Topological relations and piezoelectric responses of crystal-axis-oriented BaTiO<sub>3</sub>/CaTiO<sub>3</sub> nanocomposites

Hu, Dengwei; Niu, Xiaomei; Ma, Hao; Zhang, Wen‐Xiong; Sewvandi, Galhenage A.; Yang, Dongxu; Wang, Xiaoling; Wang, Hongshei; Kong, Xingang; Feng, Qi

doi:10.1039/c7ra03828c

Cited by 11 publications

(7 citation statements)

References 33 publications

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“…It is preliminarily found that when the proportion of two-phase components is close to 1, it can be regarded as the maximum density of the heterogeneous epitaxial interface, and the piezoelectric properties are the highest. [147,148] Proper adjustment of the lattice mismatch rate of different binary titanate nanocomplexes could also effectively regulate the piezoelectric properties. [149][150][151] This is due to the adjustment of the binding state at the interface, such as lattice matching, interface components, stress and strain, to improve residual polarization, promote polarization rotation, and enhance the spontaneous polarization ability and domain wall motion speed.…”

Section: (23 Of 29)mentioning

confidence: 99%

Additive Manufacturing of Piezoelectric Materials

Cheng

Wang

et al. 2020

Adv Funct Materials

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257

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The development of energy harvesting devices can not only effectively extend the service life of electronic equipment, but also bring convenience to equipment with power supplies that cannot be changed easily. Although the existing green energy sources can provide power to electronic devices efficiently, it is difficult to apply them to micro and small electronic devices with power on the order of mW or µW because of their demanding use conditions and large power generation. For these reasons, the energy generated by mechanical vibration and human movement has become a popular energy choice for microelectronic devices. [7-10] At present, there are several ways to convert the mechanical energy generated by vibration or moving objects into the electrical energy required by electronic equipment, including electromagnetic, [11,12] electrostatic, [13,14] and piezoelectric effect. [15,16] Compared with electromagnetic and electrostatic techniques, piezoelectric materials stand out because of their high energy conversion efficiency and strong piezoelectric sensitivity. [17,18] They can directly convert the applied mechanical stress into available electrical energy and are easy to integrate into the system, thus attracting extensive attention. These materials have been applied in many fields such as piezoelectric sensors, [19,20] actuators, [21,22] ultrasonic transducers, [23,24] and energy harvesters. [25,26] From this, we can see that piezoelectric materials show great development potential for emerging functional materials and have become the focus of future research regarding renewable clean energy and advanced energy storage materials. [27] The traditional piezoelectric device is fabricated by subtractive manufacturing. This process is not only complicated, long production cycle, low utilization rate of materials, high manufacturing cost, but it also mainly employs cutting technology such as scribing, broaching, sawing, or etching for piezoelectric devices with complex geometric shapes, which greatly limits operating conditions, density and work surroundings of piezoelectric devices. In addition, the mechanical stress generated by the traditional process will cause grain loss, strength degradation,

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Section: (23 Of 29)mentioning

confidence: 99%

Additive Manufacturing of Piezoelectric Materials

Cheng

Wang

et al. 2020

Adv Funct Materials

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257

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“…However, in this study, the piezoresponses of BT/CT NCs were clearly obtained. Moreover, Hu et al[14] also found an increment of 2-5 times in piezoresponse of BT/CT nanocomposite compared to that of BT. It suggested that the strain induced by heterointerfaces expressed the piezoelectric property.…”

mentioning

confidence: 93%

“…This suggests that SGR plays a role similar to MPB when the size of SGR reduces. BaTiO 3 /CaTiO 3 (BT/CT) nanocomposites synthesized by solvothermal reaction were also investigated [14]. Heterointerfaces have an enhanced d 33 value approximately 5 times that of BT nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

One-step synthesis of BaTiO₃/CaTiO₃ core-shell nanocubes by hydrothermal reaction

Mimura

Liu

Itasaka

et al. 2021

Journal of Asian Ceramic Societies

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Novel cube-shaped nanocrystals of BaTiO 3 (BT) surrounded by CaTiO 3 (CT) that can be used for piezo-driven energy harvesters were synthesized using a one-step hydrothermal reaction with surfactant and additives at 250°C for 24 h. The size distribution of the nanocubes (NCs) was narrow, with an approximate average size of 50 ~ 60 nm. The nanocubes had a core-shell configuration, such that the Pbnm structured CT shell was grown on a P4mm structured BT core by sharing corresponding [001] directions. STEM-EDX and EELS indicated that Ba ions did not diffuse into the CT shell region. Piezoelectric hysteresis loops of BT/CT NCs were obtained by piezoresponse force microscopy.

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“…Usually, some significant templates with anisotropic morphologies are used as precursors to yield the target with the original framework of the precursor via an in situ topochemical conversion reaction during hydrothermal treatments. ,, Some one- or two-dimensional (1D or 2D) BT crystals can be prepared from protonated titanates, such as H 1.07 Ti 1.73 O 4 · n H 2 O, H 2 Ti 4 O 9 · n H 2 O, − H 2 Ti 3 O 7 , H 2 Ti 2 O 5 , and other protonated titanates, as precursors with layered structures . These precursors can react with an alkaline earth metal hydroxide to form the BT phase during the hydrothermal process. , Some 2D titanate polycrystals were developed using hydrothermal processes from titanate precursors in our previous works. ,,, Those titanate polycrystals were constructed from oriented nanocrystals and showed single-crystal diffraction points, i.e., they were mesocrystals. Although the formation mechanism and electric properties of the 2D titanate mesocrystals have been revealed, little is known about the electric properties of 1D titanate mesocrystals.…”

Section: Introductionmentioning

confidence: 99%

“…Previously, we prepared BT polycrystal using the 2D H 1.07 Ti 1.73 O 4 as the precursor for the first time . On the basis of that study, the topological relations between H 1.07 Ti 1.73 O 4 and the obtained BT-based nanocomposite mesocrystal have been investigated. ,, However, little is known about the piezoelectric response of BT obtained from this layered titanate.…”

Section: Introductionmentioning

confidence: 99%

One-Dimensional Piezoelectric BaTiO₃ Polycrystal of Topochemical Mesocrystal Conversion from Layered H₂Ti₄O₉·H₂O Single Crystal

Miao

Zhang

et al. 2018

Crystal Growth & Design

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A one-dimensional (1D) piezoelectric BaTiO3(BT) polycrystal with a tetragonal system was controllably prepared using a one-step hydrothermal soft chemical process. A layered H2Ti4O9·H2O (HTO) single crystal was used as the precursor. Interestingly, the obtained polycrystalline BT constructed from oriented BT nanoparticles shows a set of single-crystalline diffraction points, implying that the BT polycrystal is a mesocrystal. The [010] and [001] directions of the obtained mesocrystalline BT correspond to the [001] and [010] directions of the original HTO crystal, respectively, and the [010] direction of the mesocrystalline BT corresponds to the direction along the length of a 1D rod matrix. An in situ topochemical mesocrystal conversion of mesocrystalline BT grown on the HTO substrate occurred not only on the substrate surface but also in the interlayers owing to the unique TiO6 octahedral layers of HTO. In addition, the piezoelectric response of the 1D mesocrystal was captured for the first time. The piezoelectric property of BT mesocrystals hinges on its nanostructure. It is a challenge to develop a special process to prepare highly 1D anisotropic perovskite titanate polycrystals with high crystallinity and piezoelectric response. This novel strategy can be utilized to develop piezoelectric mesocrystalline materials.

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Topological relations and piezoelectric responses of crystal-axis-oriented BaTiO₃/CaTiO₃ nanocomposites

Cited by 11 publications

References 33 publications

Additive Manufacturing of Piezoelectric Materials

Additive Manufacturing of Piezoelectric Materials

One-step synthesis of BaTiO₃/CaTiO₃ core-shell nanocubes by hydrothermal reaction

One-Dimensional Piezoelectric BaTiO₃ Polycrystal of Topochemical Mesocrystal Conversion from Layered H₂Ti₄O₉·H₂O Single Crystal

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Topological relations and piezoelectric responses of crystal-axis-oriented BaTiO3/CaTiO3 nanocomposites

Cited by 11 publications

References 33 publications

Additive Manufacturing of Piezoelectric Materials

Additive Manufacturing of Piezoelectric Materials

One-step synthesis of BaTiO3/CaTiO3 core-shell nanocubes by hydrothermal reaction

One-Dimensional Piezoelectric BaTiO3 Polycrystal of Topochemical Mesocrystal Conversion from Layered H2Ti4O9·H2O Single Crystal

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Product

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Topological relations and piezoelectric responses of crystal-axis-oriented BaTiO₃/CaTiO₃ nanocomposites

One-step synthesis of BaTiO₃/CaTiO₃ core-shell nanocubes by hydrothermal reaction

One-Dimensional Piezoelectric BaTiO₃ Polycrystal of Topochemical Mesocrystal Conversion from Layered H₂Ti₄O₉·H₂O Single Crystal