Deciphering the phase transition-induced ultrahigh piezoresponse in (K,Na)NbO3-based piezoceramics

Zhang, Mao‐Hua; Chen, Shen; Zhao, Changhao; Dai, Mian; Yao, Fang‐Zhou; Wu, Bo; Ma, Jian; Hu, Nan; Wang, Dawei; Yuan, Qibin; Silva, Lucas Lemos da; Fulanović, Lovro; Schökel, Alexander; Liu, Peitao; Zhang, Hongbin; Li, Jing‐Feng; Zhang, Nan; Wang, Ke; Rödel, Jürgen; Hinterstein, Manuel

doi:10.1038/s41467-022-31158-x

Cited by 63 publications

(32 citation statements)

References 76 publications

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“…The application of a low DC bias eld does not substantially impact the dimension of the crystalline region and the crystal structure of the P(VDF-TrFE) 18,31 . As shown in Fig.…”

Section: Induced Piezoelectricity In Unpoled Ferroelectric Polymer P(...mentioning

confidence: 99%

Induced polarization imparts piezoelectricity in non-crystalline polymer films

Yang

Hou

et al. 2023

Preprint

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Piezoelectric materials produce linear deformation in response to an applied electric field and are essential for precision control devices. The conventional view is that polymers must be crystalline and possess a remanent polarization after an artificial poling in order to gain piezoelectricity. For ferroelectric polymer poly(vinylidene difluoride), the required poling field is exceptionally high, up to 150–200 volts per micron. Here, we circumvent this limitation by utilizing the elastic displacement of the electric dipoles and creating a net polarization. In this case, the dielectric acts as a piezoelectric as long as a bias electric field is applied, with its piezoelectric coefficient increasing proportionally to the strength of the electric field until polarization saturation sets in. Experiments indicate that a sub-coercive field of 68 volts per micron can induce a high piezoelectric coefficient d33 of − 36 picometers per volt in an unpoled poly(vinylidene fluoride-trifluoroethylene) film. The proposed methodology is further extended to amorphous polymers, providing an opportunity to discover new piezoelectrics within the dielectric family.

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“…The application of a low DC bias eld does not substantially impact the dimension of the crystalline region and the crystal structure of the P(VDF-TrFE) 18,31 . As shown in Fig.…”

Section: Induced Piezoelectricity In Unpoled Ferroelectric Polymer P(...mentioning

confidence: 99%

Induced polarization imparts piezoelectricity in non-crystalline polymer films

Yang

Hou

et al. 2023

Preprint

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“…In addition, due to the toxicity of Pb, environmentally benign lead-free piezoelectrics have received intensive attention, such as BaTiO 3 [ 39 , 40 , 41 ], sodium bismuth titanate (BNT) [ 42 , 43 , 44 ], and potassium sodium niobate (KNN) [ 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 ]. In Figure 2 b, Jong et al demonstrated a BaTiO 3 hybrid film by adopting a simple and facile inkjet-printing process [ 53 ].…”

Section: Piezoelectric Materialsmentioning

confidence: 99%

Piezoelectric Materials and Sensors for Structural Health Monitoring: Fundamental Aspects, Current Status, and Future Perspectives

Ju¹,

Dou²,

Wang³

et al. 2023

Sensors

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Structural health monitoring technology can assess the status and integrity of structures in real time by advanced sensors, evaluate the remaining life of structure, and make the maintenance decisions on the structures. Piezoelectric materials, which can yield electrical output in response to mechanical strain/stress, are at the heart of structural health monitoring. Here, we present an overview of the recent progress in piezoelectric materials and sensors for structural health monitoring. The article commences with a brief introduction of the fundamental physical science of piezoelectric effect. Emphases are placed on the piezoelectric materials engineered by various strategies and the applications of piezoelectric sensors for structural health monitoring. Finally, challenges along with opportunities for future research and development of high-performance piezoelectric materials and sensors for structural health monitoring are highlighted.

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“…For O-phase KNN, increased temperature can increase the dipole activity and enhance the ε r , but at the same time, it can also decrease the d 33 because of the reduction in the asymmetry of the system. 13 Because the non-synergistic change in the two parameters leads to temperature sensitivity of the FOM, it cannot be used in PEHs with stable working requirements.…”

Section: Introductionmentioning

confidence: 99%