materials.…”

Section: Introductionmentioning

confidence: 99%

“…The transition was reported to be positioned between NBT‐6BT and NBT‐7BT, and the inconsistency in the criticality can be assigned to different processing conditions and the resulting small deviations in stoichiometry and microstructure 7,8,15,16 . While the MPB compositions exhibit the highest piezoelectric and coupling coefficients, their lower depolarization temperature is a limiting drawback in applications demanding higher operational temperatures 11,17,18 …”

Section: Introductionmentioning

confidence: 99%

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Influence of Zn²⁺ doping on the morphotropic phase boundary in lead‐free piezoelectric (1 – x)Na_1/2Bi_1/2TiO₃‐xBaTiO₃

et al. 2021

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A series of morphotropic phase boundary (MPB) compositions of (1-x) Na 1/2 Bi 1/2 TiO 3 -xBaTiO 3 (x = 0.05, 0.055, 0.06, 0.065, 0.07), with and without 0.5 mol% Zn-doping was synthesized using the solid-state route. The samples were characterized using X-ray diffraction, dielectric analysis, and electromechanical measurements (piezoelectric d 33 coefficient, coupling factor k p , mechanical quality factor Q m , and internal bias field E bias ). The increase in the ferroelectric-relaxor transition temperature upon Zn-doping was accompanied by a shift of the MPB toward the Na 1/2 Bi 1/2 TiO 3 -rich side of the phase diagram.Higher tetragonal phase fraction and increased tetragonal distortion were noted for Zn-doped (1 -x)Na 1/2 Bi 1/2 TiO 3 -xBaTiO 3 . In addition, ferroelectric hardening and the presence of an internal bias field (E bias ) were observed for all doped compositions. The piezoelectric constant d 33 and the coupling coefficient k p decreased by up to ∼30%, while a 4-to 6-fold increase in Q m was observed for the doped compositions. Apart from establishing a structure-property correlation, these results highlight the chemically induced shift of the phase diagram upon doping, which is a crucial factor in material selection for optimal performance and commercialization.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Zn²⁺ doping on the morphotropic phase boundary in lead‐free piezoelectric (1 – x)Na_1/2Bi_1/2TiO₃‐xBaTiO₃

et al. 2021

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“…The above analysis indicated the transformation of the BS‐xPT‐BSN ceramics from relaxed ferroelectric to normal ferroelectric, which means that the short‐range order in ceramics was gradually destroyed as the PT content increased following the formation of the long‐range order 21 . As shown in Figure 3F, the room temperature permittivity reduced as the PT content increased, which also confirmed the formation of the long‐range order 22 . Additionally, the long‐range order affected the activities of the domain and domain wall, which were closely related to the electrical performance.…”

Section: Resultsmentioning

confidence: 61%

“…21 As shown in Figure 3F, the room temperature permittivity reduced as the PT content increased, which also confirmed the formation of the long-range order. 22 Additionally, the long-range order affected the activities of the domain and domain wall, which were closely related to the electrical performance. The details are introduced in the next section.…”

Section: Methodsmentioning

confidence: 99%

Investigation into the phase structures and temperature stability of BiScO₃‐PbTiO₃‐based piezoelectric ceramics

et al. 2021

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Phase structure has a strong influence on the temperature stability of ceramics; however, their influence on BiScO 3 -xPbTiO 3 has been neglected. To meet the requirements for practical applications, (0.98-x)BiScO 3 -xPbTiO 3 -0.02Bi(Sn 1/3 Nb 2/3 )O 3 (BS-xPT-BSN, 0.59 ≤ x ≤ 0.65) polycrystalline ferroelectrics with rhombohedral phase, morphotropic phase boundary (Cm and P4mm coexisting), and tetragonal phase has been prepared and studied. The relationship between the phase structures and temperature stability is established from the macro properties as well as the underlying domain behaviors. The results show that the tetragonal phase is not sensitive to temperature because of its stable domains, which is a positive motivator for improving the temperature stability of ceramics. This work provides a new strategy for the design of high-temperature piezoelectric ceramics in the future.

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“…28,34 Piezoresponse force microscopy (PFM) shows a morphology change from labyrinth-like structures towards an increased area and width of the domains in quenched NBT-based ceramics. 35 The NBT-BT solid solution undergoes several temperature-induced phase transitions depending on the composition. In pure NBT, a R3c to P4bm transition starting at ∼255 • C and a P4bm to Pm 3m transition starting at ∼500 • C was reported based on powder neutron diffraction.…”

Section: Introductionmentioning

confidence: 99%

In situ hot‐stage TEM of the phase and domain evolution in quenched Na_1/2Bi_1/2TiO₃–BaTiO₃

et al. 2021

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Quenching relaxor ferroelectric 0.94(Na 1/2 Bi 1/2 )TiO 3 -0.06BaTiO 3 (NBT-6BT) enhances the depolarization temperature (T d ), linked to the stabilization of ferroelectric order. The thermal evolution of the domain structure and phase assemblage provides insights about the onset of ferroelectric order in quenched materials. Unpoled furnace cooled and quenched NBT-6BT ceramics were studied using in situ temperature-dependent transmission electron microscopy. The rhombohedral to tetragonal structural transition in furnace cooled and quenched samples occurs in a comparable temperature range of 120 • C-220 • C. While the tetragonal phase is characterized by polar nanoregions (PNRs) and no domain contrast in the furnace cooled state, the quenched composition exhibits an increased fraction of lamellar domains, which are partially stable up to 300 • C, thus benefiting the delayed depolarization. This is further corroborated by the dielectric data indicating earlier freezing of PNR dynamics in the quenched state. The reversibility of the phase transition is demonstrated by successive cooling, where quenched NBT-6BT features an increased grainy PNR contrast after the experiment, followed by a kinetically delayed coalescence of PNRs back into lamellar domains. This demonstrates that the stabilized ferroelectric state upon quenching is associated with the conversion of polar units on the nanometer scale into long-range domain structures.

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Advances in tuning the “d₃₃ ∝ 1/T_d” bottleneck: simultaneously realizing large d₃₃ and high T_d in Bi_0.5Na_0.5TiO₃-based relaxor ferroelectrics

Abstract: We report the simultaneous achievement of a large d33 and a high depolarization temperature (Td) in Bi0.5Na0.5TiO3-based complex oxides.

Cited by 34 publications

References 33 publications

Influence of Zn²⁺ doping on the morphotropic phase boundary in lead‐free piezoelectric (1 – x)Na_1/2Bi_1/2TiO₃‐xBaTiO₃

Influence of Zn²⁺ doping on the morphotropic phase boundary in lead‐free piezoelectric (1 – x)Na_1/2Bi_1/2TiO₃‐xBaTiO₃

Investigation into the phase structures and temperature stability of BiScO₃‐PbTiO₃‐based piezoelectric ceramics

In situ hot‐stage TEM of the phase and domain evolution in quenched Na_1/2Bi_1/2TiO₃–BaTiO₃

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Advances in tuning the “d33 ∝ 1/Td” bottleneck: simultaneously realizing large d33 and high Td in Bi0.5Na0.5TiO3-based relaxor ferroelectrics

Abstract: We report the simultaneous achievement of a large d33 and a high depolarization temperature (Td) in Bi0.5Na0.5TiO3-based complex oxides.

Cited by 34 publications

References 33 publications

Influence of Zn2+ doping on the morphotropic phase boundary in lead‐free piezoelectric (1 – x)Na1/2Bi1/2TiO3‐xBaTiO3

Influence of Zn2+ doping on the morphotropic phase boundary in lead‐free piezoelectric (1 – x)Na1/2Bi1/2TiO3‐xBaTiO3

Investigation into the phase structures and temperature stability of BiScO3‐PbTiO3‐based piezoelectric ceramics

In situ hot‐stage TEM of the phase and domain evolution in quenched Na1/2Bi1/2TiO3–BaTiO3

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Advances in tuning the “d₃₃ ∝ 1/T_d” bottleneck: simultaneously realizing large d₃₃ and high T_d in Bi_0.5Na_0.5TiO₃-based relaxor ferroelectrics

Influence of Zn²⁺ doping on the morphotropic phase boundary in lead‐free piezoelectric (1 – x)Na_1/2Bi_1/2TiO₃‐xBaTiO₃

Influence of Zn²⁺ doping on the morphotropic phase boundary in lead‐free piezoelectric (1 – x)Na_1/2Bi_1/2TiO₃‐xBaTiO₃

Investigation into the phase structures and temperature stability of BiScO₃‐PbTiO₃‐based piezoelectric ceramics

In situ hot‐stage TEM of the phase and domain evolution in quenched Na_1/2Bi_1/2TiO₃–BaTiO₃