Large Electromechanical Response in a Polycrystalline Alkali-Deficient (K,Na)NbO<sub>3</sub> Thin Film on Silicon

Waqar, Moaz; Chai, Jianwei; Wong, Lai Mun; Lim, Poh Chong; Chen, Shuting; Liew, Weng Heng; Wang, Shijie; Chen, Jingsheng; He, Qian; Yao, Kui; Wang, John

doi:10.1021/acs.nanolett.3c03302

Cited by 3 publications

(1 citation statement)

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“…Another added value of the LiNbO 3 phase is that, together with other materials such as (K,Na)NbO 3 [ 26 , 27 ] and BiFeO 3 [ 28 , 29 ] phases, it is a lead-free material [ 30 ]. The significant attention garnered by lead-free (K,Na)NbO 3 arises from its exceptional ferroelectric, dielectric, and piezoelectric features, which are comparable to most lead-based piezoelectric materials [ 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

LiNbO3 Thin Films through a Sol–Gel/Spin-Coating Approach Using a Novel Heterobimetallic Lithium–Niobium Precursor

Lo Presti,

Pellegrino,

Micard

et al. 2024

Nanomaterials

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Lithium niobate is a lead-free material which has attracted considerable attention due to its excellent optical, piezoelectric, and ferroelectric properties. This research is devoted to the synthesis through an innovative sol–gel/spin-coating approach of polycrystalline LiNbO3 films on Si substrates. A novel single-source hetero-bimetallic precursor containing lithium and niobium was synthesized and applied to the sol–gel synthesis. The structural, compositional, and thermal characteristics of the precursor have been tested through attenuated total reflection, X-ray photoelectron spectroscopy, thermogravimetric analysis, and differential scanning calorimetry. The LiNbO3 films have been characterized from a structural point of view with combined X-ray diffraction and Raman spectroscopy. Field-emission scanning electron microscopy, energy dispersive X-ray analysis, and X-ray photoelectron spectroscopy have been used to study the morphological and compositional properties of the deposited films.

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Section: Introductionmentioning

confidence: 99%

LiNbO3 Thin Films through a Sol–Gel/Spin-Coating Approach Using a Novel Heterobimetallic Lithium–Niobium Precursor

Lo Presti,

Pellegrino,

Micard

et al. 2024

Nanomaterials

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Lattice strain engineered reactive oxygen species generation of NaNbO3 ferroelectric

Xu,

Liu,

Xie

et al. 2024

Nano Energy

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Insights into Antisite Defect Complex Induced High Ferro-Piezoelectric Properties in KNbO3 Perovskite: First-Principles Study

Li,

Zhang,

Wang

et al. 2024

Materials

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Improving ferro-piezoelectric properties of niobate-based perovskites is highly desirable for developing eco-friendly high-performance sensors and actuators. Although electro-strain coupling is usually obtained by constructing multiphase boundaries via complex chemical compositions, defect engineering can also create opportunities for novel property and functionality advancements. In this work, a representative tetragonal niobate-based perovskite, i.e., KNbO3, is studied by using first-principles calculations. Two intrinsic types of Nb antisite defect complexes are selected to mimic alkali-deficiency induced excess Nb antisites in experiments. The formation energy, electronic profiles, polarization, and piezoelectric constants are systematically analyzed. It is shown that the structural distortion and chemical heterogeneity around the energetically favorable antisite pair defects, i.e., (NbK4·+KNb4′), lower the crystal symmetry of KNbO3 from tetragonal to triclinic phase, and facilitate polarization emergence and reorientation to substantially enhance intrinsic ferro-piezoelectricity (i.e., spontaneous polarization Ps of 68.2 μC/cm2 and piezoelectric strain constant d33 of 228.3 pC/N) without complicated doping and alloying.

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Large Electromechanical Response in a Polycrystalline Alkali-Deficient (K,Na)NbO₃ Thin Film on Silicon

Cited by 3 publications

References 32 publications

LiNbO3 Thin Films through a Sol–Gel/Spin-Coating Approach Using a Novel Heterobimetallic Lithium–Niobium Precursor

LiNbO3 Thin Films through a Sol–Gel/Spin-Coating Approach Using a Novel Heterobimetallic Lithium–Niobium Precursor

Lattice strain engineered reactive oxygen species generation of NaNbO3 ferroelectric

Insights into Antisite Defect Complex Induced High Ferro-Piezoelectric Properties in KNbO3 Perovskite: First-Principles Study

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Large Electromechanical Response in a Polycrystalline Alkali-Deficient (K,Na)NbO3 Thin Film on Silicon

Cited by 3 publications

References 32 publications

LiNbO3 Thin Films through a Sol–Gel/Spin-Coating Approach Using a Novel Heterobimetallic Lithium–Niobium Precursor

LiNbO3 Thin Films through a Sol–Gel/Spin-Coating Approach Using a Novel Heterobimetallic Lithium–Niobium Precursor

Lattice strain engineered reactive oxygen species generation of NaNbO3 ferroelectric

Insights into Antisite Defect Complex Induced High Ferro-Piezoelectric Properties in KNbO3 Perovskite: First-Principles Study

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Product

Resources

About

Large Electromechanical Response in a Polycrystalline Alkali-Deficient (K,Na)NbO₃ Thin Film on Silicon